diff --git a/src/components/script/dom/attr.rs b/src/components/script/dom/attr.rs
index d6c2d530862..5c37ca45632 100644
--- a/src/components/script/dom/attr.rs
+++ b/src/components/script/dom/attr.rs
@@ -91,31 +91,40 @@ impl Attr {
     }
 }
 
-impl Attr {
-    pub fn LocalName(&self) -> DOMString {
+pub trait AttrMethods {
+    fn LocalName(&self) -> DOMString;
+    fn Value(&self) -> DOMString;
+    fn SetValue(&mut self, value: DOMString);
+    fn Name(&self) -> DOMString;
+    fn GetNamespaceURI(&self) -> Option<DOMString>;
+    fn GetPrefix(&self) -> Option<DOMString>;
+}
+
+impl<'a> AttrMethods for JSRef<'a, Attr> {
+    fn LocalName(&self) -> DOMString {
         self.local_name.clone()
     }
 
-    pub fn Value(&self) -> DOMString {
+    fn Value(&self) -> DOMString {
         self.value.clone()
     }
 
-    pub fn SetValue(&mut self, value: DOMString) {
+    fn SetValue(&mut self, value: DOMString) {
         self.set_value(ReplacedAttr, value);
     }
 
-    pub fn Name(&self) -> DOMString {
+    fn Name(&self) -> DOMString {
         self.name.clone()
     }
 
-    pub fn GetNamespaceURI(&self) -> Option<DOMString> {
+    fn GetNamespaceURI(&self) -> Option<DOMString> {
         match self.namespace.to_str() {
             "" => None,
             url => Some(url.to_owned()),
         }
     }
 
-    pub fn GetPrefix(&self) -> Option<DOMString> {
+    fn GetPrefix(&self) -> Option<DOMString> {
         self.prefix.clone()
     }
 }
diff --git a/src/components/script/dom/attrlist.rs b/src/components/script/dom/attrlist.rs
index 273378347f0..eca2deade79 100644
--- a/src/components/script/dom/attrlist.rs
+++ b/src/components/script/dom/attrlist.rs
@@ -29,18 +29,26 @@ impl AttrList {
         reflect_dom_object(~AttrList::new_inherited(window.unrooted(), elem.unrooted()),
                            window, AttrListBinding::Wrap)
     }
+}
 
-    pub fn Length(&self) -> u32 {
+pub trait AttrListMethods {
+    fn Length(&self) -> u32;
+    fn Item(&self, index: u32) -> Option<Unrooted<Attr>>;
+    fn IndexedGetter(&self, index: u32, found: &mut bool) -> Option<Unrooted<Attr>>;
+}
+
+impl<'a> AttrListMethods for JSRef<'a, AttrList> { 
+    fn Length(&self) -> u32 {
         let roots = RootCollection::new();
         self.owner.root(&roots).attrs.len() as u32
     }
 
-    pub fn Item(&self, index: u32) -> Option<Unrooted<Attr>> {
+    fn Item(&self, index: u32) -> Option<Unrooted<Attr>> {
         let roots = RootCollection::new();
         self.owner.root(&roots).attrs.as_slice().get(index as uint).map(|x| Unrooted::new(x.clone()))
     }
 
-    pub fn IndexedGetter(&self, index: u32, found: &mut bool) -> Option<Unrooted<Attr>> {
+    fn IndexedGetter(&self, index: u32, found: &mut bool) -> Option<Unrooted<Attr>> {
         let item = self.Item(index);
         *found = item.is_some();
         item
diff --git a/src/components/script/dom/bindings/codegen/CodegenRust.py b/src/components/script/dom/bindings/codegen/CodegenRust.py
index 74de0fe75d4..a8b75a75456 100644
--- a/src/components/script/dom/bindings/codegen/CodegenRust.py
+++ b/src/components/script/dom/bindings/codegen/CodegenRust.py
@@ -1395,7 +1395,7 @@ class CGImports(CGWrapper):
     """
     Generates the appropriate import/use statements.
     """
-    def __init__(self, child, imports):
+    def __init__(self, child, descriptors, imports):
         """
         Adds a set of imports.
         """
@@ -1415,6 +1415,10 @@ class CGImports(CGWrapper):
             'dead_code',
         ]
 
+        for d in descriptors:
+            name = d.interface.identifier.name
+            imports.append('dom::%s::%sMethods' % (name.lower(), name))
+
         statements = ['#![allow(%s)]' % ','.join(ignored_warnings)]
         statements.extend('use %s;' % i for i in sorted(imports))
 
@@ -2499,7 +2503,8 @@ class CGSpecializedMethod(CGAbstractExternMethod):
         return CGWrapper(CGMethodCall(argsPre, nativeName, self.method.isStatic(),
                                       self.descriptor, self.method),
                          pre=extraPre +
-                             "  let this = &mut *this;\n").define()
+                             "  let this = JS::from_raw(this);\n" +
+                             "  let mut this = this.root(&roots);\n").define()
 
 class CGGenericGetter(CGAbstractBindingMethod):
     """
@@ -2558,7 +2563,8 @@ class CGSpecializedGetter(CGAbstractExternMethod):
         return CGWrapper(CGIndenter(CGGetterCall(argsPre, self.attr.type, nativeName,
                                                  self.descriptor, self.attr)),
                          pre=extraPre +
-                             "  let this = &mut *this;\n").define()
+                             "  let this = JS::from_raw(this);\n" +
+                             "  let mut this = this.root(&roots);\n").define()
 
 class CGGenericSetter(CGAbstractBindingMethod):
     """
@@ -2617,7 +2623,8 @@ class CGSpecializedSetter(CGAbstractExternMethod):
         return CGWrapper(CGIndenter(CGSetterCall(argsPre, self.attr.type, nativeName,
                                                  self.descriptor, self.attr)),
                          pre=extraPre +
-                             "  let this = &mut *this;\n").define()
+                             "  let this = JS::from_raw(this);\n" +
+                             "  let mut this = this.root(&roots);\n").define()
 
 
 class CGMemberJITInfo(CGThing):
@@ -3508,14 +3515,14 @@ class CGProxyNamedSetter(CGProxySpecialOperation):
 class CGProxyUnwrap(CGAbstractMethod):
     def __init__(self, descriptor):
         args = [Argument('*JSObject', 'obj')]
-        CGAbstractMethod.__init__(self, descriptor, "UnwrapProxy", '*' + descriptor.concreteType, args, alwaysInline=True)
+        CGAbstractMethod.__init__(self, descriptor, "UnwrapProxy", '*mut ' + descriptor.concreteType, args, alwaysInline=True)
 
     def definition_body(self):
         return """  /*if (xpc::WrapperFactory::IsXrayWrapper(obj)) {
     obj = js::UnwrapObject(obj);
   }*/
   //MOZ_ASSERT(IsProxy(obj));
-  let box_: *%s = cast::transmute(GetProxyPrivate(obj).to_private());
+  let box_: *mut %s = cast::transmute(GetProxyPrivate(obj).to_private());
   return box_;""" % (self.descriptor.concreteType)
 
 class CGDOMJSProxyHandler_getOwnPropertyDescriptor(CGAbstractExternMethod):
@@ -3540,9 +3547,11 @@ class CGDOMJSProxyHandler_getOwnPropertyDescriptor(CGAbstractExternMethod):
             templateValues = {'jsvalRef': '(*desc).value', 'successCode': fillDescriptor}
             get = ("if index.is_some() {\n" +
                    "  let index = index.unwrap();\n" +
-                   "  let this: *%s = UnwrapProxy(proxy);\n" +
+                   "  let this = UnwrapProxy(proxy);\n" +
+                   "  let this = JS::from_raw(this);\n" +
+                   "  let mut this = this.root(&roots);\n" +
                    CGIndenter(CGProxyIndexedGetter(self.descriptor, templateValues)).define() + "\n" +
-                   "}\n") % (self.descriptor.concreteType)
+                   "}\n")
 
         if indexedSetter or self.descriptor.operations['NamedSetter']:
             setOrIndexedGet += "if set != 0 {\n"
@@ -3585,9 +3594,11 @@ class CGDOMJSProxyHandler_getOwnPropertyDescriptor(CGAbstractExternMethod):
             namedGet = ("\n" +
                         "if set == 0 && RUST_JSID_IS_STRING(id) != 0 && !HasPropertyOnPrototype(cx, proxy, id) {\n" +
                         "  let name = Some(jsid_to_str(cx, id));\n" +
-                        "  let this: *%s = UnwrapProxy(proxy);\n" +
+                        "  let this = UnwrapProxy(proxy);\n" +
+                        "  let this = JS::from_raw(this);\n" +
+                        "  let mut this = this.root(&roots);\n" +
                         CGIndenter(CGProxyNamedGetter(self.descriptor, templateValues)).define() + "\n" +
-                        "}\n") % (self.descriptor.concreteType)
+                        "}\n")
         else:
             namedGet = ""
 
@@ -3628,10 +3639,12 @@ class CGDOMJSProxyHandler_defineProperty(CGAbstractExternMethod):
             set += ("let index = GetArrayIndexFromId(cx, id);\n" +
                     "if index.is_some() {\n" +
                     "  let index = index.unwrap();\n" +
-                    "  let this: *mut %s = UnwrapProxy(proxy) as *mut %s;\n" +
+                    "  let this = UnwrapProxy(proxy);\n" +
+                    "  let this = JS::from_raw(this);\n" +
+                    "  let mut this = this.root(&roots);\n" +
                     CGIndenter(CGProxyIndexedSetter(self.descriptor)).define() +
                     "  return 1;\n" +
-                    "}\n") % (self.descriptor.concreteType, self.descriptor.concreteType)
+                    "}\n")
         elif self.descriptor.operations['IndexedGetter']:
             set += ("if GetArrayIndexFromId(cx, id).is_some() {\n" +
                     "  return 0;\n" +
@@ -3644,20 +3657,24 @@ class CGDOMJSProxyHandler_defineProperty(CGAbstractExternMethod):
                 raise TypeError("Can't handle creator that's different from the setter")
             set += ("if RUST_JSID_IS_STRING(id) != 0 {\n" +
                     "  let name = Some(jsid_to_str(cx, id));\n" +
-                    "  let this: *%s = UnwrapProxy(proxy);\n" +
+                    "  let this = UnwrapProxy(proxy);\n" +
+                    "  let this = JS::from_raw(this);\n" +
+                    "  let mut this = this.root(&roots);\n" +
                     CGIndenter(CGProxyNamedSetter(self.descriptor)).define() + "\n" +
-                    "}\n") % (self.descriptor.concreteType)
+                    "}\n")
         elif self.descriptor.operations['NamedGetter']:
             set += ("if RUST_JSID_IS_STRING(id) {\n" +
                     "  let name = Some(jsid_to_str(cx, id));\n" +
-                    "  let this: %%s = UnwrapProxy(proxy);\n" +
+                    "  let this = UnwrapProxy(proxy);\n" +
+                    "  let this = JS::from_raw(this);\n" +
+                    "  let mut this = this.root(&roots);\n" +
                     CGIndenter(CGProxyNamedGetter(self.descriptor)).define() +
                     "  if (found) {\n"
                     "    return 0;\n" +
                     "    //return ThrowErrorMessage(cx, MSG_NO_PROPERTY_SETTER, \"%s\");\n" +
                     "  }\n" +
                     "  return 1;\n"
-                    "}\n") % (self.descriptor.concreteType, self.descriptor.name)
+                    "}\n") % (self.descriptor.name)
         return set + """return proxyhandler::defineProperty_(%s);""" % ", ".join(a.name for a in self.args)
 
     def definition_body(self):
@@ -3675,11 +3692,13 @@ class CGDOMJSProxyHandler_hasOwn(CGAbstractExternMethod):
             indexed = ("let index = GetArrayIndexFromId(cx, id);\n" +
                        "if index.is_some() {\n" +
                        "  let index = index.unwrap();\n" +
-                       "  let this: *%s = UnwrapProxy(proxy);\n" +
+                       "  let this = UnwrapProxy(proxy);\n" +
+                       "  let this = JS::from_raw(this);\n" +
+                       "  let mut this = this.root(&roots);\n" +
                        CGIndenter(CGProxyIndexedGetter(self.descriptor)).define() + "\n" +
                        "  *bp = found as JSBool;\n" +
                        "  return 1;\n" +
-                       "}\n\n") % (self.descriptor.concreteType)
+                       "}\n\n")
         else:
             indexed = ""
 
@@ -3687,12 +3706,14 @@ class CGDOMJSProxyHandler_hasOwn(CGAbstractExternMethod):
         if namedGetter:
             named = ("if RUST_JSID_IS_STRING(id) != 0 && !HasPropertyOnPrototype(cx, proxy, id) {\n" +
                      "  let name = Some(jsid_to_str(cx, id));\n" +
-                     "  let this: *%s = UnwrapProxy(proxy);\n" +
+                     "  let this = UnwrapProxy(proxy);\n" +
+                     "  let this = JS::from_raw(this);\n" +
+                     "  let mut this = this.root(&roots);\n" +
                      CGIndenter(CGProxyNamedGetter(self.descriptor)).define() + "\n" +
                      "  *bp = found as JSBool;\n"
                      "  return 1;\n"
                      "}\n" +
-                     "\n") % (self.descriptor.concreteType)
+                     "\n")
         else:
             named = ""
 
@@ -3740,6 +3761,8 @@ if expando.is_not_null() {
                                    "if index.is_some() {\n" +
                                    "  let index = index.unwrap();\n" +
                                    "  let this = UnwrapProxy(proxy);\n" +
+                                   "  let this = JS::from_raw(this);\n" +
+                                   "  let mut this = this.root(&roots);\n" +
                                    CGIndenter(CGProxyIndexedGetter(self.descriptor, templateValues)).define())
             getIndexedOrExpando += """
   // Even if we don't have this index, we don't forward the
@@ -3756,6 +3779,8 @@ if expando.is_not_null() {
             getNamed = ("if (JSID_IS_STRING(id)) {\n" +
                         "  let name = Some(jsid_to_str(cx, id));\n" +
                         "  let this = UnwrapProxy(proxy);\n" +
+                        "  let this = JS::from_raw(this);\n" +
+                        "  let mut this = this.root(&roots);\n" +
                         CGIndenter(CGProxyNamedGetter(self.descriptor, templateValues)).define() +
                         "}\n") % (self.descriptor.concreteType)
         else:
@@ -4288,7 +4313,7 @@ class CGBindingRoot(CGThing):
         # Add imports
         #XXXjdm This should only import the namespace for the current binding,
         #       not every binding ever.
-        curr = CGImports(curr, [
+        curr = CGImports(curr, descriptors, [
             'js',
             'js::{JS_ARGV, JS_CALLEE, JS_THIS_OBJECT}',
             'js::{JSCLASS_GLOBAL_SLOT_COUNT, JSCLASS_IS_DOMJSCLASS}',
@@ -5253,7 +5278,7 @@ class GlobalGenRoots():
     @staticmethod
     def RegisterBindings(config):
         # TODO - Generate the methods we want
-        return CGImports(CGRegisterProtos(config), [
+        return CGImports(CGRegisterProtos(config), [], [
             'dom::bindings::codegen',
             'dom::bindings::js::{JS, JSRef}',
             'dom::window::Window',
@@ -5372,7 +5397,7 @@ class GlobalGenRoots():
 
         curr = UnionTypes(config.getDescriptors())
 
-        curr = CGImports(curr, [
+        curr = CGImports(curr, [], [
             'dom::bindings::utils::unwrap_jsmanaged',
             'dom::bindings::codegen::PrototypeList',
             'dom::bindings::conversions::{FromJSValConvertible, ToJSValConvertible}',
diff --git a/src/components/script/dom/blob.rs b/src/components/script/dom/blob.rs
index 0399568063d..a40715f00f2 100644
--- a/src/components/script/dom/blob.rs
+++ b/src/components/script/dom/blob.rs
@@ -28,28 +28,35 @@ impl Blob {
                            window,
                            BlobBinding::Wrap)
     }
-}
 
-impl Blob {
     pub fn Constructor(window: &JSRef<Window>) -> Fallible<Unrooted<Blob>> {
         Ok(Blob::new(window))
     }
+}
 
-    pub fn Size(&self) -> u64 {
+pub trait BlobMethods {
+    fn Size(&self) -> u64;
+    fn Type(&self) -> DOMString;
+    fn Slice(&self, _start: Option<i64>, _end: Option<i64>, _contentType: Option<DOMString>) -> Unrooted<Blob>;
+    fn Close(&self);
+}
+
+impl<'a> BlobMethods for JSRef<'a, Blob> {
+    fn Size(&self) -> u64 {
         0
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn Slice(&self, _start: Option<i64>, _end: Option<i64>, _contentType: Option<DOMString>) -> Unrooted<Blob> {
+    fn Slice(&self, _start: Option<i64>, _end: Option<i64>, _contentType: Option<DOMString>) -> Unrooted<Blob> {
         let roots = RootCollection::new();
         let window = self.window.root(&roots);
         Blob::new(&window.root_ref())
     }
 
-    pub fn Close(&self) {}
+    fn Close(&self) {}
 }
 
 impl Reflectable for Blob {
diff --git a/src/components/script/dom/characterdata.rs b/src/components/script/dom/characterdata.rs
index f85246ee12c..44962eea8a9 100644
--- a/src/components/script/dom/characterdata.rs
+++ b/src/components/script/dom/characterdata.rs
@@ -5,7 +5,7 @@
 //! DOM bindings for `CharacterData`.
 
 use dom::bindings::codegen::InheritTypes::CharacterDataDerived;
-use dom::bindings::js::JS;
+use dom::bindings::js::{JS, JSRef};
 use dom::bindings::error::{Fallible, ErrorResult, IndexSize};
 use dom::bindings::utils::{Reflectable, Reflector};
 use dom::document::Document;
@@ -37,38 +37,51 @@ impl CharacterData {
             data: data
         }
     }
+}
 
-    pub fn Data(&self) -> DOMString {
+pub trait CharacterDataMethods {
+    fn Data(&self) -> DOMString;
+    fn SetData(&mut self, arg: DOMString) -> ErrorResult;
+    fn Length(&self) -> u32;
+    fn SubstringData(&self, offset: u32, count: u32) -> Fallible<DOMString>;
+    fn AppendData(&mut self, arg: DOMString) -> ErrorResult;
+    fn InsertData(&mut self, _offset: u32, _arg: DOMString) -> ErrorResult;
+    fn DeleteData(&mut self, _offset: u32, _count: u32) -> ErrorResult;
+    fn ReplaceData(&mut self, _offset: u32, _count: u32, _arg: DOMString) -> ErrorResult;
+}
+
+impl<'a> CharacterDataMethods for JSRef<'a, CharacterData> {
+    fn Data(&self) -> DOMString {
         self.data.clone()
     }
 
-    pub fn SetData(&mut self, arg: DOMString) -> ErrorResult {
+    fn SetData(&mut self, arg: DOMString) -> ErrorResult {
         self.data = arg;
         Ok(())
     }
 
-    pub fn Length(&self) -> u32 {
+    fn Length(&self) -> u32 {
         self.data.len() as u32
     }
 
-    pub fn SubstringData(&self, offset: u32, count: u32) -> Fallible<DOMString> {
+    fn SubstringData(&self, offset: u32, count: u32) -> Fallible<DOMString> {
         Ok(self.data.slice(offset as uint, count as uint).to_str())
     }
 
-    pub fn AppendData(&mut self, arg: DOMString) -> ErrorResult {
+    fn AppendData(&mut self, arg: DOMString) -> ErrorResult {
         self.data.push_str(arg);
         Ok(())
     }
 
-    pub fn InsertData(&mut self, offset: u32, arg: DOMString) -> ErrorResult {
+    fn InsertData(&mut self, offset: u32, arg: DOMString) -> ErrorResult {
         self.ReplaceData(offset, 0, arg)
     }
 
-    pub fn DeleteData(&mut self, offset: u32, count: u32) -> ErrorResult {
+    fn DeleteData(&mut self, offset: u32, count: u32) -> ErrorResult {
         self.ReplaceData(offset, count, ~"")
     }
 
-    pub fn ReplaceData(&mut self, offset: u32, count: u32, arg: DOMString) -> ErrorResult {
+    fn ReplaceData(&mut self, offset: u32, count: u32, arg: DOMString) -> ErrorResult {
         let length = self.data.len() as u32;
         if offset > length {
             return Err(IndexSize);
diff --git a/src/components/script/dom/clientrect.rs b/src/components/script/dom/clientrect.rs
index 4e4e2dbdcc6..8f07c6b8175 100644
--- a/src/components/script/dom/clientrect.rs
+++ b/src/components/script/dom/clientrect.rs
@@ -38,29 +38,39 @@ impl ClientRect {
         let rect = ClientRect::new_inherited(window.unrooted(), top, bottom, left, right);
         reflect_dom_object(~rect, window, ClientRectBinding::Wrap)
     }
+}
 
+pub trait ClientRectMethods {
+    fn Top(&self) -> f32;
+    fn Bottom(&self) -> f32;
+    fn Left(&self) -> f32;
+    fn Right(&self) -> f32;
+    fn Width(&self) -> f32;
+    fn Height(&self) -> f32;
+}
 
-    pub fn Top(&self) -> f32 {
+impl<'a> ClientRectMethods for JSRef<'a, ClientRect> {
+    fn Top(&self) -> f32 {
         self.top
     }
 
-    pub fn Bottom(&self) -> f32 {
+    fn Bottom(&self) -> f32 {
         self.bottom
     }
 
-    pub fn Left(&self) -> f32 {
+    fn Left(&self) -> f32 {
         self.left
     }
 
-    pub fn Right(&self) -> f32 {
+    fn Right(&self) -> f32 {
         self.right
     }
 
-    pub fn Width(&self) -> f32 {
+    fn Width(&self) -> f32 {
         (self.right - self.left).abs()
     }
 
-    pub fn Height(&self) -> f32 {
+    fn Height(&self) -> f32 {
         (self.bottom - self.top).abs()
     }
 }
diff --git a/src/components/script/dom/clientrectlist.rs b/src/components/script/dom/clientrectlist.rs
index a9beec896e8..30cbb1043e3 100644
--- a/src/components/script/dom/clientrectlist.rs
+++ b/src/components/script/dom/clientrectlist.rs
@@ -30,12 +30,20 @@ impl ClientRectList {
         reflect_dom_object(~ClientRectList::new_inherited(window.unrooted(), rects),
                            window, ClientRectListBinding::Wrap)
     }
+}
 
-    pub fn Length(&self) -> u32 {
+pub trait ClientRectListMethods {
+    fn Length(&self) -> u32;
+    fn Item(&self, index: u32) -> Option<Unrooted<ClientRect>>;
+    fn IndexedGetter(&self, index: u32, found: &mut bool) -> Option<Unrooted<ClientRect>>;
+}
+
+impl<'a> ClientRectListMethods for JSRef<'a, ClientRectList> {
+    fn Length(&self) -> u32 {
         self.rects.len() as u32
     }
 
-    pub fn Item(&self, index: u32) -> Option<Unrooted<ClientRect>> {
+    fn Item(&self, index: u32) -> Option<Unrooted<ClientRect>> {
         if index < self.rects.len() as u32 {
             Some(Unrooted::new(self.rects.get(index as uint).clone()))
         } else {
@@ -43,7 +51,7 @@ impl ClientRectList {
         }
     }
 
-    pub fn IndexedGetter(&self, index: u32, found: &mut bool) -> Option<Unrooted<ClientRect>> {
+    fn IndexedGetter(&self, index: u32, found: &mut bool) -> Option<Unrooted<ClientRect>> {
         *found = index < self.rects.len() as u32;
         self.Item(index)
     }
diff --git a/src/components/script/dom/comment.rs b/src/components/script/dom/comment.rs
index 779fb6415e9..0814cb7b25c 100644
--- a/src/components/script/dom/comment.rs
+++ b/src/components/script/dom/comment.rs
@@ -10,7 +10,7 @@ use dom::characterdata::CharacterData;
 use dom::document::Document;
 use dom::eventtarget::{EventTarget, NodeTargetTypeId};
 use dom::node::{CommentNodeTypeId, Node};
-use dom::window::Window;
+use dom::window::{Window, WindowMethods};
 use servo_util::str::DOMString;
 
 /// An HTML comment.
@@ -42,9 +42,10 @@ impl Comment {
 
     pub fn Constructor(owner: &JSRef<Window>, data: DOMString) -> Fallible<Unrooted<Comment>> {
         let roots = RootCollection::new();
-        let document = owner.get().Document();
-        let document = document.root(&roots);
-
-        Ok(Comment::new(data, &document.root_ref()))
+        let document = owner.Document().root(&roots);
+        Ok(Comment::new(data, &*document))
     }
 }
+
+pub trait CommentMethods {
+}
diff --git a/src/components/script/dom/console.rs b/src/components/script/dom/console.rs
index ce41ed45212..ce919980f26 100644
--- a/src/components/script/dom/console.rs
+++ b/src/components/script/dom/console.rs
@@ -23,24 +23,34 @@ impl Console {
     pub fn new(window: &JSRef<Window>) -> Unrooted<Console> {
         reflect_dom_object(~Console::new_inherited(), window, ConsoleBinding::Wrap)
     }
+}
 
-    pub fn Log(&self, message: DOMString) {
+pub trait ConsoleMethods {
+    fn Log(&self, message: DOMString);
+    fn Debug(&self, message: DOMString);
+    fn Info(&self, message: DOMString);
+    fn Warn(&self, message: DOMString);
+    fn Error(&self, message: DOMString);
+}
+
+impl<'a> ConsoleMethods for JSRef<'a, Console> {
+    fn Log(&self, message: DOMString) {
         println!("{:s}", message);
     }
 
-    pub fn Debug(&self, message: DOMString) {
+    fn Debug(&self, message: DOMString) {
         println!("{:s}", message);
     }
 
-    pub fn Info(&self, message: DOMString) {
+    fn Info(&self, message: DOMString) {
         println!("{:s}", message);
     }
 
-    pub fn Warn(&self, message: DOMString) {
+    fn Warn(&self, message: DOMString) {
         println!("{:s}", message);
     }
 
-    pub fn Error(&self, message: DOMString) {
+    fn Error(&self, message: DOMString) {
         println!("{:s}", message);
     }
 }
diff --git a/src/components/script/dom/document.rs b/src/components/script/dom/document.rs
index d0ffb203282..f435b6186af 100644
--- a/src/components/script/dom/document.rs
+++ b/src/components/script/dom/document.rs
@@ -33,7 +33,7 @@ use dom::nodelist::NodeList;
 use dom::text::Text;
 use dom::processinginstruction::ProcessingInstruction;
 use dom::uievent::UIEvent;
-use dom::window::Window;
+use dom::window::{Window, WindowMethods};
 use dom::location::Location;
 use html::hubbub_html_parser::build_element_from_tag;
 use hubbub::hubbub::{QuirksMode, NoQuirks, LimitedQuirks, FullQuirks};
@@ -122,22 +122,108 @@ impl Document {
         }
     }
 
+    // http://dom.spec.whatwg.org/#dom-document
+    pub fn Constructor(owner: &JSRef<Window>) -> Fallible<Unrooted<Document>> {
+        Ok(Document::new(owner, None, NonHTMLDocument, None))
+    }
+
     pub fn new(window: &JSRef<Window>, url: Option<Url>, doctype: IsHTMLDocument, content_type: Option<DOMString>) -> Unrooted<Document> {
         let document = Document::new_inherited(window.unrooted(), url, doctype, content_type);
         Document::reflect_document(~document, window, DocumentBinding::Wrap)
     }
-}
 
-impl Document {
     pub fn url<'a>(&'a self) -> &'a Url {
         &*self.url
     }
-}
 
-impl Document {
-    // http://dom.spec.whatwg.org/#dom-document
-    pub fn Constructor(owner: &JSRef<Window>) -> Fallible<Unrooted<Document>> {
-        Ok(Document::new(owner, None, NonHTMLDocument, None))
+    pub fn quirks_mode(&self) -> QuirksMode {
+        *self.quirks_mode
+    }
+
+    pub fn set_quirks_mode(&mut self, mode: QuirksMode) {
+        *self.quirks_mode = mode;
+    }
+
+    pub fn set_encoding_name(&mut self, name: DOMString) {
+        self.encoding_name = name;
+    }
+
+    pub fn content_changed(&self) {
+        self.damage_and_reflow(ContentChangedDocumentDamage);
+    }
+
+    pub fn damage_and_reflow(&self, damage: DocumentDamageLevel) {
+        let roots = RootCollection::new();
+        self.window.root(&roots).damage_and_reflow(damage);
+    }
+
+    pub fn wait_until_safe_to_modify_dom(&self) {
+        let roots = RootCollection::new();
+        self.window.root(&roots).wait_until_safe_to_modify_dom();
+    }
+
+
+    /// Remove any existing association between the provided id and any elements in this document.
+    pub fn unregister_named_element(&mut self,
+                                    abstract_self: &JSRef<Element>,
+                                    id: DOMString) {
+        let roots = RootCollection::new();
+        let mut is_empty = false;
+        match self.idmap.find_mut(&id) {
+            None => {},
+            Some(elements) => {
+                let position = elements.iter()
+                                       .map(|elem| elem.root(&roots))
+                                       .position(|element| &*element == abstract_self)
+                                       .expect("This element should be in registered.");
+                elements.remove(position);
+                is_empty = elements.is_empty();
+            }
+        }
+        if is_empty {
+            self.idmap.remove(&id);
+        }
+    }
+
+    /// Associate an element present in this document with the provided id.
+    pub fn register_named_element(&mut self,
+                                  abstract_self: &JSRef<Document>,
+                                  element: &JSRef<Element>,
+                                  id: DOMString) {
+        let roots = RootCollection::new();
+        assert!({
+            let node: &JSRef<Node> = NodeCast::from_ref(element);
+            node.is_in_doc()
+        });
+
+        // FIXME https://github.com/mozilla/rust/issues/13195
+        //       Use mangle() when it exists again.
+        let root = abstract_self.GetDocumentElement().expect("The element is in the document, so there must be a document element.").root(&roots);
+        match self.idmap.find_mut(&id) {
+            Some(elements) => {
+                let new_node: &JSRef<Node> = NodeCast::from_ref(element);
+                let mut head : uint = 0u;
+                let root: &JSRef<Node> = NodeCast::from_ref(&*root);
+                for node in root.traverse_preorder(&roots) {
+                    let elem: Option<&JSRef<Element>> = ElementCast::to_ref(&node);
+                    match elem {
+                        Some(elem) => {
+                            if elements.get(head) == &elem.unrooted() {
+                                head = head + 1;
+                            }
+                            if new_node == &node || head == elements.len() {
+                                break;
+                            }
+                        }
+                        None => {}
+                    }
+                }
+                elements.insert(head, element.unrooted());
+                return;
+            },
+            None => (),
+        }
+        self.idmap.insert(id, vec!(element.unrooted()));
     }
 }
 
@@ -151,9 +237,87 @@ impl Reflectable for Document {
     }
 }
 
-impl Document {
+trait DocumentHelpers {
+    fn createNodeList(&self, callback: |node: &JSRef<Node>| -> bool) -> Unrooted<NodeList>;
+    fn get_html_element(&self) -> Option<Unrooted<HTMLHtmlElement>>;
+}
+
+impl<'a> DocumentHelpers for JSRef<'a, Document> {
+    fn createNodeList(&self, callback: |node: &JSRef<Node>| -> bool) -> Unrooted<NodeList> {
+        let roots = RootCollection::new();
+        let window = self.window.root(&roots);
+
+        let mut nodes = vec!();
+        match self.GetDocumentElement().root(&roots) {
+            None => {},
+            Some(root) => {
+                let root: &JSRef<Node> = NodeCast::from_ref(&*root);
+                for child in root.traverse_preorder(&roots) {
+                    if callback(&child) {
+                        nodes.push(child);
+                    }
+                }
+            }
+        }
+
+        NodeList::new_simple_list(&*window, nodes)
+    }
+
+    fn get_html_element(&self) -> Option<Unrooted<HTMLHtmlElement>> {
+        let roots = RootCollection::new();
+        self.GetDocumentElement().root(&roots).filtered(|root| {
+            root.node.type_id == ElementNodeTypeId(HTMLHtmlElementTypeId)
+        }).map(|elem| {
+            Unrooted::new_rooted(HTMLHtmlElementCast::to_ref(&*elem).unwrap())
+        })
+    }
+}
+
+pub trait DocumentMethods {
+    fn Implementation(&mut self) -> Unrooted<DOMImplementation>;
+    fn URL(&self) -> DOMString;
+    fn DocumentURI(&self) -> DOMString;
+    fn CompatMode(&self) -> DOMString;
+    fn CharacterSet(&self) -> DOMString;
+    fn ContentType(&self) -> DOMString;
+    fn GetDoctype(&self) -> Option<Unrooted<DocumentType>>;
+    fn GetDocumentElement(&self) -> Option<Unrooted<Element>>;
+    fn GetElementsByTagName(&self, abstract_self: &JSRef<Document>, tag_name: DOMString) -> Unrooted<HTMLCollection>;
+    fn GetElementsByTagNameNS(&self, abstract_self: &JSRef<Document>, maybe_ns: Option<DOMString>, tag_name: DOMString) -> Unrooted<HTMLCollection>;
+    fn GetElementsByClassName(&self, abstract_self: &JSRef<Document>, classes: DOMString) -> Unrooted<HTMLCollection>;
+    fn GetElementById(&self, id: DOMString) -> Option<Unrooted<Element>>;
+    fn CreateElement(&self, abstract_self: &JSRef<Document>, local_name: DOMString) -> Fallible<Unrooted<Element>>;
+    fn CreateElementNS(&self, abstract_self: &JSRef<Document>,
+                       namespace: Option<DOMString>,
+                       qualified_name: DOMString) -> Fallible<Unrooted<Element>>;
+    fn CreateDocumentFragment(&self, abstract_self: &JSRef<Document>) -> Unrooted<DocumentFragment>;
+    fn CreateTextNode(&self, abstract_self: &JSRef<Document>, data: DOMString) -> Unrooted<Text>;
+    fn CreateComment(&self, abstract_self: &JSRef<Document>, data: DOMString) -> Unrooted<Comment>;
+    fn CreateProcessingInstruction(&self, abstract_self: &JSRef<Document>, target: DOMString, data: DOMString) -> Fallible<Unrooted<ProcessingInstruction>>;
+    fn ImportNode(&self, abstract_self: &JSRef<Document>, node: &JSRef<Node>, deep: bool) -> Fallible<Unrooted<Node>>;
+    fn AdoptNode(&self, abstract_self: &JSRef<Document>, node: &mut JSRef<Node>) -> Fallible<Unrooted<Node>>;
+    fn CreateEvent(&self, interface: DOMString) -> Fallible<Unrooted<Event>>;
+    fn Title(&self, _: &JSRef<Document>) -> DOMString;
+    fn SetTitle(&self, abstract_self: &JSRef<Document>, title: DOMString) -> ErrorResult;
+    fn GetHead(&self) -> Option<Unrooted<HTMLHeadElement>>;
+    fn GetBody(&self, _: &JSRef<Document>) -> Option<Unrooted<HTMLElement>>;
+    fn SetBody(&self, abstract_self: &JSRef<Document>, new_body: Option<JSRef<HTMLElement>>) -> ErrorResult;
+    fn GetElementsByName(&self, name: DOMString) -> Unrooted<NodeList>;
+    fn Images(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection>;
+    fn Embeds(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection>;
+    fn Plugins(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection>;
+    fn Links(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection>;
+    fn Forms(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection>;
+    fn Scripts(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection>;
+    fn Anchors(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection>;
+    fn Applets(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection>;
+    fn Location(&mut self, _abstract_self: &JSRef<Document>) -> Unrooted<Location>;
+    fn Children(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection>;
+}
+
+impl<'a> DocumentMethods for JSRef<'a, Document> {
     // http://dom.spec.whatwg.org/#dom-document-implementation
-    pub fn Implementation(&mut self) -> Unrooted<DOMImplementation> {
+    fn Implementation(&mut self) -> Unrooted<DOMImplementation> {
         if self.implementation.is_none() {
             let roots = RootCollection::new();
             let window = self.window.root(&roots);
@@ -163,47 +327,35 @@ impl Document {
     }
 
     // http://dom.spec.whatwg.org/#dom-document-url
-    pub fn URL(&self) -> DOMString {
+    fn URL(&self) -> DOMString {
         self.url().to_str()
     }
 
     // http://dom.spec.whatwg.org/#dom-document-documenturi
-    pub fn DocumentURI(&self) -> DOMString {
+    fn DocumentURI(&self) -> DOMString {
         self.URL()
     }
 
     // http://dom.spec.whatwg.org/#dom-document-compatmode
-    pub fn CompatMode(&self) -> DOMString {
+    fn CompatMode(&self) -> DOMString {
         match *self.quirks_mode {
             NoQuirks => ~"CSS1Compat",
             LimitedQuirks | FullQuirks => ~"BackCompat"
         }
     }
 
-    pub fn quirks_mode(&self) -> QuirksMode {
-        *self.quirks_mode
-    }
-
-    pub fn set_quirks_mode(&mut self, mode: QuirksMode) {
-        *self.quirks_mode = mode;
-    }
-
     // http://dom.spec.whatwg.org/#dom-document-characterset
-    pub fn CharacterSet(&self) -> DOMString {
+    fn CharacterSet(&self) -> DOMString {
         self.encoding_name.to_ascii_lower()
     }
 
-    pub fn set_encoding_name(&mut self, name: DOMString) {
-        self.encoding_name = name;
-    }
-
     // http://dom.spec.whatwg.org/#dom-document-content_type
-    pub fn ContentType(&self) -> DOMString {
+    fn ContentType(&self) -> DOMString {
         self.content_type.clone()
     }
 
     // http://dom.spec.whatwg.org/#dom-document-doctype
-    pub fn GetDoctype(&self) -> Option<Unrooted<DocumentType>> {
+    fn GetDoctype(&self) -> Option<Unrooted<DocumentType>> {
         self.node.children().find(|child| {
             child.is_doctype()
         }).map(|node| {
@@ -213,19 +365,19 @@ impl Document {
     }
 
     // http://dom.spec.whatwg.org/#dom-document-documentelement
-    pub fn GetDocumentElement(&self) -> Option<Unrooted<Element>> {
+    fn GetDocumentElement(&self) -> Option<Unrooted<Element>> {
         self.node.child_elements().next().map(|elem| Unrooted::new_rooted(&elem))
     }
 
     // http://dom.spec.whatwg.org/#dom-document-getelementsbytagname
-    pub fn GetElementsByTagName(&self, abstract_self: &JSRef<Document>, tag_name: DOMString) -> Unrooted<HTMLCollection> {
+    fn GetElementsByTagName(&self, abstract_self: &JSRef<Document>, tag_name: DOMString) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         let window = self.window.root(&roots);
         HTMLCollection::by_tag_name(&*window, NodeCast::from_ref(abstract_self), tag_name)
     }
 
     // http://dom.spec.whatwg.org/#dom-document-getelementsbytagnamens
-    pub fn GetElementsByTagNameNS(&self, abstract_self: &JSRef<Document>, maybe_ns: Option<DOMString>, tag_name: DOMString) -> Unrooted<HTMLCollection> {
+    fn GetElementsByTagNameNS(&self, abstract_self: &JSRef<Document>, maybe_ns: Option<DOMString>, tag_name: DOMString) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         let window = self.window.root(&roots);
 
@@ -237,7 +389,7 @@ impl Document {
     }
 
     // http://dom.spec.whatwg.org/#dom-document-getelementsbyclassname
-    pub fn GetElementsByClassName(&self, abstract_self: &JSRef<Document>, classes: DOMString) -> Unrooted<HTMLCollection> {
+    fn GetElementsByClassName(&self, abstract_self: &JSRef<Document>, classes: DOMString) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         let window = self.window.root(&roots);
 
@@ -245,7 +397,7 @@ impl Document {
     }
 
     // http://dom.spec.whatwg.org/#dom-nonelementparentnode-getelementbyid
-    pub fn GetElementById(&self, id: DOMString) -> Option<Unrooted<Element>> {
+    fn GetElementById(&self, id: DOMString) -> Option<Unrooted<Element>> {
         match self.idmap.find_equiv(&id) {
             None => None,
             Some(ref elements) => Some(Unrooted::new(elements.get(0).clone())),
@@ -253,7 +405,7 @@ impl Document {
     }
 
     // http://dom.spec.whatwg.org/#dom-document-createelement
-    pub fn CreateElement(&self, abstract_self: &JSRef<Document>, local_name: DOMString)
+    fn CreateElement(&self, abstract_self: &JSRef<Document>, local_name: DOMString)
                          -> Fallible<Unrooted<Element>> {
         if xml_name_type(local_name) == InvalidXMLName {
             debug!("Not a valid element name");
@@ -264,9 +416,9 @@ impl Document {
     }
 
     // http://dom.spec.whatwg.org/#dom-document-createelementns
-    pub fn CreateElementNS(&self, abstract_self: &JSRef<Document>,
-                           namespace: Option<DOMString>,
-                           qualified_name: DOMString) -> Fallible<Unrooted<Element>> {
+    fn CreateElementNS(&self, abstract_self: &JSRef<Document>,
+                       namespace: Option<DOMString>,
+                       qualified_name: DOMString) -> Fallible<Unrooted<Element>> {
         let ns = Namespace::from_str(null_str_as_empty_ref(&namespace));
         match xml_name_type(qualified_name) {
             InvalidXMLName => {
@@ -310,23 +462,23 @@ impl Document {
     }
 
     // http://dom.spec.whatwg.org/#dom-document-createdocumentfragment
-    pub fn CreateDocumentFragment(&self, abstract_self: &JSRef<Document>) -> Unrooted<DocumentFragment> {
+    fn CreateDocumentFragment(&self, abstract_self: &JSRef<Document>) -> Unrooted<DocumentFragment> {
         DocumentFragment::new(abstract_self)
     }
 
     // http://dom.spec.whatwg.org/#dom-document-createtextnode
-    pub fn CreateTextNode(&self, abstract_self: &JSRef<Document>, data: DOMString)
+    fn CreateTextNode(&self, abstract_self: &JSRef<Document>, data: DOMString)
                           -> Unrooted<Text> {
         Text::new(data, abstract_self)
     }
 
     // http://dom.spec.whatwg.org/#dom-document-createcomment
-    pub fn CreateComment(&self, abstract_self: &JSRef<Document>, data: DOMString) -> Unrooted<Comment> {
+    fn CreateComment(&self, abstract_self: &JSRef<Document>, data: DOMString) -> Unrooted<Comment> {
         Comment::new(data, abstract_self)
     }
 
     // http://dom.spec.whatwg.org/#dom-document-createprocessinginstruction
-    pub fn CreateProcessingInstruction(&self, abstract_self: &JSRef<Document>, target: DOMString,
+    fn CreateProcessingInstruction(&self, abstract_self: &JSRef<Document>, target: DOMString,
                                        data: DOMString) -> Fallible<Unrooted<ProcessingInstruction>> {
         // Step 1.
         if xml_name_type(target) == InvalidXMLName {
@@ -343,7 +495,7 @@ impl Document {
     }
 
     // http://dom.spec.whatwg.org/#dom-document-importnode
-    pub fn ImportNode(&self, abstract_self: &JSRef<Document>, node: &JSRef<Node>, deep: bool) -> Fallible<Unrooted<Node>> {
+    fn ImportNode(&self, abstract_self: &JSRef<Document>, node: &JSRef<Node>, deep: bool) -> Fallible<Unrooted<Node>> {
         // Step 1.
         if node.is_document() {
             return Err(NotSupported);
@@ -359,7 +511,7 @@ impl Document {
     }
 
     // http://dom.spec.whatwg.org/#dom-document-adoptnode
-    pub fn AdoptNode(&self, abstract_self: &JSRef<Document>, node: &mut JSRef<Node>) -> Fallible<Unrooted<Node>> {
+    fn AdoptNode(&self, abstract_self: &JSRef<Document>, node: &mut JSRef<Node>) -> Fallible<Unrooted<Node>> {
         // Step 1.
         if node.is_document() {
             return Err(NotSupported);
@@ -373,7 +525,7 @@ impl Document {
     }
 
     // http://dom.spec.whatwg.org/#dom-document-createevent
-    pub fn CreateEvent(&self, interface: DOMString) -> Fallible<Unrooted<Event>> {
+    fn CreateEvent(&self, interface: DOMString) -> Fallible<Unrooted<Event>> {
         let roots = RootCollection::new();
         let window = self.window.root(&roots);
 
@@ -387,7 +539,7 @@ impl Document {
     }
 
     // http://www.whatwg.org/specs/web-apps/current-work/#document.title
-    pub fn Title(&self, _: &JSRef<Document>) -> DOMString {
+    fn Title(&self, _: &JSRef<Document>) -> DOMString {
         let mut title = ~"";
         let roots = RootCollection::new();
         self.GetDocumentElement().root(&roots).map(|root| {
@@ -409,7 +561,7 @@ impl Document {
     }
 
     // http://www.whatwg.org/specs/web-apps/current-work/#document.title
-    pub fn SetTitle(&self, abstract_self: &JSRef<Document>, title: DOMString) -> ErrorResult {
+    fn SetTitle(&self, abstract_self: &JSRef<Document>, title: DOMString) -> ErrorResult {
         let roots = RootCollection::new();
 
         self.GetDocumentElement().root(&roots).map(|root| {
@@ -446,17 +598,8 @@ impl Document {
         Ok(())
     }
 
-    fn get_html_element(&self) -> Option<Unrooted<HTMLHtmlElement>> {
-        let roots = RootCollection::new();
-        self.GetDocumentElement().root(&roots).filtered(|root| {
-            root.node.type_id == ElementNodeTypeId(HTMLHtmlElementTypeId)
-        }).map(|elem| {
-            Unrooted::new_rooted(HTMLHtmlElementCast::to_ref(&*elem).unwrap())
-        })
-    }
-
     // http://www.whatwg.org/specs/web-apps/current-work/#dom-document-head
-    pub fn GetHead(&self) -> Option<Unrooted<HTMLHeadElement>> {
+    fn GetHead(&self) -> Option<Unrooted<HTMLHeadElement>> {
         let roots = RootCollection::new();
         self.get_html_element().and_then(|root| {
             let root = root.root(&roots);
@@ -470,7 +613,7 @@ impl Document {
     }
 
     // http://www.whatwg.org/specs/web-apps/current-work/#dom-document-body
-    pub fn GetBody(&self, _: &JSRef<Document>) -> Option<Unrooted<HTMLElement>> {
+    fn GetBody(&self, _: &JSRef<Document>) -> Option<Unrooted<HTMLElement>> {
         let roots = RootCollection::new();
         self.get_html_element().and_then(|root| {
             let root = root.root(&roots);
@@ -488,7 +631,7 @@ impl Document {
     }
 
     // http://www.whatwg.org/specs/web-apps/current-work/#dom-document-body
-    pub fn SetBody(&self, abstract_self: &JSRef<Document>, new_body: Option<JSRef<HTMLElement>>) -> ErrorResult {
+    fn SetBody(&self, abstract_self: &JSRef<Document>, new_body: Option<JSRef<HTMLElement>>) -> ErrorResult {
         let roots = RootCollection::new();
 
         // Step 1.
@@ -532,7 +675,7 @@ impl Document {
     }
 
     // http://www.whatwg.org/specs/web-apps/current-work/#dom-document-getelementsbyname
-    pub fn GetElementsByName(&self, name: DOMString) -> Unrooted<NodeList> {
+    fn GetElementsByName(&self, name: DOMString) -> Unrooted<NodeList> {
         let roots = RootCollection::new();
 
         self.createNodeList(|node| {
@@ -547,7 +690,7 @@ impl Document {
         })
     }
 
-    pub fn Images(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
+    fn Images(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         let window = self.window.root(&roots);
 
@@ -562,7 +705,7 @@ impl Document {
         HTMLCollection::create(&*window, NodeCast::from_ref(abstract_self), filter)
     }
 
-    pub fn Embeds(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
+    fn Embeds(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         let window = self.window.root(&roots);
 
@@ -577,12 +720,12 @@ impl Document {
         HTMLCollection::create(&*window, NodeCast::from_ref(abstract_self), filter)
     }
 
-    pub fn Plugins(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
+    fn Plugins(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
         // FIXME: https://github.com/mozilla/servo/issues/1847
         self.Embeds(abstract_self)
     }
 
-    pub fn Links(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
+    fn Links(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         let window = self.window.root(&roots);
 
@@ -598,7 +741,7 @@ impl Document {
         HTMLCollection::create(&*window, NodeCast::from_ref(abstract_self), filter)
     }
 
-    pub fn Forms(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
+    fn Forms(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         let window = self.window.root(&roots);
 
@@ -613,7 +756,7 @@ impl Document {
         HTMLCollection::create(&*window, NodeCast::from_ref(abstract_self), filter)
     }
 
-    pub fn Scripts(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
+    fn Scripts(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         let window = self.window.root(&roots);
 
@@ -628,7 +771,7 @@ impl Document {
         HTMLCollection::create(&*window, NodeCast::from_ref(abstract_self), filter)
     }
 
-    pub fn Anchors(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
+    fn Anchors(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         let window = self.window.root(&roots);
 
@@ -643,7 +786,7 @@ impl Document {
         HTMLCollection::create(&*window, NodeCast::from_ref(abstract_self), filter)
     }
 
-    pub fn Applets(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
+    fn Applets(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         let window = self.window.root(&roots);
 
@@ -658,113 +801,16 @@ impl Document {
         HTMLCollection::create(&*window, NodeCast::from_ref(abstract_self), filter)
     }
 
-    pub fn Location(&mut self, _abstract_self: &JSRef<Document>) -> Unrooted<Location> {
+    fn Location(&mut self, _abstract_self: &JSRef<Document>) -> Unrooted<Location> {
         let roots = RootCollection::new();
         let mut window = self.window.root(&roots);
         let window_alias = self.window.root(&roots);
-        window.get_mut().Location(&*window_alias)
+        window.Location(&*window_alias)
     }
 
-    pub fn Children(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
+    fn Children(&self, abstract_self: &JSRef<Document>) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         let window = self.window.root(&roots);
         HTMLCollection::children(&*window, NodeCast::from_ref(abstract_self))
     }
-
-    pub fn createNodeList(&self, callback: |node: &JSRef<Node>| -> bool) -> Unrooted<NodeList> {
-        let roots = RootCollection::new();
-        let window = self.window.root(&roots);
-
-        let mut nodes = vec!();
-        match self.GetDocumentElement().root(&roots) {
-            None => {},
-            Some(root) => {
-                let root: &JSRef<Node> = NodeCast::from_ref(&*root);
-                for child in root.traverse_preorder(&roots) {
-                    if callback(&child) {
-                        nodes.push(child);
-                    }
-                }
-            }
-        }
-
-        NodeList::new_simple_list(&*window, nodes)
-    }
-
-    pub fn content_changed(&self) {
-        self.damage_and_reflow(ContentChangedDocumentDamage);
-    }
-
-    pub fn damage_and_reflow(&self, damage: DocumentDamageLevel) {
-        let roots = RootCollection::new();
-        self.window.root(&roots).damage_and_reflow(damage);
-    }
-
-    pub fn wait_until_safe_to_modify_dom(&self) {
-        let roots = RootCollection::new();
-        self.window.root(&roots).wait_until_safe_to_modify_dom();
-    }
-
-
-    /// Remove any existing association between the provided id and any elements in this document.
-    pub fn unregister_named_element(&mut self,
-                                    abstract_self: &JSRef<Element>,
-                                    id: DOMString) {
-        let roots = RootCollection::new();
-        let mut is_empty = false;
-        match self.idmap.find_mut(&id) {
-            None => {},
-            Some(elements) => {
-                let position = elements.iter()
-                                       .map(|elem| elem.root(&roots))
-                                       .position(|element| &*element == abstract_self)
-                                       .expect("This element should be in registered.");
-                elements.remove(position);
-                is_empty = elements.is_empty();
-            }
-        }
-        if is_empty {
-            self.idmap.remove(&id);
-        }
-    }
-
-    /// Associate an element present in this document with the provided id.
-    pub fn register_named_element(&mut self,
-                                  element: &JSRef<Element>,
-                                  id: DOMString) {
-        let roots = RootCollection::new();
-        assert!({
-            let node: &JSRef<Node> = NodeCast::from_ref(element);
-            node.is_in_doc()
-        });
-
-        // FIXME https://github.com/mozilla/rust/issues/13195
-        //       Use mangle() when it exists again.
-        let root = self.GetDocumentElement().expect("The element is in the document, so there must be a document element.").root(&roots);
-        match self.idmap.find_mut(&id) {
-            Some(elements) => {
-                let new_node: &JSRef<Node> = NodeCast::from_ref(element);
-                let mut head : uint = 0u;
-                let root: &JSRef<Node> = NodeCast::from_ref(&*root);
-                for node in root.traverse_preorder(&roots) {
-                    let elem: Option<&JSRef<Element>> = ElementCast::to_ref(&node);
-                    match elem {
-                        Some(elem) => {
-                            if elements.get(head) == &elem.unrooted() {
-                                head = head + 1;
-                            }
-                            if new_node == &node || head == elements.len() {
-                                break;
-                            }
-                        }
-                        None => {}
-                    }
-                }
-                elements.insert(head, element.unrooted());
-                return;
-            },
-            None => (),
-        }
-        self.idmap.insert(id, vec!(element.unrooted()));
-    }
 }
diff --git a/src/components/script/dom/documentfragment.rs b/src/components/script/dom/documentfragment.rs
index 629b68ffdec..aee61d03b51 100644
--- a/src/components/script/dom/documentfragment.rs
+++ b/src/components/script/dom/documentfragment.rs
@@ -10,7 +10,7 @@ use dom::document::Document;
 use dom::eventtarget::{EventTarget, NodeTargetTypeId};
 use dom::htmlcollection::HTMLCollection;
 use dom::node::{DocumentFragmentNodeTypeId, Node, window_from_node};
-use dom::window::Window;
+use dom::window::{Window, WindowMethods};
 
 #[deriving(Encodable)]
 pub struct DocumentFragment {
@@ -38,20 +38,22 @@ impl DocumentFragment {
         let node = DocumentFragment::new_inherited(document.unrooted());
         Node::reflect_node(~node, document, DocumentFragmentBinding::Wrap)
     }
-}
 
-impl DocumentFragment {
     pub fn Constructor(owner: &JSRef<Window>) -> Fallible<Unrooted<DocumentFragment>> {
         let roots = RootCollection::new();
-        let document = owner.get().Document();
+        let document = owner.Document();
         let document = document.root(&roots);
 
         Ok(DocumentFragment::new(&document.root_ref()))
     }
 }
 
-impl DocumentFragment {
-    pub fn Children(&self, abstract_self: &JSRef<DocumentFragment>) -> Unrooted<HTMLCollection> {
+pub trait DocumentFragmentMethods {
+    fn Children(&self, abstract_self: &JSRef<DocumentFragment>) -> Unrooted<HTMLCollection>;
+}
+
+impl<'a> DocumentFragmentMethods for JSRef<'a, DocumentFragment> {
+    fn Children(&self, abstract_self: &JSRef<DocumentFragment>) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         let window = window_from_node(abstract_self).root(&roots);
         HTMLCollection::children(&window.root_ref(), NodeCast::from_ref(abstract_self))
diff --git a/src/components/script/dom/documenttype.rs b/src/components/script/dom/documenttype.rs
index 21b1a784456..26772db65ec 100644
--- a/src/components/script/dom/documenttype.rs
+++ b/src/components/script/dom/documenttype.rs
@@ -55,16 +55,23 @@ impl DocumentType {
     }
 }
 
-impl DocumentType {
-    pub fn Name(&self) -> DOMString {
+pub trait DocumentTypeMethods {
+    fn Name(&self) -> DOMString;
+    fn PublicId(&self) -> DOMString;
+    fn SystemId(&self) -> DOMString;
+}
+
+impl<'a> DocumentTypeMethods for JSRef<'a, DocumentType> {
+    fn Name(&self) -> DOMString {
         self.name.clone()
     }
 
-    pub fn PublicId(&self) -> DOMString {
+    fn PublicId(&self) -> DOMString {
         self.public_id.clone()
     }
 
-    pub fn SystemId(&self) -> DOMString {
+    fn SystemId(&self) -> DOMString {
         self.system_id.clone()
     }
 }
+
diff --git a/src/components/script/dom/domexception.rs b/src/components/script/dom/domexception.rs
index 08a8c364deb..78d43b047f1 100644
--- a/src/components/script/dom/domexception.rs
+++ b/src/components/script/dom/domexception.rs
@@ -64,9 +64,15 @@ impl Reflectable for DOMException {
     }
 }
 
-impl DOMException {
+pub trait DOMExceptionMethods {
+    fn Code(&self) -> u16;
+    fn Name(&self) -> DOMString;
+    fn Message(&self) -> DOMString;
+}
+
+impl<'a> DOMExceptionMethods for JSRef<'a, DOMException> {
     // http://dom.spec.whatwg.org/#dom-domexception-code
-    pub fn Code(&self) -> u16 {
+    fn Code(&self) -> u16 {
         match self.code {
             // http://dom.spec.whatwg.org/#concept-throw
             EncodingError => 0,
@@ -75,12 +81,12 @@ impl DOMException {
     }
 
     // http://dom.spec.whatwg.org/#error-names-0
-    pub fn Name(&self) -> DOMString {
+    fn Name(&self) -> DOMString {
         self.code.to_str()
     }
 
     // http://dom.spec.whatwg.org/#error-names-0
-    pub fn Message(&self) -> DOMString {
+    fn Message(&self) -> DOMString {
         match self.code {
             IndexSizeError => ~"The index is not in the allowed range.",
             HierarchyRequestError => ~"The operation would yield an incorrect node tree.",
diff --git a/src/components/script/dom/domimplementation.rs b/src/components/script/dom/domimplementation.rs
index 0e824306343..a8f889ddd8c 100644
--- a/src/components/script/dom/domimplementation.rs
+++ b/src/components/script/dom/domimplementation.rs
@@ -8,7 +8,7 @@ use dom::bindings::js::{JS, JSRef, RootCollection, Unrooted, OptionalRootable};
 use dom::bindings::utils::{Reflector, Reflectable, reflect_dom_object};
 use dom::bindings::error::{Fallible, InvalidCharacter, NamespaceError};
 use dom::bindings::utils::{QName, Name, InvalidXMLName, xml_name_type};
-use dom::document::{Document, HTMLDocument, NonHTMLDocument};
+use dom::document::{Document, HTMLDocument, NonHTMLDocument, DocumentMethods};
 use dom::documenttype::DocumentType;
 use dom::htmlbodyelement::HTMLBodyElement;
 use dom::htmlheadelement::HTMLHeadElement;
@@ -16,7 +16,7 @@ use dom::htmlhtmlelement::HTMLHtmlElement;
 use dom::htmltitleelement::HTMLTitleElement;
 use dom::node::{Node, AppendChild};
 use dom::text::Text;
-use dom::window::Window;
+use dom::window::{Window, WindowMethods};
 use servo_util::str::DOMString;
 
 #[deriving(Encodable)]
@@ -49,10 +49,17 @@ impl Reflectable for DOMImplementation {
     }
 }
 
+pub trait DOMImplementationMethods {
+    fn CreateDocumentType(&self, qname: DOMString, pubid: DOMString, sysid: DOMString) -> Fallible<Unrooted<DocumentType>>;
+    fn CreateDocument(&self, namespace: Option<DOMString>, qname: DOMString,
+                      mut maybe_doctype: Option<JSRef<DocumentType>>) -> Fallible<Unrooted<Document>>;
+    fn CreateHTMLDocument(&self, title: Option<DOMString>) -> Unrooted<Document>;
+}
+
 // http://dom.spec.whatwg.org/#domimplementation
-impl DOMImplementation {
+impl<'a> DOMImplementationMethods for JSRef<'a, DOMImplementation> {
     // http://dom.spec.whatwg.org/#dom-domimplementation-createdocumenttype
-    pub fn CreateDocumentType(&self, qname: DOMString, pubid: DOMString, sysid: DOMString) -> Fallible<Unrooted<DocumentType>> {
+    fn CreateDocumentType(&self, qname: DOMString, pubid: DOMString, sysid: DOMString) -> Fallible<Unrooted<DocumentType>> {
         let roots = RootCollection::new();
         match xml_name_type(qname) {
             // Step 1.
@@ -69,8 +76,8 @@ impl DOMImplementation {
     }
 
     // http://dom.spec.whatwg.org/#dom-domimplementation-createdocument
-    pub fn CreateDocument(&self, namespace: Option<DOMString>, qname: DOMString,
-                          mut maybe_doctype: Option<JSRef<DocumentType>>) -> Fallible<Unrooted<Document>> {
+    fn CreateDocument(&self, namespace: Option<DOMString>, qname: DOMString,
+                      mut maybe_doctype: Option<JSRef<DocumentType>>) -> Fallible<Unrooted<Document>> {
         let roots = RootCollection::new();
         let win = self.owner.root(&roots);
 
@@ -80,7 +87,7 @@ impl DOMImplementation {
         let mut maybe_elem = if qname.is_empty() {
             None
         } else {
-            match doc.get().CreateElementNS(&*doc, namespace, qname) {
+            match doc.deref().CreateElementNS(&*doc, namespace, qname) {
                 Err(error) => return Err(error),
                 Ok(elem) => Some(elem)
             }
@@ -114,7 +121,7 @@ impl DOMImplementation {
     }
 
     // http://dom.spec.whatwg.org/#dom-domimplementation-createhtmldocument
-    pub fn CreateHTMLDocument(&self, title: Option<DOMString>) -> Unrooted<Document> {
+    fn CreateHTMLDocument(&self, title: Option<DOMString>) -> Unrooted<Document> {
         let roots = RootCollection::new();
         let owner = self.owner.root(&roots);
 
diff --git a/src/components/script/dom/domparser.rs b/src/components/script/dom/domparser.rs
index 6d77273e11e..9f8785e6fd7 100644
--- a/src/components/script/dom/domparser.rs
+++ b/src/components/script/dom/domparser.rs
@@ -33,11 +33,17 @@ impl DOMParser {
     pub fn Constructor(owner: &JSRef<Window>) -> Fallible<Unrooted<DOMParser>> {
         Ok(DOMParser::new(owner))
     }
+}
 
-    pub fn ParseFromString(&self,
-                           _s: DOMString,
-                           ty: DOMParserBinding::SupportedType)
-                           -> Fallible<Unrooted<Document>> {
+pub trait DOMParserMethods {
+    fn ParseFromString(&self, _s: DOMString, ty: DOMParserBinding::SupportedType) -> Fallible<Unrooted<Document>>;
+}
+
+impl<'a> DOMParserMethods for JSRef<'a, DOMParser> {
+    fn ParseFromString(&self,
+                       _s: DOMString,
+                       ty: DOMParserBinding::SupportedType)
+                       -> Fallible<Unrooted<Document>> {
         let roots = RootCollection::new();
         let owner = self.owner.root(&roots);
         match ty {
diff --git a/src/components/script/dom/element.rs b/src/components/script/dom/element.rs
index a3bdeb22d3e..2a66aec0221 100644
--- a/src/components/script/dom/element.rs
+++ b/src/components/script/dom/element.rs
@@ -4,7 +4,7 @@
 
 //! Element nodes.
 
-use dom::attr::{Attr, ReplacedAttr, FirstSetAttr};
+use dom::attr::{Attr, ReplacedAttr, FirstSetAttr, AttrMethods};
 use dom::attrlist::AttrList;
 use dom::bindings::codegen::BindingDeclarations::ElementBinding;
 use dom::bindings::codegen::InheritTypes::{ElementDerived, NodeCast};
@@ -458,23 +458,51 @@ impl Element {
     }
 }
 
-impl Element {
+pub trait ElementMethods {
+    fn NamespaceURI(&self) -> DOMString;
+    fn LocalName(&self) -> DOMString;
+    fn GetPrefix(&self) -> Option<DOMString>;
+    fn TagName(&self) -> DOMString;
+    fn Id(&self, abstract_self: &JSRef<Element>) -> DOMString;
+    fn SetId(&mut self, abstract_self: &mut JSRef<Element>, id: DOMString);
+    fn ClassName(&self, abstract_self: &JSRef<Element>) -> DOMString;
+    fn SetClassName(&self, abstract_self: &mut JSRef<Element>, class: DOMString);
+    fn Attributes(&mut self, abstract_self: &JSRef<Element>) -> Unrooted<AttrList>;
+    fn GetAttribute(&self, abstract_self: &JSRef<Element>, name: DOMString) -> Option<DOMString>;
+    fn GetAttributeNS(&self, abstract_self: &JSRef<Element>, namespace: Option<DOMString>, local_name: DOMString) -> Option<DOMString>;
+    fn SetAttribute(&self, abstract_self: &mut JSRef<Element>, name: DOMString, value: DOMString) -> ErrorResult;
+    fn SetAttributeNS(&self, abstract_self: &mut JSRef<Element>, namespace_url: Option<DOMString>, name: DOMString, value: DOMString) -> ErrorResult;
+    fn RemoveAttribute(&mut self, abstract_self: &mut JSRef<Element>, name: DOMString) -> ErrorResult;
+    fn RemoveAttributeNS(&mut self, abstract_self: &mut JSRef<Element>, namespace: Option<DOMString>, localname: DOMString) -> ErrorResult;
+    fn HasAttribute(&self, abstract_self: &JSRef<Element>, name: DOMString) -> bool;
+    fn HasAttributeNS(&self, abstract_self: &JSRef<Element>, namespace: Option<DOMString>, local_name: DOMString) -> bool;
+    fn GetElementsByTagName(&self, abstract_self: &JSRef<Element>, localname: DOMString) -> Unrooted<HTMLCollection>;
+    fn GetElementsByTagNameNS(&self, abstract_self: &JSRef<Element>, maybe_ns: Option<DOMString>, localname: DOMString) -> Unrooted<HTMLCollection>;
+    fn GetElementsByClassName(&self, abstract_self: &JSRef<Element>, classes: DOMString) -> Unrooted<HTMLCollection>;
+    fn GetClientRects(&self, abstract_self: &JSRef<Element>) -> Unrooted<ClientRectList>;
+    fn GetBoundingClientRect(&self, abstract_self: &JSRef<Element>) -> Unrooted<ClientRect>;
+    fn GetInnerHTML(&self, abstract_self: &JSRef<Element>) -> Fallible<DOMString>;
+    fn GetOuterHTML(&self, abstract_self: &JSRef<Element>) -> Fallible<DOMString>;
+    fn Children(&self, abstract_self: &JSRef<Element>) -> Unrooted<HTMLCollection>;
+}
+
+impl<'a> ElementMethods for JSRef<'a, Element> {
     // http://dom.spec.whatwg.org/#dom-element-namespaceuri
-    pub fn NamespaceURI(&self) -> DOMString {
+    fn NamespaceURI(&self) -> DOMString {
         self.namespace.to_str().to_owned()
     }
 
-    pub fn LocalName(&self) -> DOMString {
+    fn LocalName(&self) -> DOMString {
         self.local_name.clone()
     }
 
     // http://dom.spec.whatwg.org/#dom-element-prefix
-    pub fn GetPrefix(&self) -> Option<DOMString> {
+    fn GetPrefix(&self) -> Option<DOMString> {
         self.prefix.clone()
     }
 
     // http://dom.spec.whatwg.org/#dom-element-tagname
-    pub fn TagName(&self) -> DOMString {
+    fn TagName(&self) -> DOMString {
         match self.prefix {
             None => {
                 self.local_name.to_ascii_upper()
@@ -486,42 +514,42 @@ impl Element {
     }
 
     // http://dom.spec.whatwg.org/#dom-element-id
-    pub fn Id(&self, abstract_self: &JSRef<Element>) -> DOMString {
+    fn Id(&self, abstract_self: &JSRef<Element>) -> DOMString {
         abstract_self.get_string_attribute("id")
     }
 
     // http://dom.spec.whatwg.org/#dom-element-id
-    pub fn SetId(&mut self, abstract_self: &mut JSRef<Element>, id: DOMString) {
+    fn SetId(&mut self, abstract_self: &mut JSRef<Element>, id: DOMString) {
         abstract_self.set_string_attribute("id", id);
     }
 
     // http://dom.spec.whatwg.org/#dom-element-classname
-    pub fn ClassName(&self, abstract_self: &JSRef<Element>) -> DOMString {
+    fn ClassName(&self, abstract_self: &JSRef<Element>) -> DOMString {
         abstract_self.get_string_attribute("class")
     }
 
     // http://dom.spec.whatwg.org/#dom-element-classname
-    pub fn SetClassName(&self, abstract_self: &mut JSRef<Element>, class: DOMString) {
+    fn SetClassName(&self, abstract_self: &mut JSRef<Element>, class: DOMString) {
         abstract_self.set_string_attribute("class", class);
     }
 
     // http://dom.spec.whatwg.org/#dom-element-attributes
-    pub fn Attributes(&mut self, abstract_self: &JSRef<Element>) -> Unrooted<AttrList> {
+    fn Attributes(&mut self, abstract_self: &JSRef<Element>) -> Unrooted<AttrList> {
         let roots = RootCollection::new();
         match self.attr_list {
-            None => {
-                let doc = self.node.owner_doc().root(&roots);
-                let window = doc.deref().window.root(&roots);
-                let list = AttrList::new(&window.root_ref(), abstract_self);
-                self.attr_list.assign(Some(list));
-                Unrooted::new(self.attr_list.get_ref().clone())
-            }
-            Some(ref list) => Unrooted::new(list.clone())
+            None => (),
+            Some(ref list) => return Unrooted::new(list.clone()),
         }
+
+        let doc = self.node.owner_doc().root(&roots);
+        let window = doc.deref().window.root(&roots);
+        let list = AttrList::new(&window.root_ref(), abstract_self);
+        self.attr_list.assign(Some(list));
+        Unrooted::new(self.attr_list.get_ref().clone())
     }
 
     // http://dom.spec.whatwg.org/#dom-element-getattribute
-    pub fn GetAttribute(&self, abstract_self: &JSRef<Element>, name: DOMString) -> Option<DOMString> {
+    fn GetAttribute(&self, abstract_self: &JSRef<Element>, name: DOMString) -> Option<DOMString> {
         let roots = RootCollection::new();
         let name = if abstract_self.get().html_element_in_html_document() {
             name.to_ascii_lower()
@@ -533,7 +561,7 @@ impl Element {
     }
 
     // http://dom.spec.whatwg.org/#dom-element-getattributens
-    pub fn GetAttributeNS(&self, abstract_self: &JSRef<Element>,
+    fn GetAttributeNS(&self, abstract_self: &JSRef<Element>,
                           namespace: Option<DOMString>,
                           local_name: DOMString) -> Option<DOMString> {
         let roots = RootCollection::new();
@@ -543,25 +571,25 @@ impl Element {
     }
 
     // http://dom.spec.whatwg.org/#dom-element-setattribute
-    pub fn SetAttribute(&self, abstract_self: &mut JSRef<Element>,
-                        name: DOMString,
-                        value: DOMString) -> ErrorResult {
+    fn SetAttribute(&self, abstract_self: &mut JSRef<Element>,
+                    name: DOMString,
+                    value: DOMString) -> ErrorResult {
         abstract_self.SetAttribute_(name, value)
     }
 
     // http://dom.spec.whatwg.org/#dom-element-setattributens
-    pub fn SetAttributeNS(&self,
-                          abstract_self: &mut JSRef<Element>,
-                          namespace_url: Option<DOMString>,
-                          name: DOMString,
-                          value: DOMString) -> ErrorResult {
+    fn SetAttributeNS(&self,
+                      abstract_self: &mut JSRef<Element>,
+                      namespace_url: Option<DOMString>,
+                      name: DOMString,
+                      value: DOMString) -> ErrorResult {
         abstract_self.SetAttributeNS_(namespace_url, name, value)
     }
 
     // http://dom.spec.whatwg.org/#dom-element-removeattribute
-    pub fn RemoveAttribute(&mut self,
-                           abstract_self: &mut JSRef<Element>,
-                           name: DOMString) -> ErrorResult {
+    fn RemoveAttribute(&mut self,
+                       abstract_self: &mut JSRef<Element>,
+                       name: DOMString) -> ErrorResult {
         let name = if self.html_element_in_html_document() {
             name.to_ascii_lower()
         } else {
@@ -571,7 +599,7 @@ impl Element {
     }
 
     // http://dom.spec.whatwg.org/#dom-element-removeattributens
-    pub fn RemoveAttributeNS(&mut self,
+    fn RemoveAttributeNS(&mut self,
                              abstract_self: &mut JSRef<Element>,
                              namespace: Option<DOMString>,
                              localname: DOMString) -> ErrorResult {
@@ -580,25 +608,25 @@ impl Element {
     }
 
     // http://dom.spec.whatwg.org/#dom-element-hasattribute
-    pub fn HasAttribute(&self, abstract_self: &JSRef<Element>,
+    fn HasAttribute(&self, abstract_self: &JSRef<Element>,
                         name: DOMString) -> bool {
         self.GetAttribute(abstract_self, name).is_some()
     }
 
     // http://dom.spec.whatwg.org/#dom-element-hasattributens
-    pub fn HasAttributeNS(&self, abstract_self: &JSRef<Element>,
+    fn HasAttributeNS(&self, abstract_self: &JSRef<Element>,
                           namespace: Option<DOMString>,
                           local_name: DOMString) -> bool {
         self.GetAttributeNS(abstract_self, namespace, local_name).is_some()
     }
 
-    pub fn GetElementsByTagName(&self, abstract_self: &JSRef<Element>, localname: DOMString) -> Unrooted<HTMLCollection> {
+    fn GetElementsByTagName(&self, abstract_self: &JSRef<Element>, localname: DOMString) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         let window = window_from_node(abstract_self).root(&roots);
         HTMLCollection::by_tag_name(&*window, NodeCast::from_ref(abstract_self), localname)
     }
 
-    pub fn GetElementsByTagNameNS(&self, abstract_self: &JSRef<Element>, maybe_ns: Option<DOMString>,
+    fn GetElementsByTagNameNS(&self, abstract_self: &JSRef<Element>, maybe_ns: Option<DOMString>,
                                   localname: DOMString) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         let namespace = match maybe_ns {
@@ -609,14 +637,14 @@ impl Element {
         HTMLCollection::by_tag_name_ns(&*window, NodeCast::from_ref(abstract_self), localname, namespace)
     }
 
-    pub fn GetElementsByClassName(&self, abstract_self: &JSRef<Element>, classes: DOMString) -> Unrooted<HTMLCollection> {
+    fn GetElementsByClassName(&self, abstract_self: &JSRef<Element>, classes: DOMString) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         let window = window_from_node(abstract_self).root(&roots);
         HTMLCollection::by_class_name(&*window, NodeCast::from_ref(abstract_self), classes)
     }
 
     // http://dev.w3.org/csswg/cssom-view/#dom-element-getclientrects
-    pub fn GetClientRects(&self, abstract_self: &JSRef<Element>) -> Unrooted<ClientRectList> {
+    fn GetClientRects(&self, abstract_self: &JSRef<Element>) -> Unrooted<ClientRectList> {
         let roots = RootCollection::new();
         let win = window_from_node(abstract_self).root(&roots);
         let node: &JSRef<Node> = NodeCast::from_ref(abstract_self);
@@ -634,7 +662,7 @@ impl Element {
     }
 
     // http://dev.w3.org/csswg/cssom-view/#dom-element-getboundingclientrect
-    pub fn GetBoundingClientRect(&self, abstract_self: &JSRef<Element>) -> Unrooted<ClientRect> {
+    fn GetBoundingClientRect(&self, abstract_self: &JSRef<Element>) -> Unrooted<ClientRect> {
         let roots = RootCollection::new();
         let win = window_from_node(abstract_self).root(&roots);
         let node: &JSRef<Node> = NodeCast::from_ref(abstract_self);
@@ -647,18 +675,18 @@ impl Element {
             rect.origin.x + rect.size.width)
     }
 
-    pub fn GetInnerHTML(&self, abstract_self: &JSRef<Element>) -> Fallible<DOMString> {
+    fn GetInnerHTML(&self, abstract_self: &JSRef<Element>) -> Fallible<DOMString> {
         //XXX TODO: XML case
         let roots = RootCollection::new();
         Ok(serialize(&mut NodeIterator::new(&roots, NodeCast::from_ref(abstract_self), false, false)))
     }
 
-    pub fn GetOuterHTML(&self, abstract_self: &JSRef<Element>) -> Fallible<DOMString> {
+    fn GetOuterHTML(&self, abstract_self: &JSRef<Element>) -> Fallible<DOMString> {
         let roots = RootCollection::new();
         Ok(serialize(&mut NodeIterator::new(&roots, NodeCast::from_ref(abstract_self), true, false)))
     }
 
-    pub fn Children(&self, abstract_self: &JSRef<Element>) -> Unrooted<HTMLCollection> {
+    fn Children(&self, abstract_self: &JSRef<Element>) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         let window = window_from_node(abstract_self).root(&roots);
         HTMLCollection::children(&window.root_ref(), NodeCast::from_ref(abstract_self))
@@ -701,7 +729,8 @@ impl<'a> VirtualMethods for JSRef<'a, Element> {
                 let node: &JSRef<Node> = NodeCast::from_ref(self);
                 if node.is_in_doc() {
                     let mut doc = document_from_node(self).root(&roots);
-                    doc.register_named_element(self, value.clone());
+                    let doc_alias = (*doc).clone();
+                    doc.register_named_element(&doc_alias, self, value.clone());
                 }
             }
             _ => ()
@@ -744,7 +773,8 @@ impl<'a> VirtualMethods for JSRef<'a, Element> {
         match self.get_attribute(Null, "id").root(&roots) {
             Some(attr) => {
                 let mut doc = document_from_node(self).root(&roots);
-                doc.register_named_element(self, attr.deref().Value());
+                let doc_alias = (*doc).clone();
+                doc.register_named_element(&doc_alias, self, attr.deref().Value());
             }
             _ => ()
         }
diff --git a/src/components/script/dom/event.rs b/src/components/script/dom/event.rs
index 68f83a5d509..08fdc818ed6 100644
--- a/src/components/script/dom/event.rs
+++ b/src/components/script/dom/event.rs
@@ -86,54 +86,81 @@ impl Event {
                            EventBinding::Wrap)
     }
 
-    pub fn EventPhase(&self) -> u16 {
+    pub fn Constructor(global: &JSRef<Window>,
+                       type_: DOMString,
+                       init: &EventBinding::EventInit) -> Fallible<Unrooted<Event>> {
+        let roots = RootCollection::new();
+        let mut ev = Event::new(global).root(&roots);
+        ev.InitEvent(type_, init.bubbles, init.cancelable);
+        Ok(Unrooted::new_rooted(&*ev))
+    }
+}
+
+pub trait EventMethods {
+    fn EventPhase(&self) -> u16;
+    fn Type(&self) -> DOMString;
+    fn GetTarget(&self) -> Option<Unrooted<EventTarget>>;
+    fn GetCurrentTarget(&self) -> Option<Unrooted<EventTarget>>;
+    fn DefaultPrevented(&self) -> bool;
+    fn PreventDefault(&mut self);
+    fn StopPropagation(&mut self);
+    fn StopImmediatePropagation(&mut self);
+    fn Bubbles(&self) -> bool;
+    fn Cancelable(&self) -> bool;
+    fn TimeStamp(&self) -> u64;
+    fn InitEvent(&mut self, type_: DOMString, bubbles: bool, cancelable: bool);
+    fn IsTrusted(&self) -> bool;
+}
+
+impl<'a> EventMethods for JSRef<'a, Event> {
+    fn EventPhase(&self) -> u16 {
         self.phase as u16
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         self.type_.clone()
     }
 
-    pub fn GetTarget(&self) -> Option<Unrooted<EventTarget>> {
+    fn GetTarget(&self) -> Option<Unrooted<EventTarget>> {
         self.target.as_ref().map(|target| Unrooted::new(target.clone()))
     }
 
-    pub fn GetCurrentTarget(&self) -> Option<Unrooted<EventTarget>> {
+    fn GetCurrentTarget(&self) -> Option<Unrooted<EventTarget>> {
         self.current_target.as_ref().map(|target| Unrooted::new(target.clone()))
     }
 
-    pub fn DefaultPrevented(&self) -> bool {
+    fn DefaultPrevented(&self) -> bool {
         self.canceled
     }
 
-    pub fn PreventDefault(&mut self) {
+    fn PreventDefault(&mut self) {
         if self.cancelable {
             self.canceled = true
         }
     }
 
-    pub fn StopPropagation(&mut self) {
+    fn StopPropagation(&mut self) {
         self.stop_propagation = true;
     }
 
-    pub fn StopImmediatePropagation(&mut self) {
+    fn StopImmediatePropagation(&mut self) {
         self.stop_immediate = true;
         self.stop_propagation = true;
     }
 
-    pub fn Bubbles(&self) -> bool {
+    fn Bubbles(&self) -> bool {
         self.bubbles
     }
 
-    pub fn Cancelable(&self) -> bool {
+    fn Cancelable(&self) -> bool {
         self.cancelable
     }
 
-    pub fn TimeStamp(&self) -> u64 {
+    fn TimeStamp(&self) -> u64 {
         self.timestamp
     }
 
-    pub fn InitEvent(&mut self,
+    fn InitEvent(&mut self,
                      type_: DOMString,
                      bubbles: bool,
                      cancelable: bool) {
@@ -151,18 +178,9 @@ impl Event {
         self.cancelable = cancelable;
     }
 
-    pub fn IsTrusted(&self) -> bool {
+    fn IsTrusted(&self) -> bool {
         self.trusted
     }
-
-    pub fn Constructor(global: &JSRef<Window>,
-                       type_: DOMString,
-                       init: &EventBinding::EventInit) -> Fallible<Unrooted<Event>> {
-        let roots = RootCollection::new();
-        let mut ev = Event::new(global).root(&roots);
-        ev.InitEvent(type_, init.bubbles, init.cancelable);
-        Ok(Unrooted::new_rooted(&*ev))
-    }
 }
 
 impl Reflectable for Event {
diff --git a/src/components/script/dom/eventdispatcher.rs b/src/components/script/dom/eventdispatcher.rs
index 9d45b398e02..a70533da2a1 100644
--- a/src/components/script/dom/eventdispatcher.rs
+++ b/src/components/script/dom/eventdispatcher.rs
@@ -6,7 +6,7 @@ use dom::bindings::callback::ReportExceptions;
 use dom::bindings::codegen::InheritTypes::{EventTargetCast, NodeCast, NodeDerived};
 use dom::bindings::js::{JSRef, OptionalAssignable, RootCollection, Root};
 use dom::eventtarget::{Capturing, Bubbling, EventTarget};
-use dom::event::{Event, PhaseAtTarget, PhaseNone, PhaseBubbling, PhaseCapturing};
+use dom::event::{Event, PhaseAtTarget, PhaseNone, PhaseBubbling, PhaseCapturing, EventMethods};
 use dom::node::{Node, NodeHelpers};
 
 // See http://dom.spec.whatwg.org/#concept-event-dispatch for the full dispatch algorithm
@@ -119,7 +119,6 @@ pub fn dispatch_event<'a>(target: &JSRef<'a, EventTarget>,
         let _ = chain.pop();
     }
 
-    let event = event.get_mut();
     event.dispatching = false;
     event.phase = PhaseNone;
     event.current_target = None;
diff --git a/src/components/script/dom/eventtarget.rs b/src/components/script/dom/eventtarget.rs
index 67dc0ac7af9..d743a011227 100644
--- a/src/components/script/dom/eventtarget.rs
+++ b/src/components/script/dom/eventtarget.rs
@@ -65,10 +65,35 @@ impl EventTarget {
         })
     }
 
-    pub fn AddEventListener(&mut self,
-                            ty: DOMString,
-                            listener: Option<EventListener>,
-                            capture: bool) {
+    pub fn dispatch_event_with_target<'a>(&self,
+                                          abstract_self: &JSRef<'a, EventTarget>,
+                                          abstract_target: Option<JSRef<'a, EventTarget>>,
+                                          event: &mut JSRef<Event>) -> Fallible<bool> {
+        if event.get().dispatching || !event.get().initialized {
+            return Err(InvalidState);
+        }
+        Ok(dispatch_event(abstract_self, abstract_target, event))
+    }
+}
+
+pub trait EventTargetMethods {
+    fn AddEventListener(&mut self,
+                        ty: DOMString,
+                        listener: Option<EventListener>,
+                        capture: bool);
+    fn RemoveEventListener(&mut self,
+                           ty: DOMString,
+                           listener: Option<EventListener>,
+                           capture: bool);
+    fn DispatchEvent(&self, abstract_self: &JSRef<EventTarget>,
+                     event: &mut JSRef<Event>) -> Fallible<bool>;
+}
+
+impl<'a> EventTargetMethods for JSRef<'a, EventTarget> {
+    fn AddEventListener(&mut self,
+                        ty: DOMString,
+                        listener: Option<EventListener>,
+                        capture: bool) {
         for &listener in listener.iter() {
             let entry = self.handlers.find_or_insert_with(ty.clone(), |_| vec!());
             let phase = if capture { Capturing } else { Bubbling };
@@ -82,10 +107,10 @@ impl EventTarget {
         }
     }
 
-    pub fn RemoveEventListener(&mut self,
-                               ty: DOMString,
-                               listener: Option<EventListener>,
-                               capture: bool) {
+    fn RemoveEventListener(&mut self,
+                           ty: DOMString,
+                           listener: Option<EventListener>,
+                           capture: bool) {
         for &listener in listener.iter() {
             let mut entry = self.handlers.find_mut(&ty);
             for entry in entry.mut_iter() {
@@ -102,20 +127,10 @@ impl EventTarget {
         }
     }
 
-    pub fn DispatchEvent(&self, abstract_self: &JSRef<EventTarget>,
-                         event: &mut JSRef<Event>) -> Fallible<bool> {
+    fn DispatchEvent(&self, abstract_self: &JSRef<EventTarget>,
+                     event: &mut JSRef<Event>) -> Fallible<bool> {
         self.dispatch_event_with_target(abstract_self, None, event)
     }
-
-    pub fn dispatch_event_with_target<'a>(&self,
-                                          abstract_self: &JSRef<'a, EventTarget>,
-                                          abstract_target: Option<JSRef<'a, EventTarget>>,
-                                          event: &mut JSRef<Event>) -> Fallible<bool> {
-        if event.get().dispatching || !event.get().initialized {
-            return Err(InvalidState);
-        }
-        Ok(dispatch_event(abstract_self, abstract_target, event))
-    }
 }
 
 impl Reflectable for EventTarget {
diff --git a/src/components/script/dom/formdata.rs b/src/components/script/dom/formdata.rs
index e1a7b0e7ddb..88be3e4314e 100644
--- a/src/components/script/dom/formdata.rs
+++ b/src/components/script/dom/formdata.rs
@@ -41,12 +41,18 @@ impl FormData {
         reflect_dom_object(~FormData::new_inherited(form, window.unrooted()), window, FormDataBinding::Wrap)
     }
 
-    pub fn Constructor(window: &JSRef<Window>, form: Option<JSRef<HTMLFormElement>>)
-                       -> Fallible<Unrooted<FormData>> {
+    pub fn Constructor(window: &JSRef<Window>, form: Option<JSRef<HTMLFormElement>>) -> Fallible<Unrooted<FormData>> {
         Ok(FormData::new(form, window))
     }
+}
 
-    pub fn Append(&mut self, name: DOMString, value: &JSRef<Blob>, filename: Option<DOMString>) {
+pub trait FormDataMethods {
+    fn Append(&mut self, name: DOMString, value: &JSRef<Blob>, filename: Option<DOMString>);
+    fn Append_(&mut self, name: DOMString, value: DOMString);
+}
+
+impl<'a> FormDataMethods for JSRef<'a, FormData> {
+    fn Append(&mut self, name: DOMString, value: &JSRef<Blob>, filename: Option<DOMString>) {
         let blob = BlobData {
             blob: value.unrooted(),
             name: filename.unwrap_or(~"default")
@@ -54,7 +60,7 @@ impl FormData {
         self.data.insert(name.clone(), blob);
     }
 
-    pub fn Append_(&mut self, name: DOMString, value: DOMString) {
+    fn Append_(&mut self, name: DOMString, value: DOMString) {
         self.data.insert(name, StringData(value));
     }
 }
diff --git a/src/components/script/dom/htmlanchorelement.rs b/src/components/script/dom/htmlanchorelement.rs
index d03723402eb..22e7846269c 100644
--- a/src/components/script/dom/htmlanchorelement.rs
+++ b/src/components/script/dom/htmlanchorelement.rs
@@ -40,108 +40,137 @@ impl HTMLAnchorElement {
     }
 }
 
-impl HTMLAnchorElement {
-    pub fn Href(&self) -> DOMString {
+pub trait HTMLAnchorElementMethods {
+    fn Href(&self) -> DOMString;
+    fn SetHref(&mut self, _href: DOMString) -> ErrorResult;
+    fn Target(&self) -> DOMString;
+    fn SetTarget(&self, _target: DOMString) -> ErrorResult;
+    fn Download(&self) -> DOMString;
+    fn SetDownload(&self, _download: DOMString) -> ErrorResult;
+    fn Ping(&self) -> DOMString;
+    fn SetPing(&self, _ping: DOMString) -> ErrorResult;
+    fn Rel(&self) -> DOMString;
+    fn SetRel(&self, _rel: DOMString) -> ErrorResult;
+    fn Hreflang(&self) -> DOMString;
+    fn SetHreflang(&self, _href_lang: DOMString) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult;
+    fn Text(&self) -> DOMString;
+    fn SetText(&mut self, _text: DOMString) -> ErrorResult;
+    fn Coords(&self) -> DOMString;
+    fn SetCoords(&mut self, _coords: DOMString) -> ErrorResult;
+    fn Charset(&self) -> DOMString;
+    fn SetCharset(&mut self, _charset: DOMString) -> ErrorResult;
+    fn Name(&self) -> DOMString;
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult;
+    fn Rev(&self) -> DOMString;
+    fn SetRev(&mut self, _rev: DOMString) -> ErrorResult;
+    fn Shape(&self) -> DOMString;
+    fn SetShape(&mut self, _shape: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLAnchorElementMethods for JSRef<'a, HTMLAnchorElement> {
+    fn Href(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHref(&mut self, _href: DOMString) -> ErrorResult {
+    fn SetHref(&mut self, _href: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Target(&self) -> DOMString {
+    fn Target(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetTarget(&self, _target: DOMString) -> ErrorResult {
+    fn SetTarget(&self, _target: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Download(&self) -> DOMString {
+    fn Download(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetDownload(&self, _download: DOMString) -> ErrorResult {
+    fn SetDownload(&self, _download: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Ping(&self) -> DOMString {
+    fn Ping(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetPing(&self, _ping: DOMString) -> ErrorResult {
+    fn SetPing(&self, _ping: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Rel(&self) -> DOMString {
+    fn Rel(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetRel(&self, _rel: DOMString) -> ErrorResult {
+    fn SetRel(&self, _rel: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Hreflang(&self) -> DOMString {
+    fn Hreflang(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHreflang(&self, _href_lang: DOMString) -> ErrorResult {
+    fn SetHreflang(&self, _href_lang: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetType(&mut self, _type: DOMString) -> ErrorResult {
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Text(&self) -> DOMString {
+    fn Text(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetText(&mut self, _text: DOMString) -> ErrorResult {
+    fn SetText(&mut self, _text: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Coords(&self) -> DOMString {
+    fn Coords(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCoords(&mut self, _coords: DOMString) -> ErrorResult {
+    fn SetCoords(&mut self, _coords: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Charset(&self) -> DOMString {
+    fn Charset(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCharset(&mut self, _charset: DOMString) -> ErrorResult {
+    fn SetCharset(&mut self, _charset: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Name(&self) -> DOMString {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&mut self, _name: DOMString) -> ErrorResult {
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Rev(&self) -> DOMString {
+    fn Rev(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetRev(&mut self, _rev: DOMString) -> ErrorResult {
+    fn SetRev(&mut self, _rev: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Shape(&self) -> DOMString {
+    fn Shape(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetShape(&mut self, _shape: DOMString) -> ErrorResult {
+    fn SetShape(&mut self, _shape: DOMString) -> ErrorResult {
         Ok(())
     }
 }
diff --git a/src/components/script/dom/htmlappletelement.rs b/src/components/script/dom/htmlappletelement.rs
index ea253003fd4..bcf7481d4d7 100644
--- a/src/components/script/dom/htmlappletelement.rs
+++ b/src/components/script/dom/htmlappletelement.rs
@@ -40,92 +40,117 @@ impl HTMLAppletElement {
     }
 }
 
-impl HTMLAppletElement {
-    pub fn Align(&self) -> DOMString {
+pub trait HTMLAppletElementMethods {
+    fn Align(&self) -> DOMString;
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult;
+    fn Alt(&self) -> DOMString;
+    fn SetAlt(&self, _alt: DOMString) -> ErrorResult;
+    fn Archive(&self) -> DOMString;
+    fn SetArchive(&self, _archive: DOMString) -> ErrorResult;
+    fn Code(&self) -> DOMString;
+    fn SetCode(&self, _code: DOMString) -> ErrorResult;
+    fn CodeBase(&self) -> DOMString;
+    fn SetCodeBase(&self, _code_base: DOMString) -> ErrorResult;
+    fn Height(&self) -> DOMString;
+    fn SetHeight(&self, _height: DOMString) -> ErrorResult;
+    fn Hspace(&self) -> u32;
+    fn SetHspace(&mut self, _hspace: u32) -> ErrorResult;
+    fn Name(&self) -> DOMString;
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult;
+    fn Object(&self) -> DOMString;
+    fn SetObject(&mut self, _object: DOMString) -> ErrorResult;
+    fn Vspace(&self) -> u32;
+    fn SetVspace(&mut self, _vspace: u32) -> ErrorResult;
+    fn Width(&self) -> DOMString;
+    fn SetWidth(&mut self, _width: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLAppletElementMethods for JSRef<'a, HTMLAppletElement> {
+    fn Align(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Alt(&self) -> DOMString {
+    fn Alt(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlt(&self, _alt: DOMString) -> ErrorResult {
+    fn SetAlt(&self, _alt: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Archive(&self) -> DOMString {
+    fn Archive(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetArchive(&self, _archive: DOMString) -> ErrorResult {
+    fn SetArchive(&self, _archive: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Code(&self) -> DOMString {
+    fn Code(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCode(&self, _code: DOMString) -> ErrorResult {
+    fn SetCode(&self, _code: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn CodeBase(&self) -> DOMString {
+    fn CodeBase(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCodeBase(&self, _code_base: DOMString) -> ErrorResult {
+    fn SetCodeBase(&self, _code_base: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Height(&self) -> DOMString {
+    fn Height(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHeight(&self, _height: DOMString) -> ErrorResult {
+    fn SetHeight(&self, _height: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Hspace(&self) -> u32 {
+    fn Hspace(&self) -> u32 {
         0
     }
 
-    pub fn SetHspace(&mut self, _hspace: u32) -> ErrorResult {
+    fn SetHspace(&mut self, _hspace: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Name(&self) -> DOMString {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&mut self, _name: DOMString) -> ErrorResult {
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Object(&self) -> DOMString {
+    fn Object(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetObject(&mut self, _object: DOMString) -> ErrorResult {
+    fn SetObject(&mut self, _object: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Vspace(&self) -> u32 {
+    fn Vspace(&self) -> u32 {
         0
     }
 
-    pub fn SetVspace(&mut self, _vspace: u32) -> ErrorResult {
+    fn SetVspace(&mut self, _vspace: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Width(&self) -> DOMString {
+    fn Width(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetWidth(&mut self, _width: DOMString) -> ErrorResult {
+    fn SetWidth(&mut self, _width: DOMString) -> ErrorResult {
         Ok(())
     }
 }
diff --git a/src/components/script/dom/htmlareaelement.rs b/src/components/script/dom/htmlareaelement.rs
index d98f2033b77..d22e8a45a67 100644
--- a/src/components/script/dom/htmlareaelement.rs
+++ b/src/components/script/dom/htmlareaelement.rs
@@ -40,68 +40,87 @@ impl HTMLAreaElement {
     }
 }
 
-impl HTMLAreaElement {
-    pub fn Alt(&self) -> DOMString {
+pub trait HTMLAreaElementMethods {
+    fn Alt(&self) -> DOMString;
+    fn SetAlt(&self, _alt: DOMString) -> ErrorResult;
+    fn Coords(&self) -> DOMString;
+    fn SetCoords(&self, _coords: DOMString) -> ErrorResult;
+    fn Shape(&self) -> DOMString;
+    fn SetShape(&self, _shape: DOMString) -> ErrorResult;
+    fn Href(&self) -> DOMString;
+    fn SetHref(&self, _href: DOMString) -> ErrorResult;
+    fn Target(&self) -> DOMString;
+    fn SetTarget(&self, _target: DOMString) -> ErrorResult;
+    fn Download(&self) -> DOMString;
+    fn SetDownload(&self, _download: DOMString) -> ErrorResult;
+    fn Ping(&self) -> DOMString;
+    fn SetPing(&self, _ping: DOMString) -> ErrorResult;
+    fn NoHref(&self) -> bool;
+    fn SetNoHref(&mut self, _no_href: bool) -> ErrorResult;
+}
+
+impl<'a> HTMLAreaElementMethods for JSRef<'a, HTMLAreaElement> {
+    fn Alt(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlt(&self, _alt: DOMString) -> ErrorResult {
+    fn SetAlt(&self, _alt: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Coords(&self) -> DOMString {
+    fn Coords(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCoords(&self, _coords: DOMString) -> ErrorResult {
+    fn SetCoords(&self, _coords: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Shape(&self) -> DOMString {
+    fn Shape(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetShape(&self, _shape: DOMString) -> ErrorResult {
+    fn SetShape(&self, _shape: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Href(&self) -> DOMString {
+    fn Href(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHref(&self, _href: DOMString) -> ErrorResult {
+    fn SetHref(&self, _href: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Target(&self) -> DOMString {
+    fn Target(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetTarget(&self, _target: DOMString) -> ErrorResult {
+    fn SetTarget(&self, _target: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Download(&self) -> DOMString {
+    fn Download(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetDownload(&self, _download: DOMString) -> ErrorResult {
+    fn SetDownload(&self, _download: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Ping(&self) -> DOMString {
+    fn Ping(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetPing(&self, _ping: DOMString) -> ErrorResult {
+    fn SetPing(&self, _ping: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn NoHref(&self) -> bool {
+    fn NoHref(&self) -> bool {
         false
     }
 
-    pub fn SetNoHref(&mut self, _no_href: bool) -> ErrorResult {
+    fn SetNoHref(&mut self, _no_href: bool) -> ErrorResult {
         Ok(())
     }
 }
diff --git a/src/components/script/dom/htmlaudioelement.rs b/src/components/script/dom/htmlaudioelement.rs
index a4ea33c7052..7e3826dd4c6 100644
--- a/src/components/script/dom/htmlaudioelement.rs
+++ b/src/components/script/dom/htmlaudioelement.rs
@@ -38,3 +38,6 @@ impl HTMLAudioElement {
         Node::reflect_node(~element, document, HTMLAudioElementBinding::Wrap)
     }
 }
+
+pub trait HTMLAudioElementMethods {
+}
diff --git a/src/components/script/dom/htmlbaseelement.rs b/src/components/script/dom/htmlbaseelement.rs
index bfaf1a74410..83cdf3607ac 100644
--- a/src/components/script/dom/htmlbaseelement.rs
+++ b/src/components/script/dom/htmlbaseelement.rs
@@ -40,20 +40,28 @@ impl HTMLBaseElement {
     }
 }
 
-impl HTMLBaseElement {
-    pub fn Href(&self) -> DOMString {
+pub trait HTMLBaseElementMethods {
+    fn Href(&self) -> DOMString;
+    fn SetHref(&self, _href: DOMString) -> ErrorResult;
+    fn Target(&self) -> DOMString;
+    fn SetTarget(&self, _target: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLBaseElementMethods for JSRef<'a, HTMLBaseElement> {
+    fn Href(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHref(&self, _href: DOMString) -> ErrorResult {
+    fn SetHref(&self, _href: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Target(&self) -> DOMString {
+    fn Target(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetTarget(&self, _target: DOMString) -> ErrorResult {
+    fn SetTarget(&self, _target: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlbodyelement.rs b/src/components/script/dom/htmlbodyelement.rs
index 22b41c283ba..cb59f0c6fb4 100644
--- a/src/components/script/dom/htmlbodyelement.rs
+++ b/src/components/script/dom/htmlbodyelement.rs
@@ -40,52 +40,68 @@ impl HTMLBodyElement {
     }
 }
 
-impl HTMLBodyElement {
-    pub fn Text(&self) -> DOMString {
+pub trait HTMLBodyElementMethods {
+    fn Text(&self) -> DOMString;
+    fn SetText(&mut self, _text: DOMString) -> ErrorResult;
+    fn Link(&self) -> DOMString;
+    fn SetLink(&self, _link: DOMString) -> ErrorResult;
+    fn VLink(&self) -> DOMString;
+    fn SetVLink(&self, _v_link: DOMString) -> ErrorResult;
+    fn ALink(&self) -> DOMString;
+    fn SetALink(&self, _a_link: DOMString) -> ErrorResult;
+    fn BgColor(&self) -> DOMString;
+    fn SetBgColor(&self, _bg_color: DOMString) -> ErrorResult;
+    fn Background(&self) -> DOMString;
+    fn SetBackground(&self, _background: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLBodyElementMethods for JSRef<'a, HTMLBodyElement> {
+    fn Text(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetText(&mut self, _text: DOMString) -> ErrorResult {
+    fn SetText(&mut self, _text: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Link(&self) -> DOMString {
+    fn Link(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetLink(&self, _link: DOMString) -> ErrorResult {
+    fn SetLink(&self, _link: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn VLink(&self) -> DOMString {
+    fn VLink(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetVLink(&self, _v_link: DOMString) -> ErrorResult {
+    fn SetVLink(&self, _v_link: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn ALink(&self) -> DOMString {
+    fn ALink(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetALink(&self, _a_link: DOMString) -> ErrorResult {
+    fn SetALink(&self, _a_link: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn BgColor(&self) -> DOMString {
+    fn BgColor(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetBgColor(&self, _bg_color: DOMString) -> ErrorResult {
+    fn SetBgColor(&self, _bg_color: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Background(&self) -> DOMString {
+    fn Background(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetBackground(&self, _background: DOMString) -> ErrorResult {
+    fn SetBackground(&self, _background: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlbrelement.rs b/src/components/script/dom/htmlbrelement.rs
index 5e23734042c..5b06b1467ea 100644
--- a/src/components/script/dom/htmlbrelement.rs
+++ b/src/components/script/dom/htmlbrelement.rs
@@ -40,12 +40,18 @@ impl HTMLBRElement {
     }
 }
 
-impl HTMLBRElement {
-    pub fn Clear(&self) -> DOMString {
+pub trait HTMLBRElementMethods {
+    fn Clear(&self) -> DOMString;
+    fn SetClear(&mut self, _text: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLBRElementMethods for JSRef<'a, HTMLBRElement> {
+    fn Clear(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetClear(&mut self, _text: DOMString) -> ErrorResult {
+    fn SetClear(&mut self, _text: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlbuttonelement.rs b/src/components/script/dom/htmlbuttonelement.rs
index 30f031f8058..2b2b04aca35 100644
--- a/src/components/script/dom/htmlbuttonelement.rs
+++ b/src/components/script/dom/htmlbuttonelement.rs
@@ -42,119 +42,152 @@ impl HTMLButtonElement {
     }
 }
 
-impl HTMLButtonElement {
-    pub fn Autofocus(&self) -> bool {
+pub trait HTMLButtonElementMethods {
+    fn Autofocus(&self) -> bool;
+    fn SetAutofocus(&mut self, _autofocus: bool) -> ErrorResult;
+    fn Disabled(&self) -> bool;
+    fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult;
+    fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>>;
+    fn FormAction(&self) -> DOMString;
+    fn SetFormAction(&mut self, _formaction: DOMString) -> ErrorResult;
+    fn FormEnctype(&self) -> DOMString;
+    fn SetFormEnctype(&mut self, _formenctype: DOMString) -> ErrorResult;
+    fn FormMethod(&self) -> DOMString;
+    fn SetFormMethod(&mut self, _formmethod: DOMString) -> ErrorResult;
+    fn FormNoValidate(&self) -> bool;
+    fn SetFormNoValidate(&mut self, _novalidate: bool) -> ErrorResult;
+    fn FormTarget(&self) -> DOMString;
+    fn SetFormTarget(&mut self, _formtarget: DOMString) -> ErrorResult;
+    fn Name(&self) -> DOMString;
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult;
+    fn Value(&self) -> DOMString;
+    fn SetValue(&mut self, _value: DOMString) -> ErrorResult;
+    fn WillValidate(&self) -> bool;
+    fn SetWillValidate(&mut self, _will_validate: bool);
+    fn Validity(&self) -> Unrooted<ValidityState>;
+    fn SetValidity(&mut self, _validity: JS<ValidityState>);
+    fn ValidationMessage(&self) -> DOMString;
+    fn SetValidationMessage(&mut self, _message: DOMString) -> ErrorResult;
+    fn CheckValidity(&self) -> bool;
+    fn SetCustomValidity(&mut self, _error: DOMString);
+}
+
+impl<'a> HTMLButtonElementMethods for JSRef<'a, HTMLButtonElement> {
+    fn Autofocus(&self) -> bool {
         false
     }
 
-    pub fn SetAutofocus(&mut self, _autofocus: bool) -> ErrorResult {
+    fn SetAutofocus(&mut self, _autofocus: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Disabled(&self) -> bool {
+    fn Disabled(&self) -> bool {
         false
     }
 
-    pub fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult {
+    fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>> {
+    fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>> {
         None
     }
 
-    pub fn FormAction(&self) -> DOMString {
+    fn FormAction(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetFormAction(&mut self, _formaction: DOMString) -> ErrorResult {
+    fn SetFormAction(&mut self, _formaction: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn FormEnctype(&self) -> DOMString {
+    fn FormEnctype(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetFormEnctype(&mut self, _formenctype: DOMString) -> ErrorResult {
+    fn SetFormEnctype(&mut self, _formenctype: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn FormMethod(&self) -> DOMString {
+    fn FormMethod(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetFormMethod(&mut self, _formmethod: DOMString) -> ErrorResult {
+    fn SetFormMethod(&mut self, _formmethod: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn FormNoValidate(&self) -> bool {
+    fn FormNoValidate(&self) -> bool {
         false
     }
 
-    pub fn SetFormNoValidate(&mut self, _novalidate: bool) -> ErrorResult {
+    fn SetFormNoValidate(&mut self, _novalidate: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn FormTarget(&self) -> DOMString {
+    fn FormTarget(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetFormTarget(&mut self, _formtarget: DOMString) -> ErrorResult {
+    fn SetFormTarget(&mut self, _formtarget: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Name(&self) -> DOMString {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&mut self, _name: DOMString) -> ErrorResult {
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetType(&mut self, _type: DOMString) -> ErrorResult {
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Value(&self) -> DOMString {
+    fn Value(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetValue(&mut self, _value: DOMString) -> ErrorResult {
+    fn SetValue(&mut self, _value: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn WillValidate(&self) -> bool {
+    fn WillValidate(&self) -> bool {
         false
     }
 
-    pub fn SetWillValidate(&mut self, _will_validate: bool) {
+    fn SetWillValidate(&mut self, _will_validate: bool) {
     }
 
-    pub fn Validity(&self) -> Unrooted<ValidityState> {
+    fn Validity(&self) -> Unrooted<ValidityState> {
         let roots = RootCollection::new();
         let doc = self.htmlelement.element.node.owner_doc().root(&roots);
         ValidityState::new(&*doc.deref().window.root(&roots))
     }
 
-    pub fn SetValidity(&mut self, _validity: JS<ValidityState>) {
+    fn SetValidity(&mut self, _validity: JS<ValidityState>) {
     }
 
-    pub fn ValidationMessage(&self) -> DOMString {
+    fn ValidationMessage(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetValidationMessage(&mut self, _message: DOMString) -> ErrorResult {
+    fn SetValidationMessage(&mut self, _message: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn CheckValidity(&self) -> bool {
+    fn CheckValidity(&self) -> bool {
         true
     }
 
-    pub fn SetCustomValidity(&mut self, _error: DOMString) {
+    fn SetCustomValidity(&mut self, _error: DOMString) {
     }
 }
+
diff --git a/src/components/script/dom/htmlcanvaselement.rs b/src/components/script/dom/htmlcanvaselement.rs
index 469bb8b8643..32af35a06b7 100644
--- a/src/components/script/dom/htmlcanvaselement.rs
+++ b/src/components/script/dom/htmlcanvaselement.rs
@@ -40,20 +40,28 @@ impl HTMLCanvasElement {
     }
 }
 
-impl HTMLCanvasElement {
-    pub fn Width(&self) -> u32 {
+pub trait HTMLCanvasElementMethods {
+    fn Width(&self) -> u32;
+    fn SetWidth(&mut self, _width: u32) -> ErrorResult;
+    fn Height(&self) -> u32;
+    fn SetHeight(&mut self, _height: u32) -> ErrorResult;
+}
+
+impl<'a> HTMLCanvasElementMethods for JSRef<'a, HTMLCanvasElement> {
+    fn Width(&self) -> u32 {
         0
     }
 
-    pub fn SetWidth(&mut self, _width: u32) -> ErrorResult {
+    fn SetWidth(&mut self, _width: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Height(&self) -> u32 {
+    fn Height(&self) -> u32 {
         0
     }
 
-    pub fn SetHeight(&mut self, _height: u32) -> ErrorResult {
+    fn SetHeight(&mut self, _height: u32) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlcollection.rs b/src/components/script/dom/htmlcollection.rs
index 73b4835ff2e..77ddb563805 100644
--- a/src/components/script/dom/htmlcollection.rs
+++ b/src/components/script/dom/htmlcollection.rs
@@ -118,9 +118,17 @@ impl HTMLCollection {
     }
 }
 
-impl HTMLCollection {
+pub trait HTMLCollectionMethods {
+    fn Length(&self) -> u32;
+    fn Item(&self, index: u32) -> Option<Unrooted<Element>>;
+    fn NamedItem(&self, key: DOMString) -> Option<Unrooted<Element>>;
+    fn IndexedGetter(&self, index: u32, found: &mut bool) -> Option<Unrooted<Element>>;
+    fn NamedGetter(&self, maybe_name: Option<DOMString>, found: &mut bool) -> Option<Unrooted<Element>>;
+}
+
+impl<'a> HTMLCollectionMethods for JSRef<'a, HTMLCollection> {
     // http://dom.spec.whatwg.org/#dom-htmlcollection-length
-    pub fn Length(&self) -> u32 {
+    fn Length(&self) -> u32 {
         let roots = RootCollection::new();
         match self.collection {
             Static(ref elems) => elems.len() as u32,
@@ -136,7 +144,7 @@ impl HTMLCollection {
     }
 
     // http://dom.spec.whatwg.org/#dom-htmlcollection-item
-    pub fn Item(&self, index: u32) -> Option<Unrooted<Element>> {
+    fn Item(&self, index: u32) -> Option<Unrooted<Element>> {
         let roots = RootCollection::new();
         match self.collection {
             Static(ref elems) => elems
@@ -159,7 +167,7 @@ impl HTMLCollection {
     }
 
     // http://dom.spec.whatwg.org/#dom-htmlcollection-nameditem
-    pub fn NamedItem(&self, key: DOMString) -> Option<Unrooted<Element>> {
+    fn NamedItem(&self, key: DOMString) -> Option<Unrooted<Element>> {
         let roots = RootCollection::new();
 
         // Step 1.
@@ -190,16 +198,14 @@ impl HTMLCollection {
             }
         }
     }
-}
 
-impl HTMLCollection {
-    pub fn IndexedGetter(&self, index: u32, found: &mut bool) -> Option<Unrooted<Element>> {
+    fn IndexedGetter(&self, index: u32, found: &mut bool) -> Option<Unrooted<Element>> {
         let maybe_elem = self.Item(index);
         *found = maybe_elem.is_some();
         maybe_elem
     }
 
-    pub fn NamedGetter(&self, maybe_name: Option<DOMString>, found: &mut bool) -> Option<Unrooted<Element>> {
+    fn NamedGetter(&self, maybe_name: Option<DOMString>, found: &mut bool) -> Option<Unrooted<Element>> {
         match maybe_name {
             Some(name) => {
                 let maybe_elem = self.NamedItem(name);
diff --git a/src/components/script/dom/htmldataelement.rs b/src/components/script/dom/htmldataelement.rs
index 767b3b18598..4e412665595 100644
--- a/src/components/script/dom/htmldataelement.rs
+++ b/src/components/script/dom/htmldataelement.rs
@@ -40,12 +40,18 @@ impl HTMLDataElement {
     }
 }
 
-impl HTMLDataElement {
-    pub fn Value(&self) -> DOMString {
+pub trait HTMLDataElementMethods {
+    fn Value(&self) -> DOMString;
+    fn SetValue(&mut self, _value: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLDataElementMethods for JSRef<'a, HTMLDataElement> {
+    fn Value(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetValue(&mut self, _value: DOMString) -> ErrorResult {
+    fn SetValue(&mut self, _value: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmldatalistelement.rs b/src/components/script/dom/htmldatalistelement.rs
index e4ac02bd83f..9fcb291ae4f 100644
--- a/src/components/script/dom/htmldatalistelement.rs
+++ b/src/components/script/dom/htmldatalistelement.rs
@@ -40,8 +40,12 @@ impl HTMLDataListElement {
     }
 }
 
-impl HTMLDataListElement {
-    pub fn Options(&self, abstract_self: &JSRef<HTMLDataListElement>) -> Unrooted<HTMLCollection> {
+pub trait HTMLDataListElementMethods {
+    fn Options(&self, abstract_self: &JSRef<HTMLDataListElement>) -> Unrooted<HTMLCollection>;
+}
+
+impl<'a> HTMLDataListElementMethods for JSRef<'a, HTMLDataListElement> {
+    fn Options(&self, abstract_self: &JSRef<HTMLDataListElement>) -> Unrooted<HTMLCollection> {
         struct HTMLDataListOptionsFilter;
         impl CollectionFilter for HTMLDataListOptionsFilter {
             fn filter(&self, elem: &JSRef<Element>, _root: &JSRef<Node>) -> bool {
@@ -55,3 +59,4 @@ impl HTMLDataListElement {
         HTMLCollection::create(&*window, node, filter)
     }
 }
+
diff --git a/src/components/script/dom/htmldirectoryelement.rs b/src/components/script/dom/htmldirectoryelement.rs
index f4b77ee5cf0..cc7dd99920b 100644
--- a/src/components/script/dom/htmldirectoryelement.rs
+++ b/src/components/script/dom/htmldirectoryelement.rs
@@ -40,12 +40,18 @@ impl HTMLDirectoryElement {
     }
 }
 
-impl HTMLDirectoryElement {
-    pub fn Compact(&self) -> bool {
+pub trait HTMLDirectoryElementMethods {
+    fn Compact(&self) -> bool;
+    fn SetCompact(&mut self, _compact: bool) -> ErrorResult;
+}
+
+impl<'a> HTMLDirectoryElementMethods for JSRef<'a, HTMLDirectoryElement> {
+    fn Compact(&self) -> bool {
         false
     }
 
-    pub fn SetCompact(&mut self, _compact: bool) -> ErrorResult {
+    fn SetCompact(&mut self, _compact: bool) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmldivelement.rs b/src/components/script/dom/htmldivelement.rs
index 6053582738d..d50b95c72cd 100644
--- a/src/components/script/dom/htmldivelement.rs
+++ b/src/components/script/dom/htmldivelement.rs
@@ -40,12 +40,18 @@ impl HTMLDivElement {
     }
 }
 
-impl HTMLDivElement {
-    pub fn Align(&self) -> DOMString {
+pub trait HTMLDivElementMethods {
+    fn Align(&self) -> DOMString;
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLDivElementMethods for JSRef<'a, HTMLDivElement> {
+    fn Align(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmldlistelement.rs b/src/components/script/dom/htmldlistelement.rs
index 113547af9d6..838c694a33c 100644
--- a/src/components/script/dom/htmldlistelement.rs
+++ b/src/components/script/dom/htmldlistelement.rs
@@ -40,20 +40,28 @@ impl HTMLDListElement {
     }
 }
 
-impl HTMLDListElement {
-    pub fn Compact(&self) -> bool {
+pub trait HTMLDListElementMethods {
+    fn Compact(&self) -> bool;
+    fn SetCompact(&mut self, _compact: bool) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLDListElementMethods for JSRef<'a, HTMLDListElement> {
+    fn Compact(&self) -> bool {
         false
     }
 
-    pub fn SetCompact(&mut self, _compact: bool) -> ErrorResult {
+    fn SetCompact(&mut self, _compact: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetType(&mut self, _type: DOMString) -> ErrorResult {
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlelement.rs b/src/components/script/dom/htmlelement.rs
index d49ce843bd1..c7596688cdb 100644
--- a/src/components/script/dom/htmlelement.rs
+++ b/src/components/script/dom/htmlelement.rs
@@ -45,121 +45,154 @@ impl HTMLElement {
     }
 }
 
-impl HTMLElement {
-    pub fn Title(&self) -> DOMString {
+pub trait HTMLElementMethods {
+    fn Title(&self) -> DOMString;
+    fn SetTitle(&mut self, _title: DOMString);
+    fn Lang(&self) -> DOMString;
+    fn SetLang(&mut self, _lang: DOMString);
+    fn Dir(&self) -> DOMString;
+    fn SetDir(&mut self, _dir: DOMString) -> ErrorResult;
+    fn GetItemValue(&self, _cx: *JSContext) -> Fallible<JSVal>;
+    fn SetItemValue(&mut self, _cx: *JSContext, _val: JSVal) -> ErrorResult;
+    fn Hidden(&self) -> bool;
+    fn SetHidden(&mut self, _hidden: bool) -> ErrorResult;
+    fn Click(&self);
+    fn TabIndex(&self) -> i32;
+    fn SetTabIndex(&mut self, _index: i32) -> ErrorResult;
+    fn Focus(&self) -> ErrorResult;
+    fn Blur(&self) -> ErrorResult;
+    fn AccessKey(&self) -> DOMString;
+    fn SetAccessKey(&self, _key: DOMString) -> ErrorResult;
+    fn AccessKeyLabel(&self) -> DOMString;
+    fn Draggable(&self) -> bool;
+    fn SetDraggable(&mut self, _draggable: bool) -> ErrorResult;
+    fn ContentEditable(&self) -> DOMString;
+    fn SetContentEditable(&mut self, _val: DOMString) -> ErrorResult;
+    fn IsContentEditable(&self) -> bool;
+    fn Spellcheck(&self) -> bool;
+    fn SetSpellcheck(&self, _val: bool) -> ErrorResult;
+    fn GetOffsetParent(&self) -> Option<Unrooted<Element>>;
+    fn OffsetTop(&self) -> i32;
+    fn OffsetLeft(&self) -> i32;
+    fn OffsetWidth(&self) -> i32;
+    fn OffsetHeight(&self) -> i32;
+}
+
+impl<'a> HTMLElementMethods for JSRef<'a, HTMLElement> {
+    fn Title(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetTitle(&mut self, _title: DOMString) {
+    fn SetTitle(&mut self, _title: DOMString) {
     }
 
-    pub fn Lang(&self) -> DOMString {
+    fn Lang(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetLang(&mut self, _lang: DOMString) {
+    fn SetLang(&mut self, _lang: DOMString) {
     }
 
-    pub fn Dir(&self) -> DOMString {
+    fn Dir(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetDir(&mut self, _dir: DOMString) -> ErrorResult {
+    fn SetDir(&mut self, _dir: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetItemValue(&self, _cx: *JSContext) -> Fallible<JSVal> {
+    fn GetItemValue(&self, _cx: *JSContext) -> Fallible<JSVal> {
         Ok(NullValue())
     }
 
-    pub fn SetItemValue(&mut self, _cx: *JSContext, _val: JSVal) -> ErrorResult {
+    fn SetItemValue(&mut self, _cx: *JSContext, _val: JSVal) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Hidden(&self) -> bool {
+    fn Hidden(&self) -> bool {
         false
     }
 
-    pub fn SetHidden(&mut self, _hidden: bool) -> ErrorResult {
+    fn SetHidden(&mut self, _hidden: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Click(&self) {
+    fn Click(&self) {
     }
 
-    pub fn TabIndex(&self) -> i32 {
+    fn TabIndex(&self) -> i32 {
         0
     }
 
-    pub fn SetTabIndex(&mut self, _index: i32) -> ErrorResult {
+    fn SetTabIndex(&mut self, _index: i32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Focus(&self) -> ErrorResult {
+    fn Focus(&self) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Blur(&self) -> ErrorResult {
+    fn Blur(&self) -> ErrorResult {
         Ok(())
     }
 
-    pub fn AccessKey(&self) -> DOMString {
+    fn AccessKey(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAccessKey(&self, _key: DOMString) -> ErrorResult {
+    fn SetAccessKey(&self, _key: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn AccessKeyLabel(&self) -> DOMString {
+    fn AccessKeyLabel(&self) -> DOMString {
         ~""
     }
 
-    pub fn Draggable(&self) -> bool {
+    fn Draggable(&self) -> bool {
         false
     }
 
-    pub fn SetDraggable(&mut self, _draggable: bool) -> ErrorResult {
+    fn SetDraggable(&mut self, _draggable: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn ContentEditable(&self) -> DOMString {
+    fn ContentEditable(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetContentEditable(&mut self, _val: DOMString) -> ErrorResult {
+    fn SetContentEditable(&mut self, _val: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn IsContentEditable(&self) -> bool {
+    fn IsContentEditable(&self) -> bool {
         false
     }
 
-    pub fn Spellcheck(&self) -> bool {
+    fn Spellcheck(&self) -> bool {
         false
     }
 
-    pub fn SetSpellcheck(&self, _val: bool) -> ErrorResult {
+    fn SetSpellcheck(&self, _val: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetOffsetParent(&self) -> Option<Unrooted<Element>> {
+    fn GetOffsetParent(&self) -> Option<Unrooted<Element>> {
         None
     }
 
-    pub fn OffsetTop(&self) -> i32 {
+    fn OffsetTop(&self) -> i32 {
         0
     }
 
-    pub fn OffsetLeft(&self) -> i32 {
+    fn OffsetLeft(&self) -> i32 {
         0
     }
 
-    pub fn OffsetWidth(&self) -> i32 {
+    fn OffsetWidth(&self) -> i32 {
         0
     }
 
-    pub fn OffsetHeight(&self) -> i32 {
+    fn OffsetHeight(&self) -> i32 {
         0
     }
 }
diff --git a/src/components/script/dom/htmlembedelement.rs b/src/components/script/dom/htmlembedelement.rs
index 864e1a1829c..715f113987e 100644
--- a/src/components/script/dom/htmlembedelement.rs
+++ b/src/components/script/dom/htmlembedelement.rs
@@ -40,56 +40,73 @@ impl HTMLEmbedElement {
     }
 }
 
-impl HTMLEmbedElement {
-    pub fn Src(&self) -> DOMString {
+pub trait HTMLEmbedElementMethods {
+    fn Src(&self) -> DOMString;
+    fn SetSrc(&mut self, _src: DOMString) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult;
+    fn Width(&self) -> DOMString;
+    fn SetWidth(&mut self, _width: DOMString) -> ErrorResult;
+    fn Height(&self) -> DOMString;
+    fn SetHeight(&mut self, _height: DOMString) -> ErrorResult;
+    fn Align(&self) -> DOMString;
+    fn SetAlign(&mut self, _type: DOMString) -> ErrorResult;
+    fn Name(&self) -> DOMString;
+    fn SetName(&mut self, _type: DOMString) -> ErrorResult;
+    fn GetSVGDocument(&self) -> Option<Unrooted<Document>>;
+}
+
+impl<'a> HTMLEmbedElementMethods for JSRef<'a, HTMLEmbedElement> {
+    fn Src(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetSrc(&mut self, _src: DOMString) -> ErrorResult {
+    fn SetSrc(&mut self, _src: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetType(&mut self, _type: DOMString) -> ErrorResult {
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Width(&self) -> DOMString {
+    fn Width(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetWidth(&mut self, _width: DOMString) -> ErrorResult {
+    fn SetWidth(&mut self, _width: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Height(&self) -> DOMString {
+    fn Height(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHeight(&mut self, _height: DOMString) -> ErrorResult {
+    fn SetHeight(&mut self, _height: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Align(&self) -> DOMString {
+    fn Align(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlign(&mut self, _type: DOMString) -> ErrorResult {
+    fn SetAlign(&mut self, _type: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Name(&self) -> DOMString {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&mut self, _type: DOMString) -> ErrorResult {
+    fn SetName(&mut self, _type: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetSVGDocument(&self) -> Option<Unrooted<Document>> {
+    fn GetSVGDocument(&self) -> Option<Unrooted<Document>> {
         None
     }
 }
+
diff --git a/src/components/script/dom/htmlfieldsetelement.rs b/src/components/script/dom/htmlfieldsetelement.rs
index 1bb9146e4e7..4f3d06d987c 100644
--- a/src/components/script/dom/htmlfieldsetelement.rs
+++ b/src/components/script/dom/htmlfieldsetelement.rs
@@ -43,33 +43,48 @@ impl HTMLFieldSetElement {
     }
 }
 
-impl HTMLFieldSetElement {
-    pub fn Disabled(&self) -> bool {
+pub trait HTMLFieldSetElementMethods {
+    fn Disabled(&self) -> bool;
+    fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult;
+    fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>>;
+    fn Name(&self) -> DOMString;
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn Elements(&self, abstract_self: &JSRef<HTMLFieldSetElement>) -> Unrooted<HTMLCollection>;
+    fn WillValidate(&self) -> bool;
+    fn Validity(&self) -> Unrooted<ValidityState>;
+    fn ValidationMessage(&self) -> DOMString;
+    fn CheckValidity(&self) -> bool;
+    fn SetCustomValidity(&mut self, _error: DOMString);
+}
+
+impl<'a> HTMLFieldSetElementMethods for JSRef<'a, HTMLFieldSetElement> {
+    fn Disabled(&self) -> bool {
         false
     }
 
-    pub fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult {
+    fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>> {
+    fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>> {
         None
     }
 
-    pub fn Name(&self) -> DOMString {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&mut self, _name: DOMString) -> ErrorResult {
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
     // http://www.whatwg.org/html/#dom-fieldset-elements
-    pub fn Elements(&self, abstract_self: &JSRef<HTMLFieldSetElement>) -> Unrooted<HTMLCollection> {
+    fn Elements(&self, abstract_self: &JSRef<HTMLFieldSetElement>) -> Unrooted<HTMLCollection> {
         struct ElementsFilter;
         impl CollectionFilter for ElementsFilter {
             fn filter(&self, elem: &JSRef<Element>, root: &JSRef<Node>) -> bool {
@@ -86,25 +101,26 @@ impl HTMLFieldSetElement {
         HTMLCollection::create(&*window, node, filter)
     }
 
-    pub fn WillValidate(&self) -> bool {
+    fn WillValidate(&self) -> bool {
         false
     }
 
-    pub fn Validity(&self) -> Unrooted<ValidityState> {
+    fn Validity(&self) -> Unrooted<ValidityState> {
         let roots = RootCollection::new();
         let doc = self.htmlelement.element.node.owner_doc().root(&roots);
         let window = doc.deref().window.root(&roots);
         ValidityState::new(&*window)
     }
 
-    pub fn ValidationMessage(&self) -> DOMString {
+    fn ValidationMessage(&self) -> DOMString {
         ~""
     }
 
-    pub fn CheckValidity(&self) -> bool {
+    fn CheckValidity(&self) -> bool {
         false
     }
 
-    pub fn SetCustomValidity(&mut self, _error: DOMString) {
+    fn SetCustomValidity(&mut self, _error: DOMString) {
     }
 }
+
diff --git a/src/components/script/dom/htmlfontelement.rs b/src/components/script/dom/htmlfontelement.rs
index fefc9c0f4df..eca6b946b23 100644
--- a/src/components/script/dom/htmlfontelement.rs
+++ b/src/components/script/dom/htmlfontelement.rs
@@ -40,28 +40,38 @@ impl HTMLFontElement {
     }
 }
 
-impl HTMLFontElement {
-    pub fn Color(&self) -> DOMString {
+pub trait HTMLFontElementMethods {
+    fn Color(&self) -> DOMString;
+    fn SetColor(&mut self, _color: DOMString) -> ErrorResult;
+    fn Face(&self) -> DOMString;
+    fn SetFace(&mut self, _face: DOMString) -> ErrorResult;
+    fn Size(&self) -> DOMString;
+    fn SetSize(&mut self, _size: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLFontElementMethods for JSRef<'a, HTMLFontElement> {
+    fn Color(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetColor(&mut self, _color: DOMString) -> ErrorResult {
+    fn SetColor(&mut self, _color: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Face(&self) -> DOMString {
+    fn Face(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetFace(&mut self, _face: DOMString) -> ErrorResult {
+    fn SetFace(&mut self, _face: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Size(&self) -> DOMString {
+    fn Size(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetSize(&mut self, _size: DOMString) -> ErrorResult {
+    fn SetSize(&mut self, _size: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlformelement.rs b/src/components/script/dom/htmlformelement.rs
index 329b9e07baf..f045c1437c3 100644
--- a/src/components/script/dom/htmlformelement.rs
+++ b/src/components/script/dom/htmlformelement.rs
@@ -41,80 +41,107 @@ impl HTMLFormElement {
     }
 }
 
-impl HTMLFormElement {
-    pub fn AcceptCharset(&self) -> DOMString {
+pub trait HTMLFormElementMethods {
+    fn AcceptCharset(&self) -> DOMString;
+    fn SetAcceptCharset(&mut self, _accept_charset: DOMString) -> ErrorResult;
+    fn Action(&self) -> DOMString;
+    fn SetAction(&mut self, _action: DOMString) -> ErrorResult;
+    fn Autocomplete(&self) -> DOMString;
+    fn SetAutocomplete(&mut self, _autocomplete: DOMString) -> ErrorResult;
+    fn Enctype(&self) -> DOMString;
+    fn SetEnctype(&mut self, _enctype: DOMString) -> ErrorResult;
+    fn Encoding(&self) -> DOMString;
+    fn SetEncoding(&mut self, _encoding: DOMString) -> ErrorResult;
+    fn Method(&self) -> DOMString;
+    fn SetMethod(&mut self, _method: DOMString) -> ErrorResult;
+    fn Name(&self) -> DOMString;
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult;
+    fn NoValidate(&self) -> bool;
+    fn SetNoValidate(&mut self, _no_validate: bool) -> ErrorResult;
+    fn Target(&self) -> DOMString;
+    fn SetTarget(&mut self, _target: DOMString) -> ErrorResult;
+    fn Elements(&self) -> Unrooted<HTMLCollection>;
+    fn Length(&self) -> i32;
+    fn Submit(&self) -> ErrorResult;
+    fn Reset(&self);
+    fn CheckValidity(&self) -> bool;
+    fn IndexedGetter(&self, _index: u32, _found: &mut bool) -> Unrooted<Element>;
+}
+
+impl<'a> HTMLFormElementMethods for JSRef<'a, HTMLFormElement> {
+    fn AcceptCharset(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAcceptCharset(&mut self, _accept_charset: DOMString) -> ErrorResult {
+    fn SetAcceptCharset(&mut self, _accept_charset: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Action(&self) -> DOMString {
+    fn Action(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAction(&mut self, _action: DOMString) -> ErrorResult {
+    fn SetAction(&mut self, _action: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Autocomplete(&self) -> DOMString {
+    fn Autocomplete(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAutocomplete(&mut self, _autocomplete: DOMString) -> ErrorResult {
+    fn SetAutocomplete(&mut self, _autocomplete: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Enctype(&self) -> DOMString {
+    fn Enctype(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetEnctype(&mut self, _enctype: DOMString) -> ErrorResult {
+    fn SetEnctype(&mut self, _enctype: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Encoding(&self) -> DOMString {
+    fn Encoding(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetEncoding(&mut self, _encoding: DOMString) -> ErrorResult {
+    fn SetEncoding(&mut self, _encoding: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Method(&self) -> DOMString {
+    fn Method(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetMethod(&mut self, _method: DOMString) -> ErrorResult {
+    fn SetMethod(&mut self, _method: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Name(&self) -> DOMString {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&mut self, _name: DOMString) -> ErrorResult {
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn NoValidate(&self) -> bool {
+    fn NoValidate(&self) -> bool {
         false
     }
 
-    pub fn SetNoValidate(&mut self, _no_validate: bool) -> ErrorResult {
+    fn SetNoValidate(&mut self, _no_validate: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Target(&self) -> DOMString {
+    fn Target(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetTarget(&mut self, _target: DOMString) -> ErrorResult {
+    fn SetTarget(&mut self, _target: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Elements(&self) -> Unrooted<HTMLCollection> {
+    fn Elements(&self) -> Unrooted<HTMLCollection> {
         // FIXME: https://github.com/mozilla/servo/issues/1844
         let roots = RootCollection::new();
         let doc = self.htmlelement.element.node.owner_doc().root(&roots);
@@ -122,22 +149,23 @@ impl HTMLFormElement {
         HTMLCollection::new(&*window, Static(vec!()))
     }
 
-    pub fn Length(&self) -> i32 {
+    fn Length(&self) -> i32 {
         0
     }
 
-    pub fn Submit(&self) -> ErrorResult {
+    fn Submit(&self) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Reset(&self) {
+    fn Reset(&self) {
     }
 
-    pub fn CheckValidity(&self) -> bool {
+    fn CheckValidity(&self) -> bool {
         false
     }
 
-    pub fn IndexedGetter(&self, _index: u32, _found: &mut bool) -> Unrooted<Element> {
+    fn IndexedGetter(&self, _index: u32, _found: &mut bool) -> Unrooted<Element> {
         fail!("Not implemented.")
     }
 }
+
diff --git a/src/components/script/dom/htmlframeelement.rs b/src/components/script/dom/htmlframeelement.rs
index 180124bf6dd..5dd705b494f 100644
--- a/src/components/script/dom/htmlframeelement.rs
+++ b/src/components/script/dom/htmlframeelement.rs
@@ -41,76 +41,98 @@ impl HTMLFrameElement {
     }
 }
 
-impl HTMLFrameElement {
-    pub fn Name(&self) -> DOMString {
+pub trait HTMLFrameElementMethods {
+    fn Name(&self) -> DOMString;
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult;
+    fn Scrolling(&self) -> DOMString;
+    fn SetScrolling(&mut self, _scrolling: DOMString) -> ErrorResult;
+    fn Src(&self) -> DOMString;
+    fn SetSrc(&mut self, _src: DOMString) -> ErrorResult;
+    fn FrameBorder(&self) -> DOMString;
+    fn SetFrameBorder(&mut self, _frameborder: DOMString) -> ErrorResult;
+    fn LongDesc(&self) -> DOMString;
+    fn SetLongDesc(&mut self, _longdesc: DOMString) -> ErrorResult;
+    fn NoResize(&self) -> bool;
+    fn SetNoResize(&mut self, _no_resize: bool) -> ErrorResult;
+    fn GetContentDocument(&self) -> Option<Unrooted<Document>>;
+    fn GetContentWindow(&self) -> Option<Unrooted<Window>>;
+    fn MarginHeight(&self) -> DOMString;
+    fn SetMarginHeight(&mut self, _height: DOMString) -> ErrorResult;
+    fn MarginWidth(&self) -> DOMString;
+    fn SetMarginWidth(&mut self, _height: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLFrameElementMethods for JSRef<'a, HTMLFrameElement> {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&mut self, _name: DOMString) -> ErrorResult {
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Scrolling(&self) -> DOMString {
+    fn Scrolling(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetScrolling(&mut self, _scrolling: DOMString) -> ErrorResult {
+    fn SetScrolling(&mut self, _scrolling: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Src(&self) -> DOMString {
+    fn Src(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetSrc(&mut self, _src: DOMString) -> ErrorResult {
+    fn SetSrc(&mut self, _src: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn FrameBorder(&self) -> DOMString {
+    fn FrameBorder(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetFrameBorder(&mut self, _frameborder: DOMString) -> ErrorResult {
+    fn SetFrameBorder(&mut self, _frameborder: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn LongDesc(&self) -> DOMString {
+    fn LongDesc(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetLongDesc(&mut self, _longdesc: DOMString) -> ErrorResult {
+    fn SetLongDesc(&mut self, _longdesc: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn NoResize(&self) -> bool {
+    fn NoResize(&self) -> bool {
         false
     }
 
-    pub fn SetNoResize(&mut self, _no_resize: bool) -> ErrorResult {
+    fn SetNoResize(&mut self, _no_resize: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetContentDocument(&self) -> Option<Unrooted<Document>> {
+    fn GetContentDocument(&self) -> Option<Unrooted<Document>> {
         None
     }
 
-    pub fn GetContentWindow(&self) -> Option<Unrooted<Window>> {
+    fn GetContentWindow(&self) -> Option<Unrooted<Window>> {
         None
     }
 
-    pub fn MarginHeight(&self) -> DOMString {
+    fn MarginHeight(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetMarginHeight(&mut self, _height: DOMString) -> ErrorResult {
+    fn SetMarginHeight(&mut self, _height: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn MarginWidth(&self) -> DOMString {
+    fn MarginWidth(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetMarginWidth(&mut self, _height: DOMString) -> ErrorResult {
+    fn SetMarginWidth(&mut self, _height: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlframesetelement.rs b/src/components/script/dom/htmlframesetelement.rs
index 9177c197ae8..1e58cba197a 100644
--- a/src/components/script/dom/htmlframesetelement.rs
+++ b/src/components/script/dom/htmlframesetelement.rs
@@ -40,20 +40,28 @@ impl HTMLFrameSetElement {
     }
 }
 
-impl HTMLFrameSetElement {
-    pub fn Cols(&self) -> DOMString {
+pub trait HTMLFrameSetElementMethods {
+    fn Cols(&self) -> DOMString;
+    fn SetCols(&mut self, _cols: DOMString) -> ErrorResult;
+    fn Rows(&self) -> DOMString;
+    fn SetRows(&mut self, _rows: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLFrameSetElementMethods for JSRef<'a, HTMLFrameSetElement> {
+    fn Cols(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCols(&mut self, _cols: DOMString) -> ErrorResult {
+    fn SetCols(&mut self, _cols: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Rows(&self) -> DOMString {
+    fn Rows(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetRows(&mut self, _rows: DOMString) -> ErrorResult {
+    fn SetRows(&mut self, _rows: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlheadelement.rs b/src/components/script/dom/htmlheadelement.rs
index 6b10c6078c3..440a95310f6 100644
--- a/src/components/script/dom/htmlheadelement.rs
+++ b/src/components/script/dom/htmlheadelement.rs
@@ -38,3 +38,6 @@ impl HTMLHeadElement {
         Node::reflect_node(~element, document, HTMLHeadElementBinding::Wrap)
     }
 }
+
+pub trait HTMLHeadElementMethods {
+}
diff --git a/src/components/script/dom/htmlheadingelement.rs b/src/components/script/dom/htmlheadingelement.rs
index 4574189d7bf..f05ef59a211 100644
--- a/src/components/script/dom/htmlheadingelement.rs
+++ b/src/components/script/dom/htmlheadingelement.rs
@@ -51,11 +51,17 @@ impl HTMLHeadingElement {
     }
 }
 
-impl HTMLHeadingElement {
-    pub fn Align(&self) -> DOMString {
+pub trait HTMLHeadingElementMethods {
+    fn Align(&self) -> DOMString;
+    fn SetAlign(&mut self, _align: DOMString);
+}
+
+impl<'a> HTMLHeadingElementMethods for JSRef<'a, HTMLHeadingElement> {
+    fn Align(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlign(&mut self, _align: DOMString) {
+    fn SetAlign(&mut self, _align: DOMString) {
     }
 }
+
diff --git a/src/components/script/dom/htmlhrelement.rs b/src/components/script/dom/htmlhrelement.rs
index 14098388c1d..2ad58999b61 100644
--- a/src/components/script/dom/htmlhrelement.rs
+++ b/src/components/script/dom/htmlhrelement.rs
@@ -40,44 +40,58 @@ impl HTMLHRElement {
     }
 }
 
-impl HTMLHRElement {
-    pub fn Align(&self) -> DOMString {
+pub trait HTMLHRElementMethods {
+    fn Align(&self) -> DOMString;
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult;
+    fn Color(&self) -> DOMString;
+    fn SetColor(&mut self, _color: DOMString) -> ErrorResult;
+    fn NoShade(&self) -> bool;
+    fn SetNoShade(&self, _no_shade: bool) -> ErrorResult;
+    fn Size(&self) -> DOMString;
+    fn SetSize(&mut self, _size: DOMString) -> ErrorResult;
+    fn Width(&self) -> DOMString;
+    fn SetWidth(&mut self, _width: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLHRElementMethods for JSRef<'a, HTMLHRElement> {
+    fn Align(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Color(&self) -> DOMString {
+    fn Color(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetColor(&mut self, _color: DOMString) -> ErrorResult {
+    fn SetColor(&mut self, _color: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn NoShade(&self) -> bool {
+    fn NoShade(&self) -> bool {
         false
     }
 
-    pub fn SetNoShade(&self, _no_shade: bool) -> ErrorResult {
+    fn SetNoShade(&self, _no_shade: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Size(&self) -> DOMString {
+    fn Size(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetSize(&mut self, _size: DOMString) -> ErrorResult {
+    fn SetSize(&mut self, _size: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Width(&self) -> DOMString {
+    fn Width(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetWidth(&mut self, _width: DOMString) -> ErrorResult {
+    fn SetWidth(&mut self, _width: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlhtmlelement.rs b/src/components/script/dom/htmlhtmlelement.rs
index 1930ce271c2..e30968f91f4 100644
--- a/src/components/script/dom/htmlhtmlelement.rs
+++ b/src/components/script/dom/htmlhtmlelement.rs
@@ -40,12 +40,18 @@ impl HTMLHtmlElement {
     }
 }
 
-impl HTMLHtmlElement {
-    pub fn Version(&self) -> DOMString {
+pub trait HTMLHtmlElementMethods {
+    fn Version(&self) -> DOMString;
+    fn SetVersion(&mut self, _version: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLHtmlElementMethods for JSRef<'a, HTMLHtmlElement> {
+    fn Version(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetVersion(&mut self, _version: DOMString) -> ErrorResult {
+    fn SetVersion(&mut self, _version: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmliframeelement.rs b/src/components/script/dom/htmliframeelement.rs
index c157e2ad445..316468342f1 100644
--- a/src/components/script/dom/htmliframeelement.rs
+++ b/src/components/script/dom/htmliframeelement.rs
@@ -80,122 +80,154 @@ impl HTMLIFrameElement {
     }
 }
 
-impl HTMLIFrameElement {
-    pub fn Src(&self) -> DOMString {
+pub trait HTMLIFrameElementMethods {
+    fn Src(&self) -> DOMString;
+    fn SetSrc(&mut self, _src: DOMString) -> ErrorResult;
+    fn Srcdoc(&self) -> DOMString;
+    fn SetSrcdoc(&mut self, _srcdoc: DOMString) -> ErrorResult;
+    fn Name(&self) -> DOMString;
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult;
+    fn Sandbox(&self, abstract_self: &JSRef<HTMLIFrameElement>) -> DOMString;
+    fn SetSandbox(&mut self, abstract_self: &mut JSRef<HTMLIFrameElement>, sandbox: DOMString);
+    fn AllowFullscreen(&self) -> bool;
+    fn SetAllowFullscreen(&mut self, _allow: bool) -> ErrorResult;
+    fn Width(&self) -> DOMString;
+    fn SetWidth(&mut self, _width: DOMString) -> ErrorResult;
+    fn Height(&self) -> DOMString;
+    fn SetHeight(&mut self, _height: DOMString) -> ErrorResult;
+    fn GetContentDocument(&self) -> Option<Unrooted<Document>>;
+    fn GetContentWindow(&self) -> Option<Unrooted<Window>>;
+    fn Align(&self) -> DOMString;
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult;
+    fn Scrolling(&self) -> DOMString;
+    fn SetScrolling(&mut self, _scrolling: DOMString) -> ErrorResult;
+    fn FrameBorder(&self) -> DOMString;
+    fn SetFrameBorder(&mut self, _frameborder: DOMString) -> ErrorResult;
+    fn LongDesc(&self) -> DOMString;
+    fn SetLongDesc(&mut self, _longdesc: DOMString) -> ErrorResult;
+    fn MarginHeight(&self) -> DOMString;
+    fn SetMarginHeight(&mut self, _marginheight: DOMString) -> ErrorResult;
+    fn MarginWidth(&self) -> DOMString;
+    fn SetMarginWidth(&mut self, _marginwidth: DOMString) -> ErrorResult;
+    fn GetSVGDocument(&self) -> Option<Unrooted<Document>>;
+}
+
+impl<'a> HTMLIFrameElementMethods for JSRef<'a, HTMLIFrameElement> {
+    fn Src(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetSrc(&mut self, _src: DOMString) -> ErrorResult {
+    fn SetSrc(&mut self, _src: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Srcdoc(&self) -> DOMString {
+    fn Srcdoc(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetSrcdoc(&mut self, _srcdoc: DOMString) -> ErrorResult {
+    fn SetSrcdoc(&mut self, _srcdoc: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Name(&self) -> DOMString {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&mut self, _name: DOMString) -> ErrorResult {
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Sandbox(&self, abstract_self: &JSRef<HTMLIFrameElement>) -> DOMString {
+    fn Sandbox(&self, abstract_self: &JSRef<HTMLIFrameElement>) -> DOMString {
         let element: &JSRef<Element> = ElementCast::from_ref(abstract_self);
         element.get_string_attribute("sandbox")
     }
 
-    pub fn SetSandbox(&mut self, abstract_self: &mut JSRef<HTMLIFrameElement>, sandbox: DOMString) {
+    fn SetSandbox(&mut self, abstract_self: &mut JSRef<HTMLIFrameElement>, sandbox: DOMString) {
         let element: &mut JSRef<Element> = ElementCast::from_mut_ref(abstract_self);
         element.set_string_attribute("sandbox", sandbox);
     }
 
-    pub fn AllowFullscreen(&self) -> bool {
+    fn AllowFullscreen(&self) -> bool {
         false
     }
 
-    pub fn SetAllowFullscreen(&mut self, _allow: bool) -> ErrorResult {
+    fn SetAllowFullscreen(&mut self, _allow: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Width(&self) -> DOMString {
+    fn Width(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetWidth(&mut self, _width: DOMString) -> ErrorResult {
+    fn SetWidth(&mut self, _width: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Height(&self) -> DOMString {
+    fn Height(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHeight(&mut self, _height: DOMString) -> ErrorResult {
+    fn SetHeight(&mut self, _height: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetContentDocument(&self) -> Option<Unrooted<Document>> {
+    fn GetContentDocument(&self) -> Option<Unrooted<Document>> {
         None
     }
 
-    pub fn GetContentWindow(&self) -> Option<Unrooted<Window>> {
+    fn GetContentWindow(&self) -> Option<Unrooted<Window>> {
         None
     }
 
-    pub fn Align(&self) -> DOMString {
+    fn Align(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Scrolling(&self) -> DOMString {
+    fn Scrolling(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetScrolling(&mut self, _scrolling: DOMString) -> ErrorResult {
+    fn SetScrolling(&mut self, _scrolling: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn FrameBorder(&self) -> DOMString {
+    fn FrameBorder(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetFrameBorder(&mut self, _frameborder: DOMString) -> ErrorResult {
+    fn SetFrameBorder(&mut self, _frameborder: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn LongDesc(&self) -> DOMString {
+    fn LongDesc(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetLongDesc(&mut self, _longdesc: DOMString) -> ErrorResult {
+    fn SetLongDesc(&mut self, _longdesc: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn MarginHeight(&self) -> DOMString {
+    fn MarginHeight(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetMarginHeight(&mut self, _marginheight: DOMString) -> ErrorResult {
+    fn SetMarginHeight(&mut self, _marginheight: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn MarginWidth(&self) -> DOMString {
+    fn MarginWidth(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetMarginWidth(&mut self, _marginwidth: DOMString) -> ErrorResult {
+    fn SetMarginWidth(&mut self, _marginwidth: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetSVGDocument(&self) -> Option<Unrooted<Document>> {
+    fn GetSVGDocument(&self) -> Option<Unrooted<Document>> {
         None
     }
 }
diff --git a/src/components/script/dom/htmlimageelement.rs b/src/components/script/dom/htmlimageelement.rs
index 04528c54283..efe6a0401d6 100644
--- a/src/components/script/dom/htmlimageelement.rs
+++ b/src/components/script/dom/htmlimageelement.rs
@@ -47,9 +47,7 @@ impl HTMLImageElement {
         let element = HTMLImageElement::new_inherited(localName, document.unrooted());
         Node::reflect_node(~element, document, HTMLImageElementBinding::Wrap)
     }
-}
 
-impl HTMLImageElement {
     pub fn image<'a>(&'a self) -> &'a Option<Url> {
         &*self.image
     }
@@ -79,145 +77,179 @@ impl HTMLImageElement {
             }
         }
     }
+}
 
-    pub fn Alt(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString {
+pub trait HTMLImageElementMethods {
+    fn Alt(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString;
+    fn SetAlt(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, alt: DOMString);
+    fn Src(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString;
+    fn SetSrc(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, src: DOMString);
+    fn CrossOrigin(&self) -> DOMString;
+    fn SetCrossOrigin(&mut self, _cross_origin: DOMString) -> ErrorResult;
+    fn UseMap(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString;
+    fn SetUseMap(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, use_map: DOMString);
+    fn IsMap(&self, abstract_self: &JSRef<HTMLImageElement>) -> bool;
+    fn SetIsMap(&self, abstract_self: &mut JSRef<HTMLImageElement>, is_map: bool);
+    fn Width(&self, abstract_self: &JSRef<HTMLImageElement>) -> u32;
+    fn SetWidth(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, width: u32);
+    fn Height(&self, abstract_self: &JSRef<HTMLImageElement>) -> u32;
+    fn SetHeight(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, height: u32);
+    fn NaturalWidth(&self) -> u32;
+    fn NaturalHeight(&self) -> u32;
+    fn Complete(&self) -> bool;
+    fn Name(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString;
+    fn SetName(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, name: DOMString);
+    fn Align(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString;
+    fn SetAlign(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, align: DOMString);
+    fn Hspace(&self, abstract_self: &JSRef<HTMLImageElement>) -> u32;
+    fn SetHspace(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, hspace: u32);
+    fn Vspace(&self, abstract_self: &JSRef<HTMLImageElement>) -> u32;
+    fn SetVspace(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, vspace: u32);
+    fn LongDesc(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString;
+    fn SetLongDesc(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, longdesc: DOMString);
+    fn Border(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString;
+    fn SetBorder(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, border: DOMString);
+}
+
+impl<'a> HTMLImageElementMethods for JSRef<'a, HTMLImageElement> {
+    fn Alt(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString {
         let element: &JSRef<Element> = ElementCast::from_ref(abstract_self);
         element.get_string_attribute("alt")
     }
 
-    pub fn SetAlt(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, alt: DOMString) {
+    fn SetAlt(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, alt: DOMString) {
         let element: &mut JSRef<Element> = ElementCast::from_mut_ref(abstract_self);
         element.set_string_attribute("alt", alt)
     }
 
-    pub fn Src(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString {
+    fn Src(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString {
         let element: &JSRef<Element> = ElementCast::from_ref(abstract_self);
         element.get_string_attribute("src")
     }
 
-    pub fn SetSrc(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, src: DOMString) {
+    fn SetSrc(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, src: DOMString) {
         let element: &mut JSRef<Element> = ElementCast::from_mut_ref(abstract_self);
         element.set_url_attribute("src", src)
     }
 
-    pub fn CrossOrigin(&self) -> DOMString {
+    fn CrossOrigin(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCrossOrigin(&mut self, _cross_origin: DOMString) -> ErrorResult {
+    fn SetCrossOrigin(&mut self, _cross_origin: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn UseMap(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString {
+    fn UseMap(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString {
         let element: &JSRef<Element> = ElementCast::from_ref(abstract_self);
         element.get_string_attribute("useMap")
     }
 
-    pub fn SetUseMap(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, use_map: DOMString) {
+    fn SetUseMap(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, use_map: DOMString) {
         let element: &mut JSRef<Element> = ElementCast::from_mut_ref(abstract_self);
         element.set_string_attribute("useMap", use_map)
     }
 
-    pub fn IsMap(&self, abstract_self: &JSRef<HTMLImageElement>) -> bool {
+    fn IsMap(&self, abstract_self: &JSRef<HTMLImageElement>) -> bool {
         let element: &JSRef<Element> = ElementCast::from_ref(abstract_self);
         from_str::<bool>(element.get_string_attribute("hspace")).unwrap()
     }
 
-    pub fn SetIsMap(&self, abstract_self: &mut JSRef<HTMLImageElement>, is_map: bool) {
+    fn SetIsMap(&self, abstract_self: &mut JSRef<HTMLImageElement>, is_map: bool) {
         let element: &mut JSRef<Element> = ElementCast::from_mut_ref(abstract_self);
         element.set_string_attribute("isMap", is_map.to_str())
     }
 
-    pub fn Width(&self, abstract_self: &JSRef<HTMLImageElement>) -> u32 {
+    fn Width(&self, abstract_self: &JSRef<HTMLImageElement>) -> u32 {
         let node: &JSRef<Node> = NodeCast::from_ref(abstract_self);
         let rect = node.get_bounding_content_box();
         to_px(rect.size.width) as u32
     }
 
-    pub fn SetWidth(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, width: u32) {
+    fn SetWidth(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, width: u32) {
         let elem: &mut JSRef<Element> = ElementCast::from_mut_ref(abstract_self);
         elem.set_uint_attribute("width", width)
     }
 
-    pub fn Height(&self, abstract_self: &JSRef<HTMLImageElement>) -> u32 {
+    fn Height(&self, abstract_self: &JSRef<HTMLImageElement>) -> u32 {
         let node: &JSRef<Node> = NodeCast::from_ref(abstract_self);
         let rect = node.get_bounding_content_box();
         to_px(rect.size.height) as u32
     }
 
-    pub fn SetHeight(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, height: u32) {
+    fn SetHeight(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, height: u32) {
         let elem: &mut JSRef<Element> = ElementCast::from_mut_ref(abstract_self);
         elem.set_uint_attribute("height", height)
     }
 
-    pub fn NaturalWidth(&self) -> u32 {
+    fn NaturalWidth(&self) -> u32 {
         0
     }
 
-    pub fn NaturalHeight(&self) -> u32 {
+    fn NaturalHeight(&self) -> u32 {
         0
     }
 
-    pub fn Complete(&self) -> bool {
+    fn Complete(&self) -> bool {
         false
     }
 
-    pub fn Name(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString {
+    fn Name(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString {
         let element: &JSRef<Element> = ElementCast::from_ref(abstract_self);
         element.get_string_attribute("name")
     }
 
-    pub fn SetName(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, name: DOMString) {
+    fn SetName(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, name: DOMString) {
         let element: &mut JSRef<Element> = ElementCast::from_mut_ref(abstract_self);
         element.set_string_attribute("name", name)
     }
 
-    pub fn Align(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString {
+    fn Align(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString {
         let element: &JSRef<Element> = ElementCast::from_ref(abstract_self);
         element.get_string_attribute("longdesc")
     }
 
-    pub fn SetAlign(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, align: DOMString) {
+    fn SetAlign(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, align: DOMString) {
         let element: &mut JSRef<Element> = ElementCast::from_mut_ref(abstract_self);
         element.set_string_attribute("align", align)
     }
 
-    pub fn Hspace(&self, abstract_self: &JSRef<HTMLImageElement>) -> u32 {
+    fn Hspace(&self, abstract_self: &JSRef<HTMLImageElement>) -> u32 {
         let element: &JSRef<Element> = ElementCast::from_ref(abstract_self);
         from_str::<u32>(element.get_string_attribute("hspace")).unwrap()
     }
 
-    pub fn SetHspace(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, hspace: u32) {
+    fn SetHspace(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, hspace: u32) {
         let element: &mut JSRef<Element> = ElementCast::from_mut_ref(abstract_self);
         element.set_uint_attribute("hspace", hspace)
     }
 
-    pub fn Vspace(&self, abstract_self: &JSRef<HTMLImageElement>) -> u32 {
+    fn Vspace(&self, abstract_self: &JSRef<HTMLImageElement>) -> u32 {
         let element: &JSRef<Element> = ElementCast::from_ref(abstract_self);
         from_str::<u32>(element.get_string_attribute("vspace")).unwrap()
     }
 
-    pub fn SetVspace(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, vspace: u32) {
+    fn SetVspace(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, vspace: u32) {
         let element: &mut JSRef<Element> = ElementCast::from_mut_ref(abstract_self);
         element.set_uint_attribute("vspace", vspace)
     }
 
-    pub fn LongDesc(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString {
+    fn LongDesc(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString {
         let element: &JSRef<Element> = ElementCast::from_ref(abstract_self);
         element.get_string_attribute("longdesc")
     }
 
-    pub fn SetLongDesc(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, longdesc: DOMString) {
+    fn SetLongDesc(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, longdesc: DOMString) {
         let element: &mut JSRef<Element> = ElementCast::from_mut_ref(abstract_self);
         element.set_string_attribute("longdesc", longdesc)
     }
 
-    pub fn Border(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString {
+    fn Border(&self, abstract_self: &JSRef<HTMLImageElement>) -> DOMString {
         let element: &JSRef<Element> = ElementCast::from_ref(abstract_self);
         element.get_string_attribute("border")
     }
 
-    pub fn SetBorder(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, border: DOMString) {
+    fn SetBorder(&mut self, abstract_self: &mut JSRef<HTMLImageElement>, border: DOMString) {
         let element: &mut JSRef<Element> = ElementCast::from_mut_ref(abstract_self);
         element.set_string_attribute("border", border)
     }
diff --git a/src/components/script/dom/htmlinputelement.rs b/src/components/script/dom/htmlinputelement.rs
index 55d8fc7c1a7..f56578c6cdd 100644
--- a/src/components/script/dom/htmlinputelement.rs
+++ b/src/components/script/dom/htmlinputelement.rs
@@ -40,310 +40,392 @@ impl HTMLInputElement {
     }
 }
 
-impl HTMLInputElement {
-    pub fn Accept(&self) -> DOMString {
+pub trait HTMLInputElementMethods {
+    fn Accept(&self) -> DOMString;
+    fn SetAccept(&mut self, _accept: DOMString) -> ErrorResult;
+    fn Alt(&self) -> DOMString;
+    fn SetAlt(&mut self, _alt: DOMString) -> ErrorResult;
+    fn Autocomplete(&self) -> DOMString;
+    fn SetAutocomplete(&mut self, _autocomple: DOMString) -> ErrorResult;
+    fn Autofocus(&self) -> bool;
+    fn SetAutofocus(&mut self, _autofocus: bool) -> ErrorResult;
+    fn DefaultChecked(&self) -> bool;
+    fn SetDefaultChecked(&mut self, _default_checked: bool) -> ErrorResult;
+    fn Checked(&self) -> bool;
+    fn SetChecked(&mut self, _checked: bool);
+    fn Disabled(&self) -> bool;
+    fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult;
+    fn FormAction(&self) -> DOMString;
+    fn SetFormAction(&mut self, _form_action: DOMString) -> ErrorResult;
+    fn FormEnctype(&self) -> DOMString;
+    fn SetFormEnctype(&mut self, _form_enctype: DOMString) -> ErrorResult;
+    fn FormMethod(&self) -> DOMString;
+    fn SetFormMethod(&mut self, _form_method: DOMString) -> ErrorResult;
+    fn FormNoValidate(&self) -> bool;
+    fn SetFormNoValidate(&mut self, _form_no_validate: bool) -> ErrorResult;
+    fn FormTarget(&self) -> DOMString;
+    fn SetFormTarget(&mut self, _form_target: DOMString) -> ErrorResult;
+    fn Height(&self) -> u32;
+    fn SetHeight(&mut self, _height: u32) -> ErrorResult;
+    fn Indeterminate(&self) -> bool;
+    fn SetIndeterminate(&mut self, _indeterminate: bool);
+    fn InputMode(&self) -> DOMString;
+    fn SetInputMode(&mut self, _input_mode: DOMString) -> ErrorResult;
+    fn Max(&self) -> DOMString;
+    fn SetMax(&mut self, _max: DOMString) -> ErrorResult;
+    fn MaxLength(&self) -> i32;
+    fn SetMaxLength(&mut self, _max_length: i32) -> ErrorResult;
+    fn Min(&self) -> DOMString;
+    fn SetMin(&mut self, _min: DOMString) -> ErrorResult;
+    fn Multiple(&self) -> bool;
+    fn SetMultiple(&mut self, _multiple: bool) -> ErrorResult;
+    fn Name(&self) -> DOMString;
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult;
+    fn Pattern(&self) -> DOMString;
+    fn SetPattern(&mut self, _pattern: DOMString) -> ErrorResult;
+    fn Placeholder(&self) -> DOMString;
+    fn SetPlaceholder(&mut self, _placeholder: DOMString) -> ErrorResult;
+    fn ReadOnly(&self) -> bool;
+    fn SetReadOnly(&mut self, _read_only: bool) -> ErrorResult;
+    fn Required(&self) -> bool;
+    fn SetRequired(&mut self, _required: bool) -> ErrorResult;
+    fn Size(&self) -> u32;
+    fn SetSize(&mut self, _size: u32) -> ErrorResult;
+    fn Src(&self) -> DOMString;
+    fn SetSrc(&mut self, _src: DOMString) -> ErrorResult;
+    fn Step(&self) -> DOMString;
+    fn SetStep(&mut self, _step: DOMString) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult;
+    fn DefaultValue(&self) -> DOMString;
+    fn SetDefaultValue(&mut self, _default_value: DOMString) -> ErrorResult;
+    fn Value(&self) -> DOMString;
+    fn SetValue(&mut self, _value: DOMString) -> ErrorResult;
+    fn Width(&self) -> u32;
+    fn SetWidth(&mut self, _width: u32);
+    fn WillValidate(&self) -> bool;
+    fn SetWillValidate(&self, _will_validate: bool);
+    fn GetValidationMessage(&self) -> Fallible<DOMString>;
+    fn CheckValidity(&self) -> bool;
+    fn SetCustomValidity(&self, _error: DOMString);
+    fn Select(&self);
+    fn GetSelectionStart(&self) -> Fallible<i32>;
+    fn SetSelectionStart(&mut self, _selection_start: i32) -> ErrorResult;
+    fn GetSelectionEnd(&self) -> Fallible<i32>;
+    fn SetSelectionEnd(&mut self, _selection_end: i32) -> ErrorResult;
+    fn GetSelectionDirection(&self) -> Fallible<DOMString>;
+    fn SetSelectionDirection(&mut self, _selection_direction: DOMString) -> ErrorResult;
+    fn Align(&self) -> DOMString;
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult;
+    fn UseMap(&self) -> DOMString;
+    fn SetUseMap(&mut self, _align: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLInputElementMethods for JSRef<'a, HTMLInputElement> {
+    fn Accept(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAccept(&mut self, _accept: DOMString) -> ErrorResult {
+    fn SetAccept(&mut self, _accept: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Alt(&self) -> DOMString {
+    fn Alt(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlt(&mut self, _alt: DOMString) -> ErrorResult {
+    fn SetAlt(&mut self, _alt: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Autocomplete(&self) -> DOMString {
+    fn Autocomplete(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAutocomplete(&mut self, _autocomple: DOMString) -> ErrorResult {
+    fn SetAutocomplete(&mut self, _autocomple: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Autofocus(&self) -> bool {
+    fn Autofocus(&self) -> bool {
         false
     }
 
-    pub fn SetAutofocus(&mut self, _autofocus: bool) -> ErrorResult {
+    fn SetAutofocus(&mut self, _autofocus: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn DefaultChecked(&self) -> bool {
+    fn DefaultChecked(&self) -> bool {
         false
     }
 
-    pub fn SetDefaultChecked(&mut self, _default_checked: bool) -> ErrorResult {
+    fn SetDefaultChecked(&mut self, _default_checked: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Checked(&self) -> bool {
+    fn Checked(&self) -> bool {
         false
     }
 
-    pub fn SetChecked(&mut self, _checked: bool) {
+    fn SetChecked(&mut self, _checked: bool) {
     }
 
-    pub fn Disabled(&self) -> bool {
+    fn Disabled(&self) -> bool {
         false
     }
 
-    pub fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult {
+    fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn FormAction(&self) -> DOMString {
+    fn FormAction(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetFormAction(&mut self, _form_action: DOMString) -> ErrorResult {
+    fn SetFormAction(&mut self, _form_action: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn FormEnctype(&self) -> DOMString {
+    fn FormEnctype(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetFormEnctype(&mut self, _form_enctype: DOMString) -> ErrorResult {
+    fn SetFormEnctype(&mut self, _form_enctype: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn FormMethod(&self) -> DOMString {
+    fn FormMethod(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetFormMethod(&mut self, _form_method: DOMString) -> ErrorResult {
+    fn SetFormMethod(&mut self, _form_method: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn FormNoValidate(&self) -> bool {
+    fn FormNoValidate(&self) -> bool {
         false
     }
 
-    pub fn SetFormNoValidate(&mut self, _form_no_validate: bool) -> ErrorResult {
+    fn SetFormNoValidate(&mut self, _form_no_validate: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn FormTarget(&self) -> DOMString {
+    fn FormTarget(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetFormTarget(&mut self, _form_target: DOMString) -> ErrorResult {
+    fn SetFormTarget(&mut self, _form_target: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Height(&self) -> u32 {
+    fn Height(&self) -> u32 {
         0
     }
 
-    pub fn SetHeight(&mut self, _height: u32) -> ErrorResult {
+    fn SetHeight(&mut self, _height: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Indeterminate(&self) -> bool {
+    fn Indeterminate(&self) -> bool {
         false
     }
 
-    pub fn SetIndeterminate(&mut self, _indeterminate: bool) {
+    fn SetIndeterminate(&mut self, _indeterminate: bool) {
     }
 
-    pub fn InputMode(&self) -> DOMString {
+    fn InputMode(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetInputMode(&mut self, _input_mode: DOMString) -> ErrorResult {
+    fn SetInputMode(&mut self, _input_mode: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Max(&self) -> DOMString {
+    fn Max(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetMax(&mut self, _max: DOMString) -> ErrorResult {
+    fn SetMax(&mut self, _max: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn MaxLength(&self) -> i32 {
+    fn MaxLength(&self) -> i32 {
         0
     }
 
-    pub fn SetMaxLength(&mut self, _max_length: i32) -> ErrorResult {
+    fn SetMaxLength(&mut self, _max_length: i32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Min(&self) -> DOMString {
+    fn Min(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetMin(&mut self, _min: DOMString) -> ErrorResult {
+    fn SetMin(&mut self, _min: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Multiple(&self) -> bool {
+    fn Multiple(&self) -> bool {
         false
     }
 
-    pub fn SetMultiple(&mut self, _multiple: bool) -> ErrorResult {
+    fn SetMultiple(&mut self, _multiple: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Name(&self) -> DOMString {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&mut self, _name: DOMString) -> ErrorResult {
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Pattern(&self) -> DOMString {
+    fn Pattern(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetPattern(&mut self, _pattern: DOMString) -> ErrorResult {
+    fn SetPattern(&mut self, _pattern: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Placeholder(&self) -> DOMString {
+    fn Placeholder(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetPlaceholder(&mut self, _placeholder: DOMString) -> ErrorResult {
+    fn SetPlaceholder(&mut self, _placeholder: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn ReadOnly(&self) -> bool {
+    fn ReadOnly(&self) -> bool {
         false
     }
 
-    pub fn SetReadOnly(&mut self, _read_only: bool) -> ErrorResult {
+    fn SetReadOnly(&mut self, _read_only: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Required(&self) -> bool {
+    fn Required(&self) -> bool {
         false
     }
 
-    pub fn SetRequired(&mut self, _required: bool) -> ErrorResult {
+    fn SetRequired(&mut self, _required: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Size(&self) -> u32 {
+    fn Size(&self) -> u32 {
         0
     }
 
-    pub fn SetSize(&mut self, _size: u32) -> ErrorResult {
+    fn SetSize(&mut self, _size: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Src(&self) -> DOMString {
+    fn Src(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetSrc(&mut self, _src: DOMString) -> ErrorResult {
+    fn SetSrc(&mut self, _src: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Step(&self) -> DOMString {
+    fn Step(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetStep(&mut self, _step: DOMString) -> ErrorResult {
+    fn SetStep(&mut self, _step: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetType(&mut self, _type: DOMString) -> ErrorResult {
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn DefaultValue(&self) -> DOMString {
+    fn DefaultValue(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetDefaultValue(&mut self, _default_value: DOMString) -> ErrorResult {
+    fn SetDefaultValue(&mut self, _default_value: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Value(&self) -> DOMString {
+    fn Value(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetValue(&mut self, _value: DOMString) -> ErrorResult {
+    fn SetValue(&mut self, _value: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Width(&self) -> u32 {
+    fn Width(&self) -> u32 {
         0
     }
 
-    pub fn SetWidth(&mut self, _width: u32) {
+    fn SetWidth(&mut self, _width: u32) {
     }
 
-    pub fn WillValidate(&self) -> bool {
+    fn WillValidate(&self) -> bool {
         false
     }
 
-    pub fn SetWillValidate(&self, _will_validate: bool) {
+    fn SetWillValidate(&self, _will_validate: bool) {
     }
 
-    pub fn GetValidationMessage(&self) -> Fallible<DOMString> {
+    fn GetValidationMessage(&self) -> Fallible<DOMString> {
         Ok(~"")
     }
 
-    pub fn CheckValidity(&self) -> bool {
+    fn CheckValidity(&self) -> bool {
         false
     }
 
-    pub fn SetCustomValidity(&self, _error: DOMString) {
+    fn SetCustomValidity(&self, _error: DOMString) {
     }
 
-    pub fn Select(&self) {
+    fn Select(&self) {
     }
 
-    pub fn GetSelectionStart(&self) -> Fallible<i32> {
+    fn GetSelectionStart(&self) -> Fallible<i32> {
         Ok(0)
     }
 
-    pub fn SetSelectionStart(&mut self, _selection_start: i32) -> ErrorResult {
+    fn SetSelectionStart(&mut self, _selection_start: i32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetSelectionEnd(&self) -> Fallible<i32> {
+    fn GetSelectionEnd(&self) -> Fallible<i32> {
         Ok(0)
     }
 
-    pub fn SetSelectionEnd(&mut self, _selection_end: i32) -> ErrorResult {
+    fn SetSelectionEnd(&mut self, _selection_end: i32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetSelectionDirection(&self) -> Fallible<DOMString> {
+    fn GetSelectionDirection(&self) -> Fallible<DOMString> {
         Ok(~"")
     }
 
-    pub fn SetSelectionDirection(&mut self, _selection_direction: DOMString) -> ErrorResult {
+    fn SetSelectionDirection(&mut self, _selection_direction: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Align(&self) -> DOMString {
+    fn Align(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn UseMap(&self) -> DOMString {
+    fn UseMap(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetUseMap(&mut self, _align: DOMString) -> ErrorResult {
+    fn SetUseMap(&mut self, _align: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmllabelelement.rs b/src/components/script/dom/htmllabelelement.rs
index dcd080f7f24..c11132a7e9b 100644
--- a/src/components/script/dom/htmllabelelement.rs
+++ b/src/components/script/dom/htmllabelelement.rs
@@ -39,11 +39,17 @@ impl HTMLLabelElement {
     }
 }
 
-impl HTMLLabelElement {
-    pub fn HtmlFor(&self) -> DOMString {
+pub trait HTMLLabelElementMethods {
+    fn HtmlFor(&self) -> DOMString;
+    fn SetHtmlFor(&mut self, _html_for: DOMString);
+}
+
+impl<'a> HTMLLabelElementMethods for JSRef<'a, HTMLLabelElement> {
+    fn HtmlFor(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHtmlFor(&mut self, _html_for: DOMString) {
+    fn SetHtmlFor(&mut self, _html_for: DOMString) {
     }
 }
+
diff --git a/src/components/script/dom/htmllegendelement.rs b/src/components/script/dom/htmllegendelement.rs
index 696247f40db..22ddb92aca5 100644
--- a/src/components/script/dom/htmllegendelement.rs
+++ b/src/components/script/dom/htmllegendelement.rs
@@ -40,12 +40,18 @@ impl HTMLLegendElement {
     }
 }
 
-impl HTMLLegendElement {
-    pub fn Align(&self) -> DOMString {
+pub trait HTMLLegendElementMethods {
+    fn Align(&self) -> DOMString;
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLLegendElementMethods for JSRef<'a, HTMLLegendElement> {
+    fn Align(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmllielement.rs b/src/components/script/dom/htmllielement.rs
index d3b625e5987..97dee3e3f25 100644
--- a/src/components/script/dom/htmllielement.rs
+++ b/src/components/script/dom/htmllielement.rs
@@ -40,20 +40,28 @@ impl HTMLLIElement {
     }
 }
 
-impl HTMLLIElement {
-    pub fn Value(&self) -> i32 {
+pub trait HTMLLIElementMethods {
+    fn Value(&self) -> i32;
+    fn SetValue(&mut self, _value: i32) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLLIElementMethods for JSRef<'a, HTMLLIElement> {
+    fn Value(&self) -> i32 {
         0
     }
 
-    pub fn SetValue(&mut self, _value: i32) -> ErrorResult {
+    fn SetValue(&mut self, _value: i32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetType(&mut self, _type: DOMString) -> ErrorResult {
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmllinkelement.rs b/src/components/script/dom/htmllinkelement.rs
index 3d474d1af64..f40bd112585 100644
--- a/src/components/script/dom/htmllinkelement.rs
+++ b/src/components/script/dom/htmllinkelement.rs
@@ -40,83 +40,107 @@ impl HTMLLinkElement {
     }
 }
 
-impl HTMLLinkElement {
-    pub fn Disabled(&self) -> bool {
+pub trait HTMLLinkElementMethods {
+    fn Disabled(&self) -> bool;
+    fn SetDisabled(&mut self, _disable: bool);
+    fn Href(&self) -> DOMString;
+    fn SetHref(&mut self, _href: DOMString) -> ErrorResult;
+    fn CrossOrigin(&self) -> DOMString;
+    fn SetCrossOrigin(&mut self, _cross_origin: DOMString) -> ErrorResult;
+    fn Rel(&self) -> DOMString;
+    fn SetRel(&mut self, _rel: DOMString) -> ErrorResult;
+    fn Media(&self) -> DOMString;
+    fn SetMedia(&mut self, _media: DOMString) -> ErrorResult;
+    fn Hreflang(&self) -> DOMString;
+    fn SetHreflang(&mut self, _href: DOMString) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult;
+    fn Charset(&self) -> DOMString;
+    fn SetCharset(&mut self, _charset: DOMString) -> ErrorResult;
+    fn Rev(&self) -> DOMString;
+    fn SetRev(&mut self, _rev: DOMString) -> ErrorResult;
+    fn Target(&self) -> DOMString;
+    fn SetTarget(&mut self, _target: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLLinkElementMethods for JSRef<'a, HTMLLinkElement> {
+    fn Disabled(&self) -> bool {
         false
     }
 
-    pub fn SetDisabled(&mut self, _disable: bool) {
+    fn SetDisabled(&mut self, _disable: bool) {
     }
 
-    pub fn Href(&self) -> DOMString {
+    fn Href(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHref(&mut self, _href: DOMString) -> ErrorResult {
+    fn SetHref(&mut self, _href: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn CrossOrigin(&self) -> DOMString {
+    fn CrossOrigin(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCrossOrigin(&mut self, _cross_origin: DOMString) -> ErrorResult {
+    fn SetCrossOrigin(&mut self, _cross_origin: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Rel(&self) -> DOMString {
+    fn Rel(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetRel(&mut self, _rel: DOMString) -> ErrorResult {
+    fn SetRel(&mut self, _rel: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Media(&self) -> DOMString {
+    fn Media(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetMedia(&mut self, _media: DOMString) -> ErrorResult {
+    fn SetMedia(&mut self, _media: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Hreflang(&self) -> DOMString {
+    fn Hreflang(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHreflang(&mut self, _href: DOMString) -> ErrorResult {
+    fn SetHreflang(&mut self, _href: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetType(&mut self, _type: DOMString) -> ErrorResult {
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Charset(&self) -> DOMString {
+    fn Charset(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCharset(&mut self, _charset: DOMString) -> ErrorResult {
+    fn SetCharset(&mut self, _charset: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Rev(&self) -> DOMString {
+    fn Rev(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetRev(&mut self, _rev: DOMString) -> ErrorResult {
+    fn SetRev(&mut self, _rev: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Target(&self) -> DOMString {
+    fn Target(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetTarget(&mut self, _target: DOMString) -> ErrorResult {
+    fn SetTarget(&mut self, _target: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlmainelement.rs b/src/components/script/dom/htmlmainelement.rs
index ad9a2c6af1e..4024f1ee7fa 100644
--- a/src/components/script/dom/htmlmainelement.rs
+++ b/src/components/script/dom/htmlmainelement.rs
@@ -38,3 +38,6 @@ impl HTMLMainElement {
         Node::reflect_node(~element, document, HTMLMainElementBinding::Wrap)
     }
 }
+
+pub trait HTMLMainElementMethods {
+}
diff --git a/src/components/script/dom/htmlmapelement.rs b/src/components/script/dom/htmlmapelement.rs
index 18dfd17e88b..dbc55463351 100644
--- a/src/components/script/dom/htmlmapelement.rs
+++ b/src/components/script/dom/htmlmapelement.rs
@@ -41,16 +41,22 @@ impl HTMLMapElement {
     }
 }
 
-impl HTMLMapElement {
-    pub fn Name(&self) -> DOMString {
+pub trait HTMLMapElementMethods {
+    fn Name(&self) -> DOMString;
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult;
+    fn Areas(&self) -> Unrooted<HTMLCollection>;
+}
+
+impl<'a> HTMLMapElementMethods for JSRef<'a, HTMLMapElement> {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&mut self, _name: DOMString) -> ErrorResult {
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Areas(&self) -> Unrooted<HTMLCollection> {
+    fn Areas(&self) -> Unrooted<HTMLCollection> {
         let roots = RootCollection::new();
         // FIXME: https://github.com/mozilla/servo/issues/1845
         let doc = self.htmlelement.element.node.owner_doc().root(&roots);
@@ -58,3 +64,4 @@ impl HTMLMapElement {
         HTMLCollection::new(&*window, Static(vec!()))
     }
 }
+
diff --git a/src/components/script/dom/htmlmediaelement.rs b/src/components/script/dom/htmlmediaelement.rs
index 179c8e97407..4f68a11f9c0 100644
--- a/src/components/script/dom/htmlmediaelement.rs
+++ b/src/components/script/dom/htmlmediaelement.rs
@@ -2,7 +2,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-use dom::bindings::js::JS;
+use dom::bindings::js::{JS, JSRef};
 use dom::bindings::codegen::InheritTypes::HTMLMediaElementDerived;
 use dom::bindings::error::ErrorResult;
 use dom::document::Document;
@@ -35,139 +35,177 @@ impl HTMLMediaElement {
     }
 }
 
-impl HTMLMediaElement {
-    pub fn Src(&self) -> DOMString {
+pub trait HTMLMediaElementMethods {
+    fn Src(&self) -> DOMString;
+    fn SetSrc(&mut self, _src: DOMString) -> ErrorResult;
+    fn CurrentSrc(&self) -> DOMString;
+    fn CrossOrigin(&self) -> DOMString;
+    fn SetCrossOrigin(&mut self, _cross_origin: DOMString) -> ErrorResult;
+    fn Preload(&self) -> DOMString;
+    fn SetPreload(&mut self, _preload: DOMString) -> ErrorResult;
+    fn Load(&self);
+    fn CanPlayType(&self, _type: DOMString) -> DOMString;
+    fn ReadyState(&self) -> u16;
+    fn Seeking(&self) -> bool;
+    fn CurrentTime(&self) -> f64;
+    fn SetCurrentTime(&mut self, _current_time: f64) -> ErrorResult;
+    fn GetDuration(&self) -> f64;
+    fn Paused(&self) -> bool;
+    fn DefaultPlaybackRate(&self) -> f64;
+    fn SetDefaultPlaybackRate(&mut self, _default_playback_rate: f64) -> ErrorResult;
+    fn PlaybackRate(&self) -> f64;
+    fn SetPlaybackRate(&mut self, _playback_rate: f64) -> ErrorResult;
+    fn Ended(&self) -> bool;
+    fn Autoplay(&self) -> bool;
+    fn SetAutoplay(&mut self, _autoplay: bool) -> ErrorResult;
+    fn Loop(&self) -> bool;
+    fn SetLoop(&mut self, _loop: bool) -> ErrorResult;
+    fn Play(&self) -> ErrorResult;
+    fn Pause(&self) -> ErrorResult;
+    fn Controls(&self) -> bool;
+    fn SetControls(&mut self, _controls: bool) -> ErrorResult;
+    fn Volume(&self) -> f64;
+    fn SetVolume(&mut self, _volume: f64) -> ErrorResult;
+    fn Muted(&self) -> bool;
+    fn SetMuted(&mut self, _muted: bool);
+    fn DefaultMuted(&self) -> bool;
+    fn SetDefaultMuted(&mut self, _default_muted: bool) -> ErrorResult;
+}
+
+impl<'a> HTMLMediaElementMethods for JSRef<'a, HTMLMediaElement> {
+    fn Src(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetSrc(&mut self, _src: DOMString) -> ErrorResult {
+    fn SetSrc(&mut self, _src: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn CurrentSrc(&self) -> DOMString {
+    fn CurrentSrc(&self) -> DOMString {
         ~""
     }
 
-    pub fn CrossOrigin(&self) -> DOMString {
+    fn CrossOrigin(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCrossOrigin(&mut self, _cross_origin: DOMString) -> ErrorResult {
+    fn SetCrossOrigin(&mut self, _cross_origin: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Preload(&self) -> DOMString {
+    fn Preload(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetPreload(&mut self, _preload: DOMString) -> ErrorResult {
+    fn SetPreload(&mut self, _preload: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Load(&self) {
+    fn Load(&self) {
     }
 
-    pub fn CanPlayType(&self, _type: DOMString) -> DOMString {
+    fn CanPlayType(&self, _type: DOMString) -> DOMString {
         ~""
     }
 
-    pub fn ReadyState(&self) -> u16 {
+    fn ReadyState(&self) -> u16 {
         0
     }
 
-    pub fn Seeking(&self) -> bool {
+    fn Seeking(&self) -> bool {
         false
     }
 
-    pub fn CurrentTime(&self) -> f64 {
+    fn CurrentTime(&self) -> f64 {
         0f64
     }
 
-    pub fn SetCurrentTime(&mut self, _current_time: f64) -> ErrorResult {
+    fn SetCurrentTime(&mut self, _current_time: f64) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetDuration(&self) -> f64 {
+    fn GetDuration(&self) -> f64 {
         0f64
     }
 
-    pub fn Paused(&self) -> bool {
+    fn Paused(&self) -> bool {
         false
     }
 
-    pub fn DefaultPlaybackRate(&self) -> f64 {
+    fn DefaultPlaybackRate(&self) -> f64 {
         0f64
     }
 
-    pub fn SetDefaultPlaybackRate(&mut self, _default_playback_rate: f64) -> ErrorResult {
+    fn SetDefaultPlaybackRate(&mut self, _default_playback_rate: f64) -> ErrorResult {
         Ok(())
     }
 
-    pub fn PlaybackRate(&self) -> f64 {
+    fn PlaybackRate(&self) -> f64 {
         0f64
     }
 
-    pub fn SetPlaybackRate(&mut self, _playback_rate: f64) -> ErrorResult {
+    fn SetPlaybackRate(&mut self, _playback_rate: f64) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Ended(&self) -> bool {
+    fn Ended(&self) -> bool {
         false
     }
 
-    pub fn Autoplay(&self) -> bool {
+    fn Autoplay(&self) -> bool {
         false
     }
 
-    pub fn SetAutoplay(&mut self, _autoplay: bool) -> ErrorResult {
+    fn SetAutoplay(&mut self, _autoplay: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Loop(&self) -> bool {
+    fn Loop(&self) -> bool {
         false
     }
 
-    pub fn SetLoop(&mut self, _loop: bool) -> ErrorResult {
+    fn SetLoop(&mut self, _loop: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Play(&self) -> ErrorResult {
+    fn Play(&self) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Pause(&self) -> ErrorResult {
+    fn Pause(&self) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Controls(&self) -> bool {
+    fn Controls(&self) -> bool {
         false
     }
 
-    pub fn SetControls(&mut self, _controls: bool) -> ErrorResult {
+    fn SetControls(&mut self, _controls: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Volume(&self) -> f64 {
+    fn Volume(&self) -> f64 {
         0f64
     }
 
-    pub fn SetVolume(&mut self, _volume: f64) -> ErrorResult {
+    fn SetVolume(&mut self, _volume: f64) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Muted(&self) -> bool {
+    fn Muted(&self) -> bool {
         false
     }
 
-    pub fn SetMuted(&mut self, _muted: bool) {
+    fn SetMuted(&mut self, _muted: bool) {
     }
 
-    pub fn DefaultMuted(&self) -> bool {
+    fn DefaultMuted(&self) -> bool {
         false
     }
 
-    pub fn SetDefaultMuted(&mut self, _default_muted: bool) -> ErrorResult {
+    fn SetDefaultMuted(&mut self, _default_muted: bool) -> ErrorResult {
         Ok(())
     }
 }
 
+
diff --git a/src/components/script/dom/htmlmetaelement.rs b/src/components/script/dom/htmlmetaelement.rs
index 737cc6710fc..89520346b53 100644
--- a/src/components/script/dom/htmlmetaelement.rs
+++ b/src/components/script/dom/htmlmetaelement.rs
@@ -40,36 +40,48 @@ impl HTMLMetaElement {
     }
 }
 
-impl HTMLMetaElement {
-    pub fn Name(&self) -> DOMString {
+pub trait HTMLMetaElementMethods {
+    fn Name(&self) -> DOMString;
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult;
+    fn HttpEquiv(&self) -> DOMString;
+    fn SetHttpEquiv(&mut self, _http_equiv: DOMString) -> ErrorResult;
+    fn Content(&self) -> DOMString;
+    fn SetContent(&mut self, _content: DOMString) -> ErrorResult;
+    fn Scheme(&self) -> DOMString;
+    fn SetScheme(&mut self, _scheme: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLMetaElementMethods for JSRef<'a, HTMLMetaElement> {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&mut self, _name: DOMString) -> ErrorResult {
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn HttpEquiv(&self) -> DOMString {
+    fn HttpEquiv(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHttpEquiv(&mut self, _http_equiv: DOMString) -> ErrorResult {
+    fn SetHttpEquiv(&mut self, _http_equiv: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Content(&self) -> DOMString {
+    fn Content(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetContent(&mut self, _content: DOMString) -> ErrorResult {
+    fn SetContent(&mut self, _content: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Scheme(&self) -> DOMString {
+    fn Scheme(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetScheme(&mut self, _scheme: DOMString) -> ErrorResult {
+    fn SetScheme(&mut self, _scheme: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlmeterelement.rs b/src/components/script/dom/htmlmeterelement.rs
index 9d5f699ae14..685d96f7a0b 100644
--- a/src/components/script/dom/htmlmeterelement.rs
+++ b/src/components/script/dom/htmlmeterelement.rs
@@ -40,52 +40,68 @@ impl HTMLMeterElement {
     }
 }
 
-impl HTMLMeterElement {
-    pub fn Value(&self) -> f64 {
+pub trait HTMLMeterElementMethods {
+    fn Value(&self) -> f64;
+    fn SetValue(&mut self, _value: f64) -> ErrorResult;
+    fn Min(&self) -> f64;
+    fn SetMin(&mut self, _min: f64) -> ErrorResult;
+    fn Max(&self) -> f64;
+    fn SetMax(&mut self, _max: f64) -> ErrorResult;
+    fn Low(&self) -> f64;
+    fn SetLow(&mut self, _low: f64) -> ErrorResult;
+    fn High(&self) -> f64;
+    fn SetHigh(&mut self, _high: f64) -> ErrorResult;
+    fn Optimum(&self) -> f64;
+    fn SetOptimum(&mut self, _optimum: f64) -> ErrorResult;
+}
+
+impl<'a> HTMLMeterElementMethods for JSRef<'a, HTMLMeterElement> {
+    fn Value(&self) -> f64 {
         0.0
     }
 
-    pub fn SetValue(&mut self, _value: f64) -> ErrorResult {
+    fn SetValue(&mut self, _value: f64) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Min(&self) -> f64 {
+    fn Min(&self) -> f64 {
         0.0
     }
 
-    pub fn SetMin(&mut self, _min: f64) -> ErrorResult {
+    fn SetMin(&mut self, _min: f64) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Max(&self) -> f64 {
+    fn Max(&self) -> f64 {
         0.0
     }
 
-    pub fn SetMax(&mut self, _max: f64) -> ErrorResult {
+    fn SetMax(&mut self, _max: f64) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Low(&self) -> f64 {
+    fn Low(&self) -> f64 {
         0.0
     }
 
-    pub fn SetLow(&mut self, _low: f64) -> ErrorResult {
+    fn SetLow(&mut self, _low: f64) -> ErrorResult {
         Ok(())
     }
 
-    pub fn High(&self) -> f64 {
+    fn High(&self) -> f64 {
         0.0
     }
 
-    pub fn SetHigh(&mut self, _high: f64) -> ErrorResult {
+    fn SetHigh(&mut self, _high: f64) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Optimum(&self) -> f64 {
+    fn Optimum(&self) -> f64 {
         0.0
     }
 
-    pub fn SetOptimum(&mut self, _optimum: f64) -> ErrorResult {
+    fn SetOptimum(&mut self, _optimum: f64) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlmodelement.rs b/src/components/script/dom/htmlmodelement.rs
index 41ed8244a9d..6a9b33106a2 100644
--- a/src/components/script/dom/htmlmodelement.rs
+++ b/src/components/script/dom/htmlmodelement.rs
@@ -40,20 +40,28 @@ impl HTMLModElement {
     }
 }
 
-impl HTMLModElement {
-    pub fn Cite(&self) -> DOMString {
+pub trait HTMLModElementMethods {
+    fn Cite(&self) -> DOMString;
+    fn SetCite(&mut self, _cite: DOMString) -> ErrorResult;
+    fn DateTime(&self) -> DOMString;
+    fn SetDateTime(&mut self, _datetime: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLModElementMethods for JSRef<'a, HTMLModElement> {
+    fn Cite(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCite(&mut self, _cite: DOMString) -> ErrorResult {
+    fn SetCite(&mut self, _cite: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn DateTime(&self) -> DOMString {
+    fn DateTime(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetDateTime(&mut self, _datetime: DOMString) -> ErrorResult {
+    fn SetDateTime(&mut self, _datetime: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlobjectelement.rs b/src/components/script/dom/htmlobjectelement.rs
index 4814ac4b337..7fcc3c0a5da 100644
--- a/src/components/script/dom/htmlobjectelement.rs
+++ b/src/components/script/dom/htmlobjectelement.rs
@@ -2,6 +2,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+use dom::attr::AttrMethods;
 use dom::bindings::codegen::BindingDeclarations::HTMLObjectElementBinding;
 use dom::bindings::codegen::InheritTypes::HTMLObjectElementDerived;
 use dom::bindings::codegen::InheritTypes::{ElementCast, HTMLElementCast};
@@ -79,170 +80,214 @@ impl<'a> ProcessDataURL for JSRef<'a, HTMLObjectElement> {
     }
 }
 
-impl HTMLObjectElement {
-    pub fn Data(&self) -> DOMString {
+pub trait HTMLObjectElementMethods {
+    fn Data(&self) -> DOMString;
+    fn SetData(&mut self, _data: DOMString) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult;
+    fn Name(&self) -> DOMString;
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult;
+    fn UseMap(&self) -> DOMString;
+    fn SetUseMap(&mut self, _use_map: DOMString) -> ErrorResult;
+    fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>>;
+    fn Width(&self) -> DOMString;
+    fn SetWidth(&mut self, _width: DOMString) -> ErrorResult;
+    fn Height(&self) -> DOMString;
+    fn SetHeight(&mut self, _height: DOMString) -> ErrorResult;
+    fn GetContentDocument(&self) -> Option<Unrooted<Document>>;
+    fn GetContentWindow(&self) -> Option<Unrooted<Window>>;
+    fn WillValidate(&self) -> bool;
+    fn Validity(&self) -> Unrooted<ValidityState>;
+    fn ValidationMessage(&self) -> DOMString;
+    fn CheckValidity(&self) -> bool;
+    fn SetCustomValidity(&mut self, _error: DOMString);
+    fn Align(&self) -> DOMString;
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult;
+    fn Archive(&self) -> DOMString;
+    fn SetArchive(&mut self, _archive: DOMString) -> ErrorResult;
+    fn Code(&self) -> DOMString;
+    fn SetCode(&mut self, _code: DOMString) -> ErrorResult;
+    fn Declare(&self) -> bool;
+    fn SetDeclare(&mut self, _declare: bool) -> ErrorResult;
+    fn Hspace(&self) -> u32;
+    fn SetHspace(&mut self, _hspace: u32) -> ErrorResult;
+    fn Standby(&self) -> DOMString;
+    fn SetStandby(&mut self, _standby: DOMString) -> ErrorResult;
+    fn Vspace(&self) -> u32;
+    fn SetVspace(&mut self, _vspace: u32) -> ErrorResult;
+    fn CodeBase(&self) -> DOMString;
+    fn SetCodeBase(&mut self, _codebase: DOMString) -> ErrorResult;
+    fn CodeType(&self) -> DOMString;
+    fn SetCodeType(&mut self, _codetype: DOMString) -> ErrorResult;
+    fn Border(&self) -> DOMString;
+    fn SetBorder(&mut self, _border: DOMString) -> ErrorResult;
+    fn GetSVGDocument(&self) -> Option<Unrooted<Document>>;
+}
+
+impl<'a> HTMLObjectElementMethods for JSRef<'a, HTMLObjectElement> {
+    fn Data(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetData(&mut self, _data: DOMString) -> ErrorResult {
+    fn SetData(&mut self, _data: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetType(&mut self, _type: DOMString) -> ErrorResult {
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Name(&self) -> DOMString {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&mut self, _name: DOMString) -> ErrorResult {
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn UseMap(&self) -> DOMString {
+    fn UseMap(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetUseMap(&mut self, _use_map: DOMString) -> ErrorResult {
+    fn SetUseMap(&mut self, _use_map: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>> {
+    fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>> {
         None
     }
 
-    pub fn Width(&self) -> DOMString {
+    fn Width(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetWidth(&mut self, _width: DOMString) -> ErrorResult {
+    fn SetWidth(&mut self, _width: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Height(&self) -> DOMString {
+    fn Height(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHeight(&mut self, _height: DOMString) -> ErrorResult {
+    fn SetHeight(&mut self, _height: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetContentDocument(&self) -> Option<Unrooted<Document>> {
+    fn GetContentDocument(&self) -> Option<Unrooted<Document>> {
         None
     }
 
-    pub fn GetContentWindow(&self) -> Option<Unrooted<Window>> {
+    fn GetContentWindow(&self) -> Option<Unrooted<Window>> {
         None
     }
 
-    pub fn WillValidate(&self) -> bool {
+    fn WillValidate(&self) -> bool {
         false
     }
 
-    pub fn Validity(&self) -> Unrooted<ValidityState> {
+    fn Validity(&self) -> Unrooted<ValidityState> {
         let roots = RootCollection::new();
         let doc = self.htmlelement.element.node.owner_doc().root(&roots);
         let window = doc.deref().window.root(&roots);
         ValidityState::new(&window.root_ref())
     }
 
-    pub fn ValidationMessage(&self) -> DOMString {
+    fn ValidationMessage(&self) -> DOMString {
         ~""
     }
 
-    pub fn CheckValidity(&self) -> bool {
+    fn CheckValidity(&self) -> bool {
         false
     }
 
-    pub fn SetCustomValidity(&mut self, _error: DOMString) {
+    fn SetCustomValidity(&mut self, _error: DOMString) {
     }
 
-    pub fn Align(&self) -> DOMString {
+    fn Align(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Archive(&self) -> DOMString {
+    fn Archive(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetArchive(&mut self, _archive: DOMString) -> ErrorResult {
+    fn SetArchive(&mut self, _archive: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Code(&self) -> DOMString {
+    fn Code(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCode(&mut self, _code: DOMString) -> ErrorResult {
+    fn SetCode(&mut self, _code: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Declare(&self) -> bool {
+    fn Declare(&self) -> bool {
         false
     }
 
-    pub fn SetDeclare(&mut self, _declare: bool) -> ErrorResult {
+    fn SetDeclare(&mut self, _declare: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Hspace(&self) -> u32 {
+    fn Hspace(&self) -> u32 {
         0
     }
 
-    pub fn SetHspace(&mut self, _hspace: u32) -> ErrorResult {
+    fn SetHspace(&mut self, _hspace: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Standby(&self) -> DOMString {
+    fn Standby(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetStandby(&mut self, _standby: DOMString) -> ErrorResult {
+    fn SetStandby(&mut self, _standby: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Vspace(&self) -> u32 {
+    fn Vspace(&self) -> u32 {
         0
     }
 
-    pub fn SetVspace(&mut self, _vspace: u32) -> ErrorResult {
+    fn SetVspace(&mut self, _vspace: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn CodeBase(&self) -> DOMString {
+    fn CodeBase(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCodeBase(&mut self, _codebase: DOMString) -> ErrorResult {
+    fn SetCodeBase(&mut self, _codebase: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn CodeType(&self) -> DOMString {
+    fn CodeType(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCodeType(&mut self, _codetype: DOMString) -> ErrorResult {
+    fn SetCodeType(&mut self, _codetype: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Border(&self) -> DOMString {
+    fn Border(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetBorder(&mut self, _border: DOMString) -> ErrorResult {
+    fn SetBorder(&mut self, _border: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetSVGDocument(&self) -> Option<Unrooted<Document>> {
+    fn GetSVGDocument(&self) -> Option<Unrooted<Document>> {
         None
     }
 }
diff --git a/src/components/script/dom/htmlolistelement.rs b/src/components/script/dom/htmlolistelement.rs
index 1330e2cbd40..a7191eb4f31 100644
--- a/src/components/script/dom/htmlolistelement.rs
+++ b/src/components/script/dom/htmlolistelement.rs
@@ -40,36 +40,48 @@ impl HTMLOListElement {
     }
 }
 
-impl HTMLOListElement {
-    pub fn Reversed(&self) -> bool {
+pub trait HTMLOListElementMethods {
+    fn Reversed(&self) -> bool;
+    fn SetReversed(&self, _reversed: bool) -> ErrorResult;
+    fn Start(&self) -> i32;
+    fn SetStart(&mut self, _start: i32) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult;
+    fn Compact(&self) -> bool;
+    fn SetCompact(&self, _compact: bool) -> ErrorResult;
+}
+
+impl<'a> HTMLOListElementMethods for JSRef<'a, HTMLOListElement> {
+    fn Reversed(&self) -> bool {
         false
     }
 
-    pub fn SetReversed(&self, _reversed: bool) -> ErrorResult {
+    fn SetReversed(&self, _reversed: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Start(&self) -> i32 {
+    fn Start(&self) -> i32 {
         0
     }
 
-    pub fn SetStart(&mut self, _start: i32) -> ErrorResult {
+    fn SetStart(&mut self, _start: i32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetType(&mut self, _type: DOMString) -> ErrorResult {
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Compact(&self) -> bool {
+    fn Compact(&self) -> bool {
         false
     }
 
-    pub fn SetCompact(&self, _compact: bool) -> ErrorResult {
+    fn SetCompact(&self, _compact: bool) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmloptgroupelement.rs b/src/components/script/dom/htmloptgroupelement.rs
index d5eab9bec46..05f4cb5ef03 100644
--- a/src/components/script/dom/htmloptgroupelement.rs
+++ b/src/components/script/dom/htmloptgroupelement.rs
@@ -40,20 +40,28 @@ impl HTMLOptGroupElement {
     }
 }
 
-impl HTMLOptGroupElement {
-    pub fn Disabled(&self) -> bool {
+pub trait HTMLOptGroupElementMethods {
+    fn Disabled(&self) -> bool;
+    fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult;
+    fn Label(&self) -> DOMString;
+    fn SetLabel(&mut self, _label: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLOptGroupElementMethods for JSRef<'a, HTMLOptGroupElement> {
+    fn Disabled(&self) -> bool {
         false
     }
 
-    pub fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult {
+    fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Label(&self) -> DOMString {
+    fn Label(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetLabel(&mut self, _label: DOMString) -> ErrorResult {
+    fn SetLabel(&mut self, _label: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmloptionelement.rs b/src/components/script/dom/htmloptionelement.rs
index bf1f594009e..e9793fc1690 100644
--- a/src/components/script/dom/htmloptionelement.rs
+++ b/src/components/script/dom/htmloptionelement.rs
@@ -41,60 +41,78 @@ impl HTMLOptionElement {
     }
 }
 
-impl HTMLOptionElement {
-    pub fn Disabled(&self) -> bool {
+pub trait HTMLOptionElementMethods {
+    fn Disabled(&self) -> bool;
+    fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult;
+    fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>>;
+    fn Label(&self) -> DOMString;
+    fn SetLabel(&mut self, _label: DOMString) -> ErrorResult;
+    fn DefaultSelected(&self) -> bool;
+    fn SetDefaultSelected(&mut self, _default_selected: bool) -> ErrorResult;
+    fn Selected(&self) -> bool;
+    fn SetSelected(&mut self, _selected: bool) -> ErrorResult;
+    fn Value(&self) -> DOMString;
+    fn SetValue(&mut self, _value: DOMString) -> ErrorResult;
+    fn Text(&self) -> DOMString;
+    fn SetText(&mut self, _text: DOMString) -> ErrorResult;
+    fn Index(&self) -> i32;
+}
+
+impl<'a> HTMLOptionElementMethods for JSRef<'a, HTMLOptionElement> {
+    fn Disabled(&self) -> bool {
         false
     }
 
-    pub fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult {
+    fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>> {
+    fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>> {
         None
     }
 
-    pub fn Label(&self) -> DOMString {
+    fn Label(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetLabel(&mut self, _label: DOMString) -> ErrorResult {
+    fn SetLabel(&mut self, _label: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn DefaultSelected(&self) -> bool {
+    fn DefaultSelected(&self) -> bool {
         false
     }
 
-    pub fn SetDefaultSelected(&mut self, _default_selected: bool) -> ErrorResult {
+    fn SetDefaultSelected(&mut self, _default_selected: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Selected(&self) -> bool {
+    fn Selected(&self) -> bool {
         false
     }
 
-    pub fn SetSelected(&mut self, _selected: bool) -> ErrorResult {
+    fn SetSelected(&mut self, _selected: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Value(&self) -> DOMString {
+    fn Value(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetValue(&mut self, _value: DOMString) -> ErrorResult {
+    fn SetValue(&mut self, _value: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Text(&self) -> DOMString {
+    fn Text(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetText(&mut self, _text: DOMString) -> ErrorResult {
+    fn SetText(&mut self, _text: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Index(&self) -> i32 {
+    fn Index(&self) -> i32 {
         0
     }
 }
+
diff --git a/src/components/script/dom/htmloutputelement.rs b/src/components/script/dom/htmloutputelement.rs
index a72d9410d20..c7262b23de0 100644
--- a/src/components/script/dom/htmloutputelement.rs
+++ b/src/components/script/dom/htmloutputelement.rs
@@ -42,68 +42,88 @@ impl HTMLOutputElement {
     }
 }
 
-impl HTMLOutputElement {
-    pub fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>> {
+pub trait HTMLOutputElementMethods {
+    fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>>;
+    fn Name(&self) -> DOMString;
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn DefaultValue(&self) -> DOMString;
+    fn SetDefaultValue(&mut self, _value: DOMString) -> ErrorResult;
+    fn Value(&self) -> DOMString;
+    fn SetValue(&mut self, _value: DOMString) -> ErrorResult;
+    fn WillValidate(&self) -> bool;
+    fn SetWillValidate(&mut self, _will_validate: bool);
+    fn Validity(&self) -> Unrooted<ValidityState>;
+    fn SetValidity(&mut self, _validity: JS<ValidityState>);
+    fn ValidationMessage(&self) -> DOMString;
+    fn SetValidationMessage(&mut self, _message: DOMString) -> ErrorResult;
+    fn CheckValidity(&self) -> bool;
+    fn SetCustomValidity(&mut self, _error: DOMString);
+}
+
+impl<'a> HTMLOutputElementMethods for JSRef<'a, HTMLOutputElement> {
+    fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>> {
         None
     }
 
-    pub fn Name(&self) -> DOMString {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&mut self, _name: DOMString) -> ErrorResult {
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn DefaultValue(&self) -> DOMString {
+    fn DefaultValue(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetDefaultValue(&mut self, _value: DOMString) -> ErrorResult {
+    fn SetDefaultValue(&mut self, _value: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Value(&self) -> DOMString {
+    fn Value(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetValue(&mut self, _value: DOMString) -> ErrorResult {
+    fn SetValue(&mut self, _value: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn WillValidate(&self) -> bool {
+    fn WillValidate(&self) -> bool {
         false
     }
 
-    pub fn SetWillValidate(&mut self, _will_validate: bool) {
+    fn SetWillValidate(&mut self, _will_validate: bool) {
     }
 
-    pub fn Validity(&self) -> Unrooted<ValidityState> {
+    fn Validity(&self) -> Unrooted<ValidityState> {
         let roots = RootCollection::new();
         let doc = self.htmlelement.element.node.owner_doc().root(&roots);
         let window = doc.deref().window.root(&roots);
         ValidityState::new(&*window)
     }
 
-    pub fn SetValidity(&mut self, _validity: JS<ValidityState>) {
+    fn SetValidity(&mut self, _validity: JS<ValidityState>) {
     }
 
-    pub fn ValidationMessage(&self) -> DOMString {
+    fn ValidationMessage(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetValidationMessage(&mut self, _message: DOMString) -> ErrorResult {
+    fn SetValidationMessage(&mut self, _message: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn CheckValidity(&self) -> bool {
+    fn CheckValidity(&self) -> bool {
         true
     }
 
-    pub fn SetCustomValidity(&mut self, _error: DOMString) {
+    fn SetCustomValidity(&mut self, _error: DOMString) {
     }
 }
+
diff --git a/src/components/script/dom/htmlparagraphelement.rs b/src/components/script/dom/htmlparagraphelement.rs
index d5dafd6abda..90e3282c915 100644
--- a/src/components/script/dom/htmlparagraphelement.rs
+++ b/src/components/script/dom/htmlparagraphelement.rs
@@ -40,12 +40,18 @@ impl HTMLParagraphElement {
     }
 }
 
-impl HTMLParagraphElement {
-    pub fn Align(&self) -> DOMString {
+pub trait HTMLParagraphElementMethods {
+    fn Align(&self) -> DOMString;
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLParagraphElementMethods for JSRef<'a, HTMLParagraphElement> {
+    fn Align(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlparamelement.rs b/src/components/script/dom/htmlparamelement.rs
index db4d9ec1b89..41f45b31d17 100644
--- a/src/components/script/dom/htmlparamelement.rs
+++ b/src/components/script/dom/htmlparamelement.rs
@@ -40,36 +40,48 @@ impl HTMLParamElement {
     }
 }
 
-impl HTMLParamElement {
-    pub fn Name(&self) -> DOMString {
+pub trait HTMLParamElementMethods {
+    fn Name(&self) -> DOMString;
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult;
+    fn Value(&self) -> DOMString;
+    fn SetValue(&mut self, _value: DOMString) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult;
+    fn ValueType(&self) -> DOMString;
+    fn SetValueType(&mut self, _value_type: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLParamElementMethods for JSRef<'a, HTMLParamElement> {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&mut self, _name: DOMString) -> ErrorResult {
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Value(&self) -> DOMString {
+    fn Value(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetValue(&mut self, _value: DOMString) -> ErrorResult {
+    fn SetValue(&mut self, _value: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetType(&mut self, _type: DOMString) -> ErrorResult {
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn ValueType(&self) -> DOMString {
+    fn ValueType(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetValueType(&mut self, _value_type: DOMString) -> ErrorResult {
+    fn SetValueType(&mut self, _value_type: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlpreelement.rs b/src/components/script/dom/htmlpreelement.rs
index e2c404074bd..34eb9923a52 100644
--- a/src/components/script/dom/htmlpreelement.rs
+++ b/src/components/script/dom/htmlpreelement.rs
@@ -40,12 +40,18 @@ impl HTMLPreElement {
     }
 }
 
-impl HTMLPreElement {
-    pub fn Width(&self) -> i32 {
+pub trait HTMLPreElementMethods {
+    fn Width(&self) -> i32;
+    fn SetWidth(&mut self, _width: i32) -> ErrorResult;
+}
+
+impl<'a> HTMLPreElementMethods for JSRef<'a, HTMLPreElement> {
+    fn Width(&self) -> i32 {
         0
     }
 
-    pub fn SetWidth(&mut self, _width: i32) -> ErrorResult {
+    fn SetWidth(&mut self, _width: i32) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlprogresselement.rs b/src/components/script/dom/htmlprogresselement.rs
index 024025afa6d..891df6918fe 100644
--- a/src/components/script/dom/htmlprogresselement.rs
+++ b/src/components/script/dom/htmlprogresselement.rs
@@ -40,28 +40,38 @@ impl HTMLProgressElement {
     }
 }
 
-impl HTMLProgressElement {
-    pub fn Value(&self) -> f64 {
+pub trait HTMLProgressElementMethods {
+    fn Value(&self) -> f64;
+    fn SetValue(&mut self, _value: f64) -> ErrorResult;
+    fn Max(&self) -> f64;
+    fn SetMax(&mut self, _max: f64) -> ErrorResult;
+    fn Position(&self) -> f64;
+    fn GetPositiom(&self) -> Fallible<f64>;
+}
+
+impl<'a> HTMLProgressElementMethods for JSRef<'a, HTMLProgressElement> {
+    fn Value(&self) -> f64 {
         0f64
     }
 
-    pub fn SetValue(&mut self, _value: f64) -> ErrorResult {
+    fn SetValue(&mut self, _value: f64) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Max(&self) -> f64 {
+    fn Max(&self) -> f64 {
         0f64
     }
 
-    pub fn SetMax(&mut self, _max: f64) -> ErrorResult {
+    fn SetMax(&mut self, _max: f64) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Position(&self) -> f64 {
+    fn Position(&self) -> f64 {
         0f64
     }
 
-    pub fn GetPositiom(&self) -> Fallible<f64> {
+    fn GetPositiom(&self) -> Fallible<f64> {
         Ok(0f64)
     }
 }
+
diff --git a/src/components/script/dom/htmlquoteelement.rs b/src/components/script/dom/htmlquoteelement.rs
index 9c67c2ac2f4..db7edcbede4 100644
--- a/src/components/script/dom/htmlquoteelement.rs
+++ b/src/components/script/dom/htmlquoteelement.rs
@@ -40,12 +40,18 @@ impl HTMLQuoteElement {
     }
 }
 
-impl HTMLQuoteElement {
-    pub fn Cite(&self) -> DOMString {
+pub trait HTMLQuoteElementMethods {
+    fn Cite(&self) -> DOMString;
+    fn SetCite(&self, _cite: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLQuoteElementMethods for JSRef<'a, HTMLQuoteElement> {
+    fn Cite(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCite(&self, _cite: DOMString) -> ErrorResult {
+    fn SetCite(&self, _cite: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlscriptelement.rs b/src/components/script/dom/htmlscriptelement.rs
index 808b05a12cf..fabe876a10f 100644
--- a/src/components/script/dom/htmlscriptelement.rs
+++ b/src/components/script/dom/htmlscriptelement.rs
@@ -41,77 +41,99 @@ impl HTMLScriptElement {
     }
 }
 
-impl HTMLScriptElement {
-    pub fn Src(&self, abstract_self: &JSRef<HTMLScriptElement>) -> DOMString {
+pub trait HTMLScriptElementMethods {
+    fn Src(&self, abstract_self: &JSRef<HTMLScriptElement>) -> DOMString;
+    fn SetSrc(&mut self, _abstract_self: &JSRef<HTMLScriptElement>, _src: DOMString) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult;
+    fn Charset(&self) -> DOMString;
+    fn SetCharset(&mut self, _charset: DOMString) -> ErrorResult;
+    fn Async(&self) -> bool;
+    fn SetAsync(&self, _async: bool) -> ErrorResult;
+    fn Defer(&self) -> bool;
+    fn SetDefer(&self, _defer: bool) -> ErrorResult;
+    fn CrossOrigin(&self) -> DOMString;
+    fn SetCrossOrigin(&mut self, _cross_origin: DOMString) -> ErrorResult;
+    fn Text(&self) -> DOMString;
+    fn SetText(&mut self, _text: DOMString) -> ErrorResult;
+    fn Event(&self) -> DOMString;
+    fn SetEvent(&mut self, _event: DOMString) -> ErrorResult;
+    fn HtmlFor(&self) -> DOMString;
+    fn SetHtmlFor(&mut self, _html_for: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLScriptElementMethods for JSRef<'a, HTMLScriptElement> {
+    fn Src(&self, abstract_self: &JSRef<HTMLScriptElement>) -> DOMString {
         let element: &JSRef<Element> = ElementCast::from_ref(abstract_self);
         element.get_url_attribute("src")
     }
 
-    pub fn SetSrc(&mut self, _abstract_self: &JSRef<HTMLScriptElement>, _src: DOMString) -> ErrorResult {
+    fn SetSrc(&mut self, _abstract_self: &JSRef<HTMLScriptElement>, _src: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetType(&mut self, _type: DOMString) -> ErrorResult {
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Charset(&self) -> DOMString {
+    fn Charset(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCharset(&mut self, _charset: DOMString) -> ErrorResult {
+    fn SetCharset(&mut self, _charset: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Async(&self) -> bool {
+    fn Async(&self) -> bool {
         false
     }
 
-    pub fn SetAsync(&self, _async: bool) -> ErrorResult {
+    fn SetAsync(&self, _async: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Defer(&self) -> bool {
+    fn Defer(&self) -> bool {
         false
     }
 
-    pub fn SetDefer(&self, _defer: bool) -> ErrorResult {
+    fn SetDefer(&self, _defer: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn CrossOrigin(&self) -> DOMString {
+    fn CrossOrigin(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCrossOrigin(&mut self, _cross_origin: DOMString) -> ErrorResult {
+    fn SetCrossOrigin(&mut self, _cross_origin: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Text(&self) -> DOMString {
+    fn Text(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetText(&mut self, _text: DOMString) -> ErrorResult {
+    fn SetText(&mut self, _text: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Event(&self) -> DOMString {
+    fn Event(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetEvent(&mut self, _event: DOMString) -> ErrorResult {
+    fn SetEvent(&mut self, _event: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn HtmlFor(&self) -> DOMString {
+    fn HtmlFor(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHtmlFor(&mut self, _html_for: DOMString) -> ErrorResult {
+    fn SetHtmlFor(&mut self, _html_for: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlselectelement.rs b/src/components/script/dom/htmlselectelement.rs
index 666cb529774..6aa15a1e982 100644
--- a/src/components/script/dom/htmlselectelement.rs
+++ b/src/components/script/dom/htmlselectelement.rs
@@ -44,141 +44,180 @@ impl HTMLSelectElement {
     }
 }
 
-impl HTMLSelectElement {
-    pub fn Autofocus(&self) -> bool {
+pub trait HTMLSelectElementMethods {
+    fn Autofocus(&self) -> bool;
+    fn SetAutofocus(&mut self, _autofocus: bool) -> ErrorResult;
+    fn Disabled(&self) -> bool;
+    fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult;
+    fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>>;
+    fn Multiple(&self) -> bool;
+    fn SetMultiple(&mut self, _multiple: bool) -> ErrorResult;
+    fn Name(&self) -> DOMString;
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult;
+    fn Required(&self) -> bool;
+    fn SetRequired(&mut self, _multiple: bool) -> ErrorResult;
+    fn Size(&self) -> u32;
+    fn SetSize(&mut self, _size: u32) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn Length(&self) -> u32;
+    fn SetLength(&mut self, _length: u32) -> ErrorResult;
+    fn Item(&self, _index: u32) -> Option<Unrooted<Element>>;
+    fn NamedItem(&self, _name: DOMString) -> Option<Unrooted<HTMLOptionElement>>;
+    fn IndexedGetter(&self, _index: u32, _found: &mut bool) -> Option<Unrooted<Element>>;
+    fn IndexedSetter(&mut self, _index: u32, _option: Option<JSRef<HTMLOptionElement>>) -> ErrorResult;
+    fn Remove_(&self);
+    fn Remove(&self, _index: i32);
+    fn SelectedIndex(&self) -> i32;
+    fn SetSelectedIndex(&mut self, _index: i32) -> ErrorResult;
+    fn Value(&self) -> DOMString;
+    fn SetValue(&mut self, _value: DOMString);
+    fn WillValidate(&self) -> bool;
+    fn SetWillValidate(&mut self, _will_validate: bool);
+    fn Validity(&self) -> Unrooted<ValidityState>;
+    fn SetValidity(&mut self, _validity: JS<ValidityState>);
+    fn ValidationMessage(&self) -> DOMString;
+    fn SetValidationMessage(&mut self, _message: DOMString) -> ErrorResult;
+    fn CheckValidity(&self) -> bool;
+    fn SetCustomValidity(&mut self, _error: DOMString);
+    fn Add(&self, _element: HTMLOptionElementOrHTMLOptGroupElement, _before: Option<HTMLElementOrLong>) -> ErrorResult;
+}
+
+impl<'a> HTMLSelectElementMethods for JSRef<'a, HTMLSelectElement> {
+    fn Autofocus(&self) -> bool {
         false
     }
 
-    pub fn SetAutofocus(&mut self, _autofocus: bool) -> ErrorResult {
+    fn SetAutofocus(&mut self, _autofocus: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Disabled(&self) -> bool {
+    fn Disabled(&self) -> bool {
         false
     }
 
-    pub fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult {
+    fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>> {
+    fn GetForm(&self) -> Option<Unrooted<HTMLFormElement>> {
         None
     }
 
-    pub fn Multiple(&self) -> bool {
+    fn Multiple(&self) -> bool {
         false
     }
 
-    pub fn SetMultiple(&mut self, _multiple: bool) -> ErrorResult {
+    fn SetMultiple(&mut self, _multiple: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Name(&self) -> DOMString {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&mut self, _name: DOMString) -> ErrorResult {
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Required(&self) -> bool {
+    fn Required(&self) -> bool {
         false
     }
 
-    pub fn SetRequired(&mut self, _multiple: bool) -> ErrorResult {
+    fn SetRequired(&mut self, _multiple: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Size(&self) -> u32 {
+    fn Size(&self) -> u32 {
         0
     }
 
-    pub fn SetSize(&mut self, _size: u32) -> ErrorResult {
+    fn SetSize(&mut self, _size: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn Length(&self) -> u32 {
+    fn Length(&self) -> u32 {
         0
     }
 
-    pub fn SetLength(&mut self, _length: u32) -> ErrorResult {
+    fn SetLength(&mut self, _length: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Item(&self, _index: u32) -> Option<Unrooted<Element>> {
+    fn Item(&self, _index: u32) -> Option<Unrooted<Element>> {
         None
     }
 
-    pub fn NamedItem(&self, _name: DOMString) -> Option<Unrooted<HTMLOptionElement>> {
+    fn NamedItem(&self, _name: DOMString) -> Option<Unrooted<HTMLOptionElement>> {
         None
     }
 
-    pub fn IndexedGetter(&self, _index: u32, _found: &mut bool) -> Option<Unrooted<Element>> {
+    fn IndexedGetter(&self, _index: u32, _found: &mut bool) -> Option<Unrooted<Element>> {
         None
     }
 
-    pub fn IndexedSetter(&mut self, _index: u32, _option: Option<JSRef<HTMLOptionElement>>) -> ErrorResult {
+    fn IndexedSetter(&mut self, _index: u32, _option: Option<JSRef<HTMLOptionElement>>) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Remove_(&self) {
+    fn Remove_(&self) {
     }
 
-    pub fn Remove(&self, _index: i32) {
+    fn Remove(&self, _index: i32) {
     }
 
-    pub fn SelectedIndex(&self) -> i32 {
+    fn SelectedIndex(&self) -> i32 {
         0
     }
 
-    pub fn SetSelectedIndex(&mut self, _index: i32) -> ErrorResult {
+    fn SetSelectedIndex(&mut self, _index: i32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Value(&self) -> DOMString {
+    fn Value(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetValue(&mut self, _value: DOMString) {
+    fn SetValue(&mut self, _value: DOMString) {
     }
 
-    pub fn WillValidate(&self) -> bool {
+    fn WillValidate(&self) -> bool {
         false
     }
 
-    pub fn SetWillValidate(&mut self, _will_validate: bool) {
+    fn SetWillValidate(&mut self, _will_validate: bool) {
     }
 
-    pub fn Validity(&self) -> Unrooted<ValidityState> {
+    fn Validity(&self) -> Unrooted<ValidityState> {
         let roots = RootCollection::new();
         let doc = self.htmlelement.element.node.owner_doc().root(&roots);
         let window = doc.deref().window.root(&roots);
         ValidityState::new(&*window)
     }
 
-    pub fn SetValidity(&mut self, _validity: JS<ValidityState>) {
+    fn SetValidity(&mut self, _validity: JS<ValidityState>) {
     }
 
-    pub fn ValidationMessage(&self) -> DOMString {
+    fn ValidationMessage(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetValidationMessage(&mut self, _message: DOMString) -> ErrorResult {
+    fn SetValidationMessage(&mut self, _message: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn CheckValidity(&self) -> bool {
+    fn CheckValidity(&self) -> bool {
         true
     }
 
-    pub fn SetCustomValidity(&mut self, _error: DOMString) {
+    fn SetCustomValidity(&mut self, _error: DOMString) {
     }
 
-    pub fn Add(&self, _element: HTMLOptionElementOrHTMLOptGroupElement, _before: Option<HTMLElementOrLong>) -> ErrorResult {
+    fn Add(&self, _element: HTMLOptionElementOrHTMLOptGroupElement, _before: Option<HTMLElementOrLong>) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlsourceelement.rs b/src/components/script/dom/htmlsourceelement.rs
index ef7ec5c9108..76d7cb28bab 100644
--- a/src/components/script/dom/htmlsourceelement.rs
+++ b/src/components/script/dom/htmlsourceelement.rs
@@ -40,28 +40,38 @@ impl HTMLSourceElement {
     }
 }
 
-impl HTMLSourceElement {
-    pub fn Src(&self) -> DOMString {
+pub trait HTMLSourceElementMethods {
+    fn Src(&self) -> DOMString;
+    fn SetSrc(&mut self, _src: DOMString) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult;
+    fn Media(&self) -> DOMString;
+    fn SetMedia(&mut self, _media: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLSourceElementMethods for JSRef<'a, HTMLSourceElement> {
+    fn Src(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetSrc(&mut self, _src: DOMString) -> ErrorResult {
+    fn SetSrc(&mut self, _src: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetType(&mut self, _type: DOMString) -> ErrorResult {
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Media(&self) -> DOMString {
+    fn Media(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetMedia(&mut self, _media: DOMString) -> ErrorResult {
+    fn SetMedia(&mut self, _media: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlspanelement.rs b/src/components/script/dom/htmlspanelement.rs
index 3867fa591de..dac10e30b68 100644
--- a/src/components/script/dom/htmlspanelement.rs
+++ b/src/components/script/dom/htmlspanelement.rs
@@ -38,3 +38,6 @@ impl HTMLSpanElement {
         Node::reflect_node(~element, document, HTMLSpanElementBinding::Wrap)
     }
 }
+
+pub trait HTMLSpanElementMethods {
+}
diff --git a/src/components/script/dom/htmlstyleelement.rs b/src/components/script/dom/htmlstyleelement.rs
index ec2a997586b..aac38920342 100644
--- a/src/components/script/dom/htmlstyleelement.rs
+++ b/src/components/script/dom/htmlstyleelement.rs
@@ -10,7 +10,7 @@ use dom::document::Document;
 use dom::element::HTMLStyleElementTypeId;
 use dom::eventtarget::{EventTarget, NodeTargetTypeId};
 use dom::htmlelement::HTMLElement;
-use dom::node::{Node, ElementNodeTypeId, window_from_node};
+use dom::node::{Node, NodeMethods, ElementNodeTypeId, window_from_node};
 use dom::virtualmethods::VirtualMethods;
 use html::cssparse::parse_inline_css;
 use layout_interface::{AddStylesheetMsg, LayoutChan};
@@ -43,35 +43,46 @@ impl HTMLStyleElement {
     }
 }
 
-impl HTMLStyleElement {
-    pub fn Disabled(&self) -> bool {
+pub trait HTMLStyleElementMethods {
+    fn Disabled(&self) -> bool;
+    fn SetDisabled(&self, _disabled: bool);
+    fn Media(&self) -> DOMString;
+    fn SetMedia(&mut self, _media: DOMString) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult;
+    fn Scoped(&self) -> bool;
+    fn SetScoped(&self, _scoped: bool) -> ErrorResult;
+}
+
+impl<'a> HTMLStyleElementMethods for JSRef<'a, HTMLStyleElement> {
+    fn Disabled(&self) -> bool {
         false
     }
 
-    pub fn SetDisabled(&self, _disabled: bool) {
+    fn SetDisabled(&self, _disabled: bool) {
     }
 
-    pub fn Media(&self) -> DOMString {
+    fn Media(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetMedia(&mut self, _media: DOMString) -> ErrorResult {
+    fn SetMedia(&mut self, _media: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetType(&mut self, _type: DOMString) -> ErrorResult {
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Scoped(&self) -> bool {
+    fn Scoped(&self) -> bool {
         false
     }
 
-    pub fn SetScoped(&self, _scoped: bool) -> ErrorResult {
+    fn SetScoped(&self, _scoped: bool) -> ErrorResult {
         Ok(())
     }
 }
@@ -87,7 +98,7 @@ impl<'a> StyleElementHelpers for JSRef<'a, HTMLStyleElement> {
         let win = window_from_node(node).root(&roots);
         let url = win.get().page().get_url();
 
-        let data = node.get().GetTextContent(node).expect("Element.textContent must be a string");
+        let data = node.GetTextContent(node).expect("Element.textContent must be a string");
         let sheet = parse_inline_css(url, data);
         let LayoutChan(ref layout_chan) = *win.get().page().layout_chan;
         layout_chan.send(AddStylesheetMsg(sheet));
diff --git a/src/components/script/dom/htmltablecaptionelement.rs b/src/components/script/dom/htmltablecaptionelement.rs
index ba83cd93ae8..45f3d6ec079 100644
--- a/src/components/script/dom/htmltablecaptionelement.rs
+++ b/src/components/script/dom/htmltablecaptionelement.rs
@@ -40,12 +40,18 @@ impl HTMLTableCaptionElement {
     }
 }
 
-impl HTMLTableCaptionElement {
-    pub fn Align(&self) -> DOMString {
+pub trait HTMLTableCaptionElementMethods {
+    fn Align(&self) -> DOMString;
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLTableCaptionElementMethods for JSRef<'a, HTMLTableCaptionElement> {
+    fn Align(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmltablecellelement.rs b/src/components/script/dom/htmltablecellelement.rs
index b00c1d78fcd..47010ccbac7 100644
--- a/src/components/script/dom/htmltablecellelement.rs
+++ b/src/components/script/dom/htmltablecellelement.rs
@@ -3,7 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use dom::bindings::codegen::InheritTypes::HTMLTableCellElementDerived;
-use dom::bindings::js::JS;
+use dom::bindings::js::{JS, JSRef};
 use dom::bindings::error::ErrorResult;
 use dom::document::Document;
 use dom::element::{ElementTypeId, HTMLTableDataCellElementTypeId, HTMLTableHeaderCellElementTypeId};
@@ -35,125 +35,159 @@ impl HTMLTableCellElement {
     }
 }
 
-impl HTMLTableCellElement {
-    pub fn ColSpan(&self) -> u32 {
+pub trait HTMLTableCellElementMethods {
+    fn ColSpan(&self) -> u32;
+    fn SetColSpan(&self, _col_span: u32) -> ErrorResult;
+    fn RowSpan(&self) -> u32;
+    fn SetRowSpan(&self, _col_span: u32) -> ErrorResult;
+    fn Headers(&self) -> DOMString;
+    fn SetHeaders(&self, _headers: DOMString) -> ErrorResult;
+    fn CellIndex(&self) -> i32;
+    fn GetCellIndex(&self, _cell_index: i32) -> ErrorResult;
+    fn Abbr(&self) -> DOMString;
+    fn SetAbbr(&self, _abbr: DOMString) -> ErrorResult;
+    fn Scope(&self) -> DOMString;
+    fn SetScope(&self, _abbr: DOMString) -> ErrorResult;
+    fn Align(&self) -> DOMString;
+    fn SetAlign(&self, _align: DOMString) -> ErrorResult;
+    fn Axis(&self) -> DOMString;
+    fn SetAxis(&self, _axis: DOMString) -> ErrorResult;
+    fn Height(&self) -> DOMString;
+    fn SetHeight(&self, _height: DOMString) -> ErrorResult;
+    fn Width(&self) -> DOMString;
+    fn SetWidth(&self, _width: DOMString) -> ErrorResult;
+    fn Ch(&self) -> DOMString;
+    fn SetCh(&self, _ch: DOMString) -> ErrorResult;
+    fn ChOff(&self) -> DOMString;
+    fn SetChOff(&self, _ch_off: DOMString) -> ErrorResult;
+    fn NoWrap(&self) -> bool;
+    fn SetNoWrap(&self, _no_wrap: bool) -> ErrorResult;
+    fn VAlign(&self) -> DOMString;
+    fn SetVAlign(&self, _valign: DOMString) -> ErrorResult;
+    fn BgColor(&self) -> DOMString;
+    fn SetBgColor(&self, _bg_color: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLTableCellElementMethods for JSRef<'a, HTMLTableCellElement> {
+    fn ColSpan(&self) -> u32 {
         0
     }
 
-    pub fn SetColSpan(&self, _col_span: u32) -> ErrorResult {
+    fn SetColSpan(&self, _col_span: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn RowSpan(&self) -> u32 {
+    fn RowSpan(&self) -> u32 {
         0
     }
 
-    pub fn SetRowSpan(&self, _col_span: u32) -> ErrorResult {
+    fn SetRowSpan(&self, _col_span: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Headers(&self) -> DOMString {
+    fn Headers(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHeaders(&self, _headers: DOMString) -> ErrorResult {
+    fn SetHeaders(&self, _headers: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn CellIndex(&self) -> i32 {
+    fn CellIndex(&self) -> i32 {
         0
     }
 
-    pub fn GetCellIndex(&self, _cell_index: i32) -> ErrorResult {
+    fn GetCellIndex(&self, _cell_index: i32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Abbr(&self) -> DOMString {
+    fn Abbr(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAbbr(&self, _abbr: DOMString) -> ErrorResult {
+    fn SetAbbr(&self, _abbr: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Scope(&self) -> DOMString {
+    fn Scope(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetScope(&self, _abbr: DOMString) -> ErrorResult {
+    fn SetScope(&self, _abbr: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Align(&self) -> DOMString {
+    fn Align(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlign(&self, _align: DOMString) -> ErrorResult {
+    fn SetAlign(&self, _align: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Axis(&self) -> DOMString {
+    fn Axis(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAxis(&self, _axis: DOMString) -> ErrorResult {
+    fn SetAxis(&self, _axis: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Height(&self) -> DOMString {
+    fn Height(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHeight(&self, _height: DOMString) -> ErrorResult {
+    fn SetHeight(&self, _height: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Width(&self) -> DOMString {
+    fn Width(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetWidth(&self, _width: DOMString) -> ErrorResult {
+    fn SetWidth(&self, _width: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Ch(&self) -> DOMString {
+    fn Ch(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCh(&self, _ch: DOMString) -> ErrorResult {
+    fn SetCh(&self, _ch: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn ChOff(&self) -> DOMString {
+    fn ChOff(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetChOff(&self, _ch_off: DOMString) -> ErrorResult {
+    fn SetChOff(&self, _ch_off: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn NoWrap(&self) -> bool {
+    fn NoWrap(&self) -> bool {
         false
     }
 
-    pub fn SetNoWrap(&self, _no_wrap: bool) -> ErrorResult {
+    fn SetNoWrap(&self, _no_wrap: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn VAlign(&self) -> DOMString {
+    fn VAlign(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetVAlign(&self, _valign: DOMString) -> ErrorResult {
+    fn SetVAlign(&self, _valign: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn BgColor(&self) -> DOMString {
+    fn BgColor(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetBgColor(&self, _bg_color: DOMString) -> ErrorResult {
+    fn SetBgColor(&self, _bg_color: DOMString) -> ErrorResult {
         Ok(())
     }
 }
 
+
diff --git a/src/components/script/dom/htmltablecolelement.rs b/src/components/script/dom/htmltablecolelement.rs
index c8b8c74ad6b..97c85275ee9 100644
--- a/src/components/script/dom/htmltablecolelement.rs
+++ b/src/components/script/dom/htmltablecolelement.rs
@@ -40,52 +40,68 @@ impl HTMLTableColElement {
     }
 }
 
-impl HTMLTableColElement {
-    pub fn Span(&self) -> u32 {
+pub trait HTMLTableColElementMethods {
+    fn Span(&self) -> u32;
+    fn SetSpan(&mut self, _span: u32) -> ErrorResult;
+    fn Align(&self) -> DOMString;
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult;
+    fn Ch(&self) -> DOMString;
+    fn SetCh(&mut self, _ch: DOMString) -> ErrorResult;
+    fn ChOff(&self) -> DOMString;
+    fn SetChOff(&mut self, _ch_off: DOMString) -> ErrorResult;
+    fn VAlign(&self) -> DOMString;
+    fn SetVAlign(&mut self, _v_align: DOMString) -> ErrorResult;
+    fn Width(&self) -> DOMString;
+    fn SetWidth(&mut self, _width: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLTableColElementMethods for JSRef<'a, HTMLTableColElement> {
+    fn Span(&self) -> u32 {
         0
     }
 
-    pub fn SetSpan(&mut self, _span: u32) -> ErrorResult {
+    fn SetSpan(&mut self, _span: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Align(&self) -> DOMString {
+    fn Align(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Ch(&self) -> DOMString {
+    fn Ch(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCh(&mut self, _ch: DOMString) -> ErrorResult {
+    fn SetCh(&mut self, _ch: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn ChOff(&self) -> DOMString {
+    fn ChOff(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetChOff(&mut self, _ch_off: DOMString) -> ErrorResult {
+    fn SetChOff(&mut self, _ch_off: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn VAlign(&self) -> DOMString {
+    fn VAlign(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetVAlign(&mut self, _v_align: DOMString) -> ErrorResult {
+    fn SetVAlign(&mut self, _v_align: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Width(&self) -> DOMString {
+    fn Width(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetWidth(&mut self, _width: DOMString) -> ErrorResult {
+    fn SetWidth(&mut self, _width: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmltabledatacellelement.rs b/src/components/script/dom/htmltabledatacellelement.rs
index 830740127f0..359e2837744 100644
--- a/src/components/script/dom/htmltabledatacellelement.rs
+++ b/src/components/script/dom/htmltabledatacellelement.rs
@@ -38,3 +38,6 @@ impl HTMLTableDataCellElement {
         Node::reflect_node(~element, document, HTMLTableDataCellElementBinding::Wrap)
     }
 }
+
+pub trait HTMLTableDataCellElementMethods {
+}
diff --git a/src/components/script/dom/htmltableelement.rs b/src/components/script/dom/htmltableelement.rs
index 8150c68d3a6..6451e2d7276 100644
--- a/src/components/script/dom/htmltableelement.rs
+++ b/src/components/script/dom/htmltableelement.rs
@@ -40,99 +40,128 @@ impl HTMLTableElement {
     }
 }
 
-impl HTMLTableElement {
-    pub fn DeleteCaption(&self) {
+pub trait HTMLTableElementMethods {
+    fn DeleteCaption(&self);
+    fn DeleteTHead(&self);
+    fn DeleteTFoot(&self);
+    fn DeleteRow(&mut self, _index: i32) -> ErrorResult;
+    fn Sortable(&self) -> bool;
+    fn SetSortable(&self, _sortable: bool);
+    fn StopSorting(&self);
+    fn Align(&self) -> DOMString;
+    fn SetAlign(&self, _align: DOMString) -> ErrorResult;
+    fn Border(&self) -> DOMString;
+    fn SetBorder(&self, _border: DOMString) -> ErrorResult;
+    fn Frame(&self) -> DOMString;
+    fn SetFrame(&self, _frame: DOMString) -> ErrorResult;
+    fn Rules(&self) -> DOMString;
+    fn SetRules(&self, _rules: DOMString) -> ErrorResult;
+    fn Summary(&self) -> DOMString;
+    fn SetSummary(&self, _summary: DOMString) -> ErrorResult;
+    fn Width(&self) -> DOMString;
+    fn SetWidth(&self, _width: DOMString) -> ErrorResult;
+    fn BgColor(&self) -> DOMString;
+    fn SetBgColor(&self, _bg_color: DOMString) -> ErrorResult;
+    fn CellPadding(&self) -> DOMString;
+    fn SetCellPadding(&self, _cell_padding: DOMString) -> ErrorResult;
+    fn CellSpacing(&self) -> DOMString;
+    fn SetCellSpacing(&self, _cell_spacing: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLTableElementMethods for JSRef<'a, HTMLTableElement> {
+    fn DeleteCaption(&self) {
     }
 
-    pub fn DeleteTHead(&self) {
+    fn DeleteTHead(&self) {
     }
 
-    pub fn DeleteTFoot(&self) {
+    fn DeleteTFoot(&self) {
     }
 
-    pub fn DeleteRow(&mut self, _index: i32) -> ErrorResult {
+    fn DeleteRow(&mut self, _index: i32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Sortable(&self) -> bool {
+    fn Sortable(&self) -> bool {
         false
     }
 
-    pub fn SetSortable(&self, _sortable: bool) {
+    fn SetSortable(&self, _sortable: bool) {
     }
 
-    pub fn StopSorting(&self) {
+    fn StopSorting(&self) {
     }
 
-    pub fn Align(&self) -> DOMString {
+    fn Align(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlign(&self, _align: DOMString) -> ErrorResult {
+    fn SetAlign(&self, _align: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Border(&self) -> DOMString {
+    fn Border(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetBorder(&self, _border: DOMString) -> ErrorResult {
+    fn SetBorder(&self, _border: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Frame(&self) -> DOMString {
+    fn Frame(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetFrame(&self, _frame: DOMString) -> ErrorResult {
+    fn SetFrame(&self, _frame: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Rules(&self) -> DOMString {
+    fn Rules(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetRules(&self, _rules: DOMString) -> ErrorResult {
+    fn SetRules(&self, _rules: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Summary(&self) -> DOMString {
+    fn Summary(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetSummary(&self, _summary: DOMString) -> ErrorResult {
+    fn SetSummary(&self, _summary: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Width(&self) -> DOMString {
+    fn Width(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetWidth(&self, _width: DOMString) -> ErrorResult {
+    fn SetWidth(&self, _width: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn BgColor(&self) -> DOMString {
+    fn BgColor(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetBgColor(&self, _bg_color: DOMString) -> ErrorResult {
+    fn SetBgColor(&self, _bg_color: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn CellPadding(&self) -> DOMString {
+    fn CellPadding(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCellPadding(&self, _cell_padding: DOMString) -> ErrorResult {
+    fn SetCellPadding(&self, _cell_padding: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn CellSpacing(&self) -> DOMString {
+    fn CellSpacing(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCellSpacing(&self, _cell_spacing: DOMString) -> ErrorResult {
+    fn SetCellSpacing(&self, _cell_spacing: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmltableheadercellelement.rs b/src/components/script/dom/htmltableheadercellelement.rs
index 90dba152b44..ce1dc6a8241 100644
--- a/src/components/script/dom/htmltableheadercellelement.rs
+++ b/src/components/script/dom/htmltableheadercellelement.rs
@@ -38,3 +38,6 @@ impl HTMLTableHeaderCellElement {
         Node::reflect_node(~element, document, HTMLTableHeaderCellElementBinding::Wrap)
     }
 }
+
+pub trait HTMLTableHeaderCellElementMethods {
+}
diff --git a/src/components/script/dom/htmltablerowelement.rs b/src/components/script/dom/htmltablerowelement.rs
index 2b77faeadab..d7d05516798 100644
--- a/src/components/script/dom/htmltablerowelement.rs
+++ b/src/components/script/dom/htmltablerowelement.rs
@@ -40,64 +40,83 @@ impl HTMLTableRowElement {
     }
 }
 
-impl HTMLTableRowElement {
-    pub fn RowIndex(&self) -> i32 {
+pub trait HTMLTableRowElementMethods {
+    fn RowIndex(&self) -> i32;
+    fn GetRowIndex(&self) -> i32;
+    fn SectionRowIndex(&self) -> i32;
+    fn GetSectionRowIndex(&self) -> i32;
+    fn DeleteCell(&mut self, _index: i32) -> ErrorResult;
+    fn Align(&self) -> DOMString;
+    fn SetAlign(&self, _align: DOMString) -> ErrorResult;
+    fn Ch(&self) -> DOMString;
+    fn SetCh(&self, _ch: DOMString) -> ErrorResult;
+    fn ChOff(&self) -> DOMString;
+    fn SetChOff(&self, _ch_off: DOMString) -> ErrorResult;
+    fn VAlign(&self) -> DOMString;
+    fn SetVAlign(&self, _v_align: DOMString) -> ErrorResult;
+    fn BgColor(&self) -> DOMString;
+    fn SetBgColor(&self, _bg_color: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLTableRowElementMethods for JSRef<'a, HTMLTableRowElement> {
+    fn RowIndex(&self) -> i32 {
         0
     }
 
-    pub fn GetRowIndex(&self) -> i32 {
+    fn GetRowIndex(&self) -> i32 {
         0
     }
 
-    pub fn SectionRowIndex(&self) -> i32 {
+    fn SectionRowIndex(&self) -> i32 {
         0
     }
 
-    pub fn GetSectionRowIndex(&self) -> i32 {
+    fn GetSectionRowIndex(&self) -> i32 {
         0
     }
 
-    pub fn DeleteCell(&mut self, _index: i32) -> ErrorResult {
+    fn DeleteCell(&mut self, _index: i32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Align(&self) -> DOMString {
+    fn Align(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlign(&self, _align: DOMString) -> ErrorResult {
+    fn SetAlign(&self, _align: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Ch(&self) -> DOMString {
+    fn Ch(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCh(&self, _ch: DOMString) -> ErrorResult {
+    fn SetCh(&self, _ch: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn ChOff(&self) -> DOMString {
+    fn ChOff(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetChOff(&self, _ch_off: DOMString) -> ErrorResult {
+    fn SetChOff(&self, _ch_off: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn VAlign(&self) -> DOMString {
+    fn VAlign(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetVAlign(&self, _v_align: DOMString) -> ErrorResult {
+    fn SetVAlign(&self, _v_align: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn BgColor(&self) -> DOMString {
+    fn BgColor(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetBgColor(&self, _bg_color: DOMString) -> ErrorResult {
+    fn SetBgColor(&self, _bg_color: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmltablesectionelement.rs b/src/components/script/dom/htmltablesectionelement.rs
index b44aba6e9dc..62dd52e9758 100644
--- a/src/components/script/dom/htmltablesectionelement.rs
+++ b/src/components/script/dom/htmltablesectionelement.rs
@@ -40,40 +40,53 @@ impl HTMLTableSectionElement {
     }
 }
 
-impl HTMLTableSectionElement {
-    pub fn DeleteRow(&mut self, _index: i32) -> ErrorResult {
+pub trait HTMLTableSectionElementMethods {
+    fn DeleteRow(&mut self, _index: i32) -> ErrorResult;
+    fn Align(&self) -> DOMString;
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult;
+    fn Ch(&self) -> DOMString;
+    fn SetCh(&mut self, _ch: DOMString) -> ErrorResult;
+    fn ChOff(&self) -> DOMString;
+    fn SetChOff(&mut self, _ch_off: DOMString) -> ErrorResult;
+    fn VAlign(&self) -> DOMString;
+    fn SetVAlign(&mut self, _v_align: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLTableSectionElementMethods for JSRef<'a, HTMLTableSectionElement> {
+    fn DeleteRow(&mut self, _index: i32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Align(&self) -> DOMString {
+    fn Align(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
+    fn SetAlign(&mut self, _align: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Ch(&self) -> DOMString {
+    fn Ch(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetCh(&mut self, _ch: DOMString) -> ErrorResult {
+    fn SetCh(&mut self, _ch: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn ChOff(&self) -> DOMString {
+    fn ChOff(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetChOff(&mut self, _ch_off: DOMString) -> ErrorResult {
+    fn SetChOff(&mut self, _ch_off: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn VAlign(&self) -> DOMString {
+    fn VAlign(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetVAlign(&mut self, _v_align: DOMString) -> ErrorResult {
+    fn SetVAlign(&mut self, _v_align: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmltemplateelement.rs b/src/components/script/dom/htmltemplateelement.rs
index f645e1815d3..245ce104439 100644
--- a/src/components/script/dom/htmltemplateelement.rs
+++ b/src/components/script/dom/htmltemplateelement.rs
@@ -38,3 +38,6 @@ impl HTMLTemplateElement {
         Node::reflect_node(~element, document, HTMLTemplateElementBinding::Wrap)
     }
 }
+
+pub trait HTMLTemplateElementMethods {
+}
diff --git a/src/components/script/dom/htmltextareaelement.rs b/src/components/script/dom/htmltextareaelement.rs
index 4955085c751..2005a6384e4 100644
--- a/src/components/script/dom/htmltextareaelement.rs
+++ b/src/components/script/dom/htmltextareaelement.rs
@@ -40,163 +40,208 @@ impl HTMLTextAreaElement {
     }
 }
 
-impl HTMLTextAreaElement {
-    pub fn Autofocus(&self) -> bool {
+pub trait HTMLTextAreaElementMethods {
+    fn Autofocus(&self) -> bool;
+    fn SetAutofocus(&mut self, _autofocus: bool) -> ErrorResult;
+    fn Cols(&self) -> u32;
+    fn SetCols(&self, _cols: u32) -> ErrorResult;
+    fn Disabled(&self) -> bool;
+    fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult;
+    fn MaxLength(&self) -> i32;
+    fn SetMaxLength(&self, _max_length: i32) -> ErrorResult;
+    fn Name(&self) -> DOMString;
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult;
+    fn Placeholder(&self) -> DOMString;
+    fn SetPlaceholder(&mut self, _placeholder: DOMString) -> ErrorResult;
+    fn ReadOnly(&self) -> bool;
+    fn SetReadOnly(&mut self, _read_only: bool) -> ErrorResult;
+    fn Required(&self) -> bool;
+    fn SetRequired(&mut self, _required: bool) -> ErrorResult;
+    fn Rows(&self) -> u32;
+    fn SetRows(&self, _rows: u32) -> ErrorResult;
+    fn Wrap(&self) -> DOMString;
+    fn SetWrap(&mut self, _wrap: DOMString) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn SetType(&mut self, _type: DOMString);
+    fn DefaultValue(&self) -> DOMString;
+    fn SetDefaultValue(&mut self, _default_value: DOMString) -> ErrorResult;
+    fn Value(&self) -> DOMString;
+    fn SetValue(&mut self, _value: DOMString);
+    fn TextLength(&self) -> u32;
+    fn SetTextLength(&self, _text_length: u32) -> ErrorResult;
+    fn WillValidate(&self) -> bool;
+    fn SetWillValidate(&mut self, _will_validate: bool) -> ErrorResult;
+    fn ValidationMessage(&self) -> DOMString;
+    fn CheckValidity(&self) -> bool;
+    fn SetCustomValidity(&self, _error: DOMString);
+    fn Select(&self);
+    fn GetSelectionStart(&self) -> Fallible<u32>;
+    fn SetSelectionStart(&self, _selection_start: u32) -> ErrorResult;
+    fn GetSelectionEnd(&self) -> Fallible<u32>;
+    fn SetSelectionEnd(&self, _selection_end: u32) -> ErrorResult;
+    fn GetSelectionDirection(&self) -> Fallible<DOMString>;
+    fn SetSelectionDirection(&self, _selection_direction: DOMString) -> ErrorResult;
+    fn SetRangeText(&self, _replacement: DOMString);
+}
+
+impl<'a> HTMLTextAreaElementMethods for JSRef<'a, HTMLTextAreaElement> {
+    fn Autofocus(&self) -> bool {
         false
     }
 
-    pub fn SetAutofocus(&mut self, _autofocus: bool) -> ErrorResult {
+    fn SetAutofocus(&mut self, _autofocus: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Cols(&self) -> u32 {
+    fn Cols(&self) -> u32 {
         0
     }
 
-    pub fn SetCols(&self, _cols: u32) -> ErrorResult {
+    fn SetCols(&self, _cols: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Disabled(&self) -> bool {
+    fn Disabled(&self) -> bool {
         false
     }
 
-    pub fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult {
+    fn SetDisabled(&mut self, _disabled: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn MaxLength(&self) -> i32 {
+    fn MaxLength(&self) -> i32 {
         0
     }
 
-    pub fn SetMaxLength(&self, _max_length: i32) -> ErrorResult {
+    fn SetMaxLength(&self, _max_length: i32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Name(&self) -> DOMString {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&mut self, _name: DOMString) -> ErrorResult {
+    fn SetName(&mut self, _name: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Placeholder(&self) -> DOMString {
+    fn Placeholder(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetPlaceholder(&mut self, _placeholder: DOMString) -> ErrorResult {
+    fn SetPlaceholder(&mut self, _placeholder: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn ReadOnly(&self) -> bool {
+    fn ReadOnly(&self) -> bool {
         false
     }
 
-    pub fn SetReadOnly(&mut self, _read_only: bool) -> ErrorResult {
+    fn SetReadOnly(&mut self, _read_only: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Required(&self) -> bool {
+    fn Required(&self) -> bool {
         false
     }
 
-    pub fn SetRequired(&mut self, _required: bool) -> ErrorResult {
+    fn SetRequired(&mut self, _required: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Rows(&self) -> u32 {
+    fn Rows(&self) -> u32 {
         0
     }
 
-    pub fn SetRows(&self, _rows: u32) -> ErrorResult {
+    fn SetRows(&self, _rows: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Wrap(&self) -> DOMString {
+    fn Wrap(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetWrap(&mut self, _wrap: DOMString) -> ErrorResult {
+    fn SetWrap(&mut self, _wrap: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetType(&mut self, _type: DOMString) {
+    fn SetType(&mut self, _type: DOMString) {
     }
 
-    pub fn DefaultValue(&self) -> DOMString {
+    fn DefaultValue(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetDefaultValue(&mut self, _default_value: DOMString) -> ErrorResult {
+    fn SetDefaultValue(&mut self, _default_value: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Value(&self) -> DOMString {
+    fn Value(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetValue(&mut self, _value: DOMString) {
+    fn SetValue(&mut self, _value: DOMString) {
     }
 
-    pub fn TextLength(&self) -> u32 {
+    fn TextLength(&self) -> u32 {
         0
     }
 
-    pub fn SetTextLength(&self, _text_length: u32) -> ErrorResult {
+    fn SetTextLength(&self, _text_length: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn WillValidate(&self) -> bool {
+    fn WillValidate(&self) -> bool {
         false
     }
 
-    pub fn SetWillValidate(&mut self, _will_validate: bool) -> ErrorResult {
+    fn SetWillValidate(&mut self, _will_validate: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn ValidationMessage(&self) -> DOMString {
+    fn ValidationMessage(&self) -> DOMString {
         ~""
     }
 
-    pub fn CheckValidity(&self) -> bool {
+    fn CheckValidity(&self) -> bool {
         false
     }
 
-    pub fn SetCustomValidity(&self, _error: DOMString) {
+    fn SetCustomValidity(&self, _error: DOMString) {
     }
 
-    pub fn Select(&self) {
+    fn Select(&self) {
     }
 
-    pub fn GetSelectionStart(&self) -> Fallible<u32> {
+    fn GetSelectionStart(&self) -> Fallible<u32> {
         Ok(0)
     }
 
-    pub fn SetSelectionStart(&self, _selection_start: u32) -> ErrorResult {
+    fn SetSelectionStart(&self, _selection_start: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetSelectionEnd(&self) -> Fallible<u32> {
+    fn GetSelectionEnd(&self) -> Fallible<u32> {
         Ok(0)
     }
 
-    pub fn SetSelectionEnd(&self, _selection_end: u32) -> ErrorResult {
+    fn SetSelectionEnd(&self, _selection_end: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn GetSelectionDirection(&self) -> Fallible<DOMString> {
+    fn GetSelectionDirection(&self) -> Fallible<DOMString> {
         Ok(~"")
     }
 
-    pub fn SetSelectionDirection(&self, _selection_direction: DOMString) -> ErrorResult {
+    fn SetSelectionDirection(&self, _selection_direction: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn SetRangeText(&self, _replacement: DOMString) {
+    fn SetRangeText(&self, _replacement: DOMString) {
     }
 }
+
diff --git a/src/components/script/dom/htmltimeelement.rs b/src/components/script/dom/htmltimeelement.rs
index df74323fc01..dd2a9b28f97 100644
--- a/src/components/script/dom/htmltimeelement.rs
+++ b/src/components/script/dom/htmltimeelement.rs
@@ -40,12 +40,18 @@ impl HTMLTimeElement {
     }
 }
 
-impl HTMLTimeElement {
-    pub fn DateTime(&self) -> DOMString {
+pub trait HTMLTimeElementMethods {
+    fn DateTime(&self) -> DOMString;
+    fn SetDateTime(&mut self, _dateTime: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLTimeElementMethods for JSRef<'a, HTMLTimeElement> {
+    fn DateTime(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetDateTime(&mut self, _dateTime: DOMString) -> ErrorResult {
+    fn SetDateTime(&mut self, _dateTime: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmltitleelement.rs b/src/components/script/dom/htmltitleelement.rs
index 2c1af9b5291..c78b26ee4cb 100644
--- a/src/components/script/dom/htmltitleelement.rs
+++ b/src/components/script/dom/htmltitleelement.rs
@@ -40,12 +40,18 @@ impl HTMLTitleElement {
     }
 }
 
-impl HTMLTitleElement {
-    pub fn Text(&self) -> DOMString {
+pub trait HTMLTitleElementMethods {
+    fn Text(&self) -> DOMString;
+    fn SetText(&mut self, _text: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLTitleElementMethods for JSRef<'a, HTMLTitleElement> {
+    fn Text(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetText(&mut self, _text: DOMString) -> ErrorResult {
+    fn SetText(&mut self, _text: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmltrackelement.rs b/src/components/script/dom/htmltrackelement.rs
index 408da82d53b..db25ab17130 100644
--- a/src/components/script/dom/htmltrackelement.rs
+++ b/src/components/script/dom/htmltrackelement.rs
@@ -40,48 +40,63 @@ impl HTMLTrackElement {
     }
 }
 
-impl HTMLTrackElement {
-    pub fn Kind(&self) -> DOMString {
+pub trait HTMLTrackElementMethods {
+    fn Kind(&self) -> DOMString;
+    fn SetKind(&mut self, _kind: DOMString) -> ErrorResult;
+    fn Src(&self) -> DOMString;
+    fn SetSrc(&mut self, _src: DOMString) -> ErrorResult;
+    fn Srclang(&self) -> DOMString;
+    fn SetSrclang(&mut self, _srclang: DOMString) -> ErrorResult;
+    fn Label(&self) -> DOMString;
+    fn SetLabel(&mut self, _label: DOMString) -> ErrorResult;
+    fn Default(&self) -> bool;
+    fn SetDefault(&mut self, _default: bool) -> ErrorResult;
+    fn ReadyState(&self) -> u16;
+}
+
+impl<'a> HTMLTrackElementMethods for JSRef<'a, HTMLTrackElement> {
+    fn Kind(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetKind(&mut self, _kind: DOMString) -> ErrorResult {
+    fn SetKind(&mut self, _kind: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Src(&self) -> DOMString {
+    fn Src(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetSrc(&mut self, _src: DOMString) -> ErrorResult {
+    fn SetSrc(&mut self, _src: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Srclang(&self) -> DOMString {
+    fn Srclang(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetSrclang(&mut self, _srclang: DOMString) -> ErrorResult {
+    fn SetSrclang(&mut self, _srclang: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Label(&self) -> DOMString {
+    fn Label(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetLabel(&mut self, _label: DOMString) -> ErrorResult {
+    fn SetLabel(&mut self, _label: DOMString) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Default(&self) -> bool {
+    fn Default(&self) -> bool {
         false
     }
 
-    pub fn SetDefault(&mut self, _default: bool) -> ErrorResult {
+    fn SetDefault(&mut self, _default: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn ReadyState(&self) -> u16 {
+    fn ReadyState(&self) -> u16 {
         0
     }
 }
+
diff --git a/src/components/script/dom/htmlulistelement.rs b/src/components/script/dom/htmlulistelement.rs
index c2661a5ee46..bed085157ce 100644
--- a/src/components/script/dom/htmlulistelement.rs
+++ b/src/components/script/dom/htmlulistelement.rs
@@ -40,20 +40,28 @@ impl HTMLUListElement {
     }
 }
 
-impl HTMLUListElement {
-    pub fn Compact(&self) -> bool {
+pub trait HTMLUListElementMethods {
+    fn Compact(&self) -> bool;
+    fn SetCompact(&mut self, _compact: bool) -> ErrorResult;
+    fn Type(&self) -> DOMString;
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLUListElementMethods for JSRef<'a, HTMLUListElement> {
+    fn Compact(&self) -> bool {
         false
     }
 
-    pub fn SetCompact(&mut self, _compact: bool) -> ErrorResult {
+    fn SetCompact(&mut self, _compact: bool) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Type(&self) -> DOMString {
+    fn Type(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetType(&mut self, _type: DOMString) -> ErrorResult {
+    fn SetType(&mut self, _type: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/htmlunknownelement.rs b/src/components/script/dom/htmlunknownelement.rs
index da68e0c51bf..da14d35b69f 100644
--- a/src/components/script/dom/htmlunknownelement.rs
+++ b/src/components/script/dom/htmlunknownelement.rs
@@ -38,3 +38,6 @@ impl HTMLUnknownElement {
         Node::reflect_node(~element, document, HTMLUnknownElementBinding::Wrap)
     }
 }
+
+pub trait HTMLUnknownElementMethods {
+}
diff --git a/src/components/script/dom/htmlvideoelement.rs b/src/components/script/dom/htmlvideoelement.rs
index aba9c3c3436..60e9d6a09cf 100644
--- a/src/components/script/dom/htmlvideoelement.rs
+++ b/src/components/script/dom/htmlvideoelement.rs
@@ -40,36 +40,48 @@ impl HTMLVideoElement {
     }
 }
 
-impl HTMLVideoElement {
-    pub fn Width(&self) -> u32 {
+pub trait HTMLVideoElementMethods {
+    fn Width(&self) -> u32;
+    fn SetWidth(&mut self, _width: u32) -> ErrorResult;
+    fn Height(&self) -> u32;
+    fn SetHeight(&mut self, _height: u32) -> ErrorResult;
+    fn VideoWidth(&self) -> u32;
+    fn VideoHeight(&self) -> u32;
+    fn Poster(&self) -> DOMString;
+    fn SetPoster(&mut self, _poster: DOMString) -> ErrorResult;
+}
+
+impl<'a> HTMLVideoElementMethods for JSRef<'a, HTMLVideoElement> {
+    fn Width(&self) -> u32 {
         0
     }
 
-    pub fn SetWidth(&mut self, _width: u32) -> ErrorResult {
+    fn SetWidth(&mut self, _width: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn Height(&self) -> u32 {
+    fn Height(&self) -> u32 {
         0
     }
 
-    pub fn SetHeight(&mut self, _height: u32) -> ErrorResult {
+    fn SetHeight(&mut self, _height: u32) -> ErrorResult {
         Ok(())
     }
 
-    pub fn VideoWidth(&self) -> u32 {
+    fn VideoWidth(&self) -> u32 {
         0
     }
 
-    pub fn VideoHeight(&self) -> u32 {
+    fn VideoHeight(&self) -> u32 {
         0
     }
 
-    pub fn Poster(&self) -> DOMString {
+    fn Poster(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetPoster(&mut self, _poster: DOMString) -> ErrorResult {
+    fn SetPoster(&mut self, _poster: DOMString) -> ErrorResult {
         Ok(())
     }
 }
+
diff --git a/src/components/script/dom/location.rs b/src/components/script/dom/location.rs
index 762da0a383b..4a28e1c449d 100644
--- a/src/components/script/dom/location.rs
+++ b/src/components/script/dom/location.rs
@@ -34,104 +34,134 @@ impl Location {
                            window,
                            LocationBinding::Wrap)
     }
+}
 
-    pub fn Assign(&self, _url: DOMString) {
+pub trait LocationMethods {
+    fn Assign(&self, _url: DOMString);
+    fn Replace(&self, _url: DOMString);
+    fn Reload(&self);
+    fn Href(&self) -> DOMString;
+    fn SetHref(&self, _href: DOMString) -> Fallible<()>;
+    fn Origin(&self) -> DOMString;
+    fn Protocol(&self) -> DOMString;
+    fn SetProtocol(&self, _protocol: DOMString);
+    fn Username(&self) -> DOMString;
+    fn SetUsername(&self, _username: DOMString);
+    fn Password(&self) -> DOMString;
+    fn SetPassword(&self, _password: DOMString);
+    fn Host(&self) -> DOMString;
+    fn SetHost(&self, _host: DOMString);
+    fn Hostname(&self) -> DOMString;
+    fn SetHostname(&self, _hostname: DOMString);
+    fn Port(&self) -> DOMString;
+    fn SetPort(&self, _port: DOMString);
+    fn Pathname(&self) -> DOMString;
+    fn SetPathname(&self, _pathname: DOMString);
+    fn Search(&self) -> DOMString;
+    fn SetSearch(&self, _search: DOMString);
+    fn Hash(&self) -> DOMString;
+    fn SetHash(&self, _hash: DOMString);
+}
+
+impl<'a> LocationMethods for JSRef<'a, Location> {
+    fn Assign(&self, _url: DOMString) {
 
     }
 
-    pub fn Replace(&self, _url: DOMString) {
+    fn Replace(&self, _url: DOMString) {
 
     }
 
-    pub fn Reload(&self) {
+    fn Reload(&self) {
 
     }
 
-    pub fn Href(&self) -> DOMString {
+    fn Href(&self) -> DOMString {
         self.page.get_url().to_str()
     }
 
-    pub fn SetHref(&self, _href: DOMString) -> Fallible<()> {
+    fn SetHref(&self, _href: DOMString) -> Fallible<()> {
         Ok(())
     }
 
-    pub fn Origin(&self) -> DOMString {
+    fn Origin(&self) -> DOMString {
         ~""
     }
 
-    pub fn Protocol(&self) -> DOMString {
+    fn Protocol(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetProtocol(&self, _protocol: DOMString) {
+    fn SetProtocol(&self, _protocol: DOMString) {
 
     }
 
-    pub fn Username(&self) -> DOMString {
+    fn Username(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetUsername(&self, _username: DOMString) {
+    fn SetUsername(&self, _username: DOMString) {
 
     }
 
-    pub fn Password(&self) -> DOMString {
+    fn Password(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetPassword(&self, _password: DOMString) {
+    fn SetPassword(&self, _password: DOMString) {
 
     }
 
-    pub fn Host(&self) -> DOMString {
+    fn Host(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHost(&self, _host: DOMString) {
+    fn SetHost(&self, _host: DOMString) {
 
     }
 
-    pub fn Hostname(&self) -> DOMString {
+    fn Hostname(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHostname(&self, _hostname: DOMString) {
+    fn SetHostname(&self, _hostname: DOMString) {
 
     }
 
-    pub fn Port(&self) -> DOMString {
+    fn Port(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetPort(&self, _port: DOMString) {
+    fn SetPort(&self, _port: DOMString) {
 
     }
 
-    pub fn Pathname(&self) -> DOMString {
+    fn Pathname(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetPathname(&self, _pathname: DOMString) {
+    fn SetPathname(&self, _pathname: DOMString) {
 
     }
 
-    pub fn Search(&self) -> DOMString {
+    fn Search(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetSearch(&self, _search: DOMString) {
+    fn SetSearch(&self, _search: DOMString) {
 
     }
 
-    pub fn Hash(&self) -> DOMString {
+    fn Hash(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetHash(&self, _hash: DOMString) {
+    fn SetHash(&self, _hash: DOMString) {
 
     }
 }
 
+
 impl Reflectable for Location {
     fn reflector<'a>(&'a self) -> &'a Reflector {
         &self.reflector_
diff --git a/src/components/script/dom/mouseevent.rs b/src/components/script/dom/mouseevent.rs
index b771b1b091c..fbfc9cf783d 100644
--- a/src/components/script/dom/mouseevent.rs
+++ b/src/components/script/dom/mouseevent.rs
@@ -3,13 +3,13 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use dom::bindings::codegen::BindingDeclarations::MouseEventBinding;
-use dom::bindings::codegen::InheritTypes::MouseEventDerived;
+use dom::bindings::codegen::InheritTypes::{UIEventCast, MouseEventDerived};
 use dom::bindings::js::{JS, JSRef, RootCollection, RootedReference, Unrooted};
 use dom::bindings::error::Fallible;
 use dom::bindings::utils::{Reflectable, Reflector, reflect_dom_object};
 use dom::event::{Event, MouseEventTypeId};
 use dom::eventtarget::EventTarget;
-use dom::uievent::UIEvent;
+use dom::uievent::{UIEvent, UIEventMethods};
 use dom::window::Window;
 use servo_util::str::DOMString;
 
@@ -64,81 +64,117 @@ impl MouseEvent {
         let mut ev = MouseEvent::new(owner).root(&roots);
         let view = init.view.as_ref().map(|view| view.root(&roots));
         let related_target = init.relatedTarget.as_ref().map(|relatedTarget| relatedTarget.root(&roots));
-        ev.get_mut().InitMouseEvent(type_, init.bubbles, init.cancelable, view.root_ref(),
-                                      init.detail, init.screenX, init.screenY,
-                                      init.clientX, init.clientY, init.ctrlKey,
-                                      init.altKey, init.shiftKey, init.metaKey,
-                                      init.button, related_target.root_ref());
+        ev.InitMouseEvent(type_, init.bubbles, init.cancelable, view.root_ref(),
+                          init.detail, init.screenX, init.screenY,
+                          init.clientX, init.clientY, init.ctrlKey,
+                          init.altKey, init.shiftKey, init.metaKey,
+                          init.button, related_target.root_ref());
         Ok(Unrooted::new_rooted(&*ev))
     }
+}
 
-    pub fn ScreenX(&self) -> i32 {
+pub trait MouseEventMethods {
+    fn ScreenX(&self) -> i32;
+    fn ScreenY(&self) -> i32;
+    fn ClientX(&self) -> i32;
+    fn ClientY(&self) -> i32;
+    fn CtrlKey(&self) -> bool;
+    fn ShiftKey(&self) -> bool;
+    fn AltKey(&self) -> bool;
+    fn MetaKey(&self) -> bool;
+    fn Button(&self) -> u16;
+    fn Buttons(&self)-> u16;
+    fn GetRelatedTarget(&self) -> Option<Unrooted<EventTarget>>;
+    fn GetModifierState(&self, _keyArg: DOMString) -> bool;
+    fn InitMouseEvent(&mut self,
+                      typeArg: DOMString,
+                      canBubbleArg: bool,
+                      cancelableArg: bool,
+                      viewArg: Option<JSRef<Window>>,
+                      detailArg: i32,
+                      screenXArg: i32,
+                      screenYArg: i32,
+                      clientXArg: i32,
+                      clientYArg: i32,
+                      ctrlKeyArg: bool,
+                      altKeyArg: bool,
+                      shiftKeyArg: bool,
+                      metaKeyArg: bool,
+                      buttonArg: u16,
+                      relatedTargetArg: Option<JSRef<EventTarget>>);
+}
+
+impl<'a> MouseEventMethods for JSRef<'a, MouseEvent> {
+    fn ScreenX(&self) -> i32 {
         self.screen_x
     }
 
-    pub fn ScreenY(&self) -> i32 {
+    fn ScreenY(&self) -> i32 {
         self.screen_y
     }
 
-    pub fn ClientX(&self) -> i32 {
+    fn ClientX(&self) -> i32 {
         self.client_x
     }
 
-    pub fn ClientY(&self) -> i32 {
+    fn ClientY(&self) -> i32 {
         self.client_y
     }
 
-    pub fn CtrlKey(&self) -> bool {
+    fn CtrlKey(&self) -> bool {
         self.ctrl_key
     }
 
-    pub fn ShiftKey(&self) -> bool {
+    fn ShiftKey(&self) -> bool {
         self.shift_key
     }
 
-    pub fn AltKey(&self) -> bool {
+    fn AltKey(&self) -> bool {
         self.alt_key
     }
 
-    pub fn MetaKey(&self) -> bool {
+    fn MetaKey(&self) -> bool {
         self.meta_key
     }
 
-    pub fn Button(&self) -> u16 {
+    fn Button(&self) -> u16 {
         self.button
     }
 
-    pub fn Buttons(&self)-> u16 {
+    fn Buttons(&self)-> u16 {
         //TODO
         0
     }
 
-    pub fn GetRelatedTarget(&self) -> Option<Unrooted<EventTarget>> {
+    fn GetRelatedTarget(&self) -> Option<Unrooted<EventTarget>> {
         self.related_target.clone().map(|target| Unrooted::new(target))
     }
 
-    pub fn GetModifierState(&self, _keyArg: DOMString) -> bool {
+    fn GetModifierState(&self, _keyArg: DOMString) -> bool {
         //TODO
         false
     }
 
-    pub fn InitMouseEvent(&mut self,
-                          typeArg: DOMString,
-                          canBubbleArg: bool,
-                          cancelableArg: bool,
-                          viewArg: Option<JSRef<Window>>,
-                          detailArg: i32,
-                          screenXArg: i32,
-                          screenYArg: i32,
-                          clientXArg: i32,
-                          clientYArg: i32,
-                          ctrlKeyArg: bool,
-                          altKeyArg: bool,
-                          shiftKeyArg: bool,
-                          metaKeyArg: bool,
-                          buttonArg: u16,
-                          relatedTargetArg: Option<JSRef<EventTarget>>) {
-        self.mouseevent.InitUIEvent(typeArg, canBubbleArg, cancelableArg, viewArg, detailArg);
+    fn InitMouseEvent(&mut self,
+                      typeArg: DOMString,
+                      canBubbleArg: bool,
+                      cancelableArg: bool,
+                      viewArg: Option<JSRef<Window>>,
+                      detailArg: i32,
+                      screenXArg: i32,
+                      screenYArg: i32,
+                      clientXArg: i32,
+                      clientYArg: i32,
+                      ctrlKeyArg: bool,
+                      altKeyArg: bool,
+                      shiftKeyArg: bool,
+                      metaKeyArg: bool,
+                      buttonArg: u16,
+                      relatedTargetArg: Option<JSRef<EventTarget>>) {
+        {
+            let uievent: &mut JSRef<UIEvent> = UIEventCast::from_mut_ref(self);
+            uievent.InitUIEvent(typeArg, canBubbleArg, cancelableArg, viewArg, detailArg);
+        }
         self.screen_x = screenXArg;
         self.screen_y = screenYArg;
         self.client_x = clientXArg;
@@ -152,6 +188,7 @@ impl MouseEvent {
     }
 }
 
+
 impl Reflectable for MouseEvent {
     fn reflector<'a>(&'a self) -> &'a Reflector {
         self.mouseevent.reflector()
diff --git a/src/components/script/dom/navigator.rs b/src/components/script/dom/navigator.rs
index 494175cb6b8..9e54bffb0c1 100644
--- a/src/components/script/dom/navigator.rs
+++ b/src/components/script/dom/navigator.rs
@@ -26,72 +26,94 @@ impl Navigator {
                            window,
                            NavigatorBinding::Wrap)
     }
+}
 
-    pub fn DoNotTrack(&self) -> DOMString {
+pub trait NavigatorMethods {
+    fn DoNotTrack(&self) -> DOMString;
+    fn Vendor(&self) -> DOMString;
+    fn VendorSub(&self) -> DOMString;
+    fn Product(&self) -> DOMString;
+    fn ProductSub(&self) -> DOMString;
+    fn CookieEnabled(&self) -> bool;
+    fn GetBuildID(&self) -> Fallible<DOMString>;
+    fn JavaEnabled(&self) -> Fallible<bool>;
+    fn TaintEnabled(&self) -> bool;
+    fn AppName(&self) -> DOMString;
+    fn GetAppCodeName(&self) -> Fallible<DOMString>;
+    fn GetAppVersion(&self) -> Fallible<DOMString>;
+    fn GetPlatform(&self) -> Fallible<DOMString>;
+    fn GetUserAgent(&self) -> Fallible<DOMString>;
+    fn GetLanguage(&self) -> Option<DOMString>;
+    fn OnLine(&self) -> bool;
+}
+
+impl<'a> NavigatorMethods for JSRef<'a, Navigator> {
+    fn DoNotTrack(&self) -> DOMString {
         ~"unspecified"
     }
 
-    pub fn Vendor(&self) -> DOMString {
+    fn Vendor(&self) -> DOMString {
         ~"" // Like Gecko
     }
 
-    pub fn VendorSub(&self) -> DOMString {
+    fn VendorSub(&self) -> DOMString {
         ~"" // Like Gecko
     }
 
-    pub fn Product(&self) -> DOMString {
+    fn Product(&self) -> DOMString {
         ~"Gecko"
     }
 
-    pub fn ProductSub(&self) -> DOMString {
+    fn ProductSub(&self) -> DOMString {
         ~""
     }
 
-    pub fn CookieEnabled(&self) -> bool {
+    fn CookieEnabled(&self) -> bool {
         false
     }
 
-    pub fn GetBuildID(&self) -> Fallible<DOMString> {
+    fn GetBuildID(&self) -> Fallible<DOMString> {
         Ok(~"")
     }
 
-    pub fn JavaEnabled(&self) -> Fallible<bool> {
+    fn JavaEnabled(&self) -> Fallible<bool> {
         Ok(false)
     }
 
-    pub fn TaintEnabled(&self) -> bool {
+    fn TaintEnabled(&self) -> bool {
         false
     }
 
-    pub fn AppName(&self) -> DOMString {
+    fn AppName(&self) -> DOMString {
         ~"Netscape" // Like Gecko/Webkit
     }
 
-    pub fn GetAppCodeName(&self) -> Fallible<DOMString> {
+    fn GetAppCodeName(&self) -> Fallible<DOMString> {
         Ok(~"Mozilla") // Like Gecko/Webkit
     }
 
-    pub fn GetAppVersion(&self) -> Fallible<DOMString> {
+    fn GetAppVersion(&self) -> Fallible<DOMString> {
         Ok(~"")
     }
 
-    pub fn GetPlatform(&self) -> Fallible<DOMString> {
+    fn GetPlatform(&self) -> Fallible<DOMString> {
         Ok(~"")
     }
 
-    pub fn GetUserAgent(&self) -> Fallible<DOMString> {
+    fn GetUserAgent(&self) -> Fallible<DOMString> {
         Ok(~"")
     }
 
-    pub fn GetLanguage(&self) -> Option<DOMString> {
+    fn GetLanguage(&self) -> Option<DOMString> {
         None
     }
 
-    pub fn OnLine(&self) -> bool {
+    fn OnLine(&self) -> bool {
         true
     }
 }
 
+
 impl Reflectable for Navigator {
     fn reflector<'a>(&'a self) -> &'a Reflector {
         &self.reflector_
diff --git a/src/components/script/dom/node.rs b/src/components/script/dom/node.rs
index fd911b3f0ba..f3aefd223cc 100644
--- a/src/components/script/dom/node.rs
+++ b/src/components/script/dom/node.rs
@@ -16,15 +16,15 @@ use dom::bindings::js::{ResultRootable, OptionalRootable};
 use dom::bindings::utils::{Reflectable, Reflector, reflect_dom_object};
 use dom::bindings::error::{ErrorResult, Fallible, NotFound, HierarchyRequest};
 use dom::bindings::utils;
-use dom::characterdata::CharacterData;
+use dom::characterdata::{CharacterData, CharacterDataMethods};
 use dom::comment::Comment;
-use dom::document::{Document, HTMLDocument, NonHTMLDocument};
+use dom::document::{Document, DocumentMethods, HTMLDocument, NonHTMLDocument};
 use dom::documentfragment::DocumentFragment;
 use dom::documenttype::DocumentType;
-use dom::element::{Element, ElementTypeId, HTMLAnchorElementTypeId};
+use dom::element::{Element, ElementMethods, ElementTypeId, HTMLAnchorElementTypeId};
 use dom::eventtarget::{EventTarget, NodeTargetTypeId};
 use dom::nodelist::{NodeList};
-use dom::processinginstruction::ProcessingInstruction;
+use dom::processinginstruction::{ProcessingInstruction, ProcessingInstructionMethods};
 use dom::text::Text;
 use dom::virtualmethods::{VirtualMethods, vtable_for};
 use dom::window::Window;
@@ -226,17 +226,17 @@ pub enum NodeTypeId {
 
 pub fn AppendChild<'a>(self_: &mut JSRef<'a, Node>, node: &mut JSRef<Node>) -> Fallible<Unrooted<Node>> {
     let mut self_alias = self_.clone();
-    self_.get_mut().AppendChild(&mut self_alias, node)
+    self_.AppendChild(&mut self_alias, node)
 }
 
 pub fn ReplaceChild<'a>(self_: &mut JSRef<'a, Node>, node: &mut JSRef<Node>, child: &mut JSRef<Node>) -> Fallible<Unrooted<Node>> {
     let mut self_alias = self_.clone();
-    self_.get_mut().ReplaceChild(&mut self_alias, node, child)
+    self_.ReplaceChild(&mut self_alias, node, child)
 }
 
 pub fn RemoveChild<'a>(self_: &mut JSRef<'a, Node>, node: &mut JSRef<Node>) -> Fallible<Unrooted<Node>> {
     let mut self_alias = self_.clone();
-    self_.get_mut().RemoveChild(&mut self_alias, node)
+    self_.RemoveChild(&mut self_alias, node)
 }
 
 pub trait NodeHelpers {
@@ -839,6 +839,12 @@ impl Node {
             })
     }
 
+    pub fn wait_until_safe_to_modify_dom(&self) {
+        let roots = RootCollection::new();
+        let document = self.owner_doc().root(&roots);
+        document.get().wait_until_safe_to_modify_dom();
+    }
+
     pub fn reflect_node<N: Reflectable+NodeBase>
             (node:      ~N,
              document:  &JSRef<Document>,
@@ -897,211 +903,6 @@ impl Node {
         }
     }
 
-    // http://dom.spec.whatwg.org/#dom-node-nodetype
-    pub fn NodeType(&self) -> u16 {
-        match self.type_id {
-            ElementNodeTypeId(_)            => NodeConstants::ELEMENT_NODE,
-            TextNodeTypeId                  => NodeConstants::TEXT_NODE,
-            ProcessingInstructionNodeTypeId => NodeConstants::PROCESSING_INSTRUCTION_NODE,
-            CommentNodeTypeId               => NodeConstants::COMMENT_NODE,
-            DocumentNodeTypeId              => NodeConstants::DOCUMENT_NODE,
-            DoctypeNodeTypeId               => NodeConstants::DOCUMENT_TYPE_NODE,
-            DocumentFragmentNodeTypeId      => NodeConstants::DOCUMENT_FRAGMENT_NODE,
-        }
-    }
-
-    // http://dom.spec.whatwg.org/#dom-node-nodename
-    pub fn NodeName(&self, abstract_self: &JSRef<Node>) -> DOMString {
-        match self.type_id {
-            ElementNodeTypeId(..) => {
-                let elem: &JSRef<Element> = ElementCast::to_ref(abstract_self).unwrap();
-                elem.get().TagName()
-            }
-            TextNodeTypeId => ~"#text",
-            ProcessingInstructionNodeTypeId => {
-                let processing_instruction: &JSRef<ProcessingInstruction> =
-                    ProcessingInstructionCast::to_ref(abstract_self).unwrap();
-                processing_instruction.get().Target()
-            }
-            CommentNodeTypeId => ~"#comment",
-            DoctypeNodeTypeId => {
-                let doctype: &JSRef<DocumentType> = DocumentTypeCast::to_ref(abstract_self).unwrap();
-                doctype.get().name.clone()
-            },
-            DocumentFragmentNodeTypeId => ~"#document-fragment",
-            DocumentNodeTypeId => ~"#document"
-        }
-    }
-
-    // http://dom.spec.whatwg.org/#dom-node-baseuri
-    pub fn GetBaseURI(&self) -> Option<DOMString> {
-        // FIXME (#1824) implement.
-        None
-    }
-
-    // http://dom.spec.whatwg.org/#dom-node-ownerdocument
-    pub fn GetOwnerDocument(&self) -> Option<Unrooted<Document>> {
-        match self.type_id {
-            ElementNodeTypeId(..) |
-            CommentNodeTypeId |
-            TextNodeTypeId |
-            ProcessingInstructionNodeTypeId |
-            DoctypeNodeTypeId |
-            DocumentFragmentNodeTypeId => Some(self.owner_doc()),
-            DocumentNodeTypeId => None
-        }
-    }
-
-    // http://dom.spec.whatwg.org/#dom-node-parentnode
-    pub fn GetParentNode(&self) -> Option<Unrooted<Node>> {
-        self.parent_node.clone().map(|node| Unrooted::new(node))
-    }
-
-    // http://dom.spec.whatwg.org/#dom-node-parentelement
-    pub fn GetParentElement(&self) -> Option<Unrooted<Element>> {
-        let roots = RootCollection::new();
-        self.parent_node.clone()
-                        .and_then(|parent| {
-                            let parent = parent.root(&roots);
-                            ElementCast::to_ref(&*parent).map(|elem| {
-                                Unrooted::new_rooted(elem)
-                            })
-                        })
-    }
-
-    // http://dom.spec.whatwg.org/#dom-node-haschildnodes
-    pub fn HasChildNodes(&self) -> bool {
-        self.first_child.is_some()
-    }
-
-    // http://dom.spec.whatwg.org/#dom-node-childnodes
-    pub fn ChildNodes(&mut self, abstract_self: &JSRef<Node>) -> Unrooted<NodeList> {
-        let roots = RootCollection::new();
-        match self.child_list {
-            None => {
-                let doc = self.owner_doc().root(&roots);
-                let window = doc.deref().window.root(&roots);
-                self.child_list.assign(Some(NodeList::new_child_list(&*window, abstract_self)));
-                Unrooted::new(self.child_list.get_ref().clone())
-            }
-            Some(ref list) => Unrooted::new(list.clone())
-        }
-    }
-
-    // http://dom.spec.whatwg.org/#dom-node-firstchild
-    pub fn GetFirstChild(&self) -> Option<Unrooted<Node>> {
-        self.first_child.clone().map(|node| Unrooted::new(node))
-    }
-
-    // http://dom.spec.whatwg.org/#dom-node-lastchild
-    pub fn GetLastChild(&self) -> Option<Unrooted<Node>> {
-        self.last_child.clone().map(|node| Unrooted::new(node))
-    }
-
-    // http://dom.spec.whatwg.org/#dom-node-previoussibling
-    pub fn GetPreviousSibling(&self) -> Option<Unrooted<Node>> {
-        self.prev_sibling.clone().map(|node| Unrooted::new(node))
-    }
-
-    // http://dom.spec.whatwg.org/#dom-node-nextsibling
-    pub fn GetNextSibling(&self) -> Option<Unrooted<Node>> {
-        self.next_sibling.clone().map(|node| Unrooted::new(node))
-    }
-
-    // http://dom.spec.whatwg.org/#dom-node-nodevalue
-    pub fn GetNodeValue(&self, abstract_self: &JSRef<Node>) -> Option<DOMString> {
-        match self.type_id {
-            CommentNodeTypeId |
-            TextNodeTypeId |
-            ProcessingInstructionNodeTypeId => {
-                let chardata: &JSRef<CharacterData> = CharacterDataCast::to_ref(abstract_self).unwrap();
-                Some(chardata.get().Data())
-            }
-            _ => {
-                None
-            }
-        }
-    }
-
-    // http://dom.spec.whatwg.org/#dom-node-nodevalue
-    pub fn SetNodeValue(&mut self, abstract_self: &mut JSRef<Node>, val: Option<DOMString>)
-                        -> ErrorResult {
-        match self.type_id {
-            CommentNodeTypeId |
-            TextNodeTypeId |
-            ProcessingInstructionNodeTypeId => {
-                self.SetTextContent(abstract_self, val)
-            }
-            _ => Ok(())
-        }
-    }
-
-    // http://dom.spec.whatwg.org/#dom-node-textcontent
-    pub fn GetTextContent(&self, abstract_self: &JSRef<Node>) -> Option<DOMString> {
-        let roots = RootCollection::new();
-        match self.type_id {
-            DocumentFragmentNodeTypeId |
-            ElementNodeTypeId(..) => {
-                let mut content = ~"";
-                for node in abstract_self.traverse_preorder(&roots) {
-                    if node.is_text() {
-                        let text: &JSRef<Text> = TextCast::to_ref(&node).unwrap();
-                        content.push_str(text.get().characterdata.data.as_slice());
-                    }
-                }
-                Some(content)
-            }
-            CommentNodeTypeId |
-            TextNodeTypeId |
-            ProcessingInstructionNodeTypeId => {
-                let characterdata: &JSRef<CharacterData> = CharacterDataCast::to_ref(abstract_self).unwrap();
-                Some(characterdata.get().Data())
-            }
-            DoctypeNodeTypeId |
-            DocumentNodeTypeId => {
-                None
-            }
-        }
-    }
-
-    // http://dom.spec.whatwg.org/#dom-node-textcontent
-    pub fn SetTextContent(&mut self, abstract_self: &mut JSRef<Node>, value: Option<DOMString>)
-                          -> ErrorResult {
-        let roots = RootCollection::new();
-        let value = null_str_as_empty(&value);
-        match self.type_id {
-            DocumentFragmentNodeTypeId |
-            ElementNodeTypeId(..) => {
-                // Step 1-2.
-                let node = if value.len() == 0 {
-                    None
-                } else {
-                    let document = self.owner_doc();
-                    let document = document.root(&roots);
-                    Some(NodeCast::from_unrooted(document.deref().CreateTextNode(&*document, value)))
-                }.root(&roots);
-                
-                // Step 3.
-                Node::replace_all(node.root_ref(), abstract_self);
-            }
-            CommentNodeTypeId |
-            TextNodeTypeId |
-            ProcessingInstructionNodeTypeId => {
-                self.wait_until_safe_to_modify_dom();
-
-                let characterdata: &mut JSRef<CharacterData> = CharacterDataCast::to_mut_ref(abstract_self).unwrap();
-                characterdata.get_mut().data = value.clone();
-
-                // Notify the document that the content of this node is different
-                let document = self.owner_doc().root(&roots);
-                document.get().content_changed();
-            }
-            DoctypeNodeTypeId |
-            DocumentNodeTypeId => {}
-        }
-        Ok(())
-    }
-
     // http://dom.spec.whatwg.org/#concept-node-adopt
     pub fn adopt(node: &mut JSRef<Node>, document: &JSRef<Document>) {
         let roots = RootCollection::new();
@@ -1505,26 +1306,334 @@ impl Node {
         Unrooted::new_rooted(&*copy)
     }
 
+    //
+    // Low-level pointer stitching
+    //
+
+    pub fn set_parent_node(&mut self, new_parent_node: Option<JSRef<Node>>) {
+        let roots = RootCollection::new();
+        let doc = self.owner_doc().root(&roots);
+        doc.get().wait_until_safe_to_modify_dom();
+        self.parent_node.assign(new_parent_node);
+    }
+
+    pub fn set_first_child(&mut self, new_first_child: Option<JSRef<Node>>) {
+        let roots = RootCollection::new();
+        let doc = self.owner_doc().root(&roots);
+        doc.get().wait_until_safe_to_modify_dom();
+        self.first_child.assign(new_first_child);
+    }
+
+    pub fn set_last_child(&mut self, new_last_child: Option<JSRef<Node>>) {
+        let roots = RootCollection::new();
+        let doc = self.owner_doc().root(&roots);
+        doc.get().wait_until_safe_to_modify_dom();
+        self.last_child.assign(new_last_child);
+    }
+
+    pub fn set_prev_sibling(&mut self, new_prev_sibling: Option<JSRef<Node>>) {
+        let roots = RootCollection::new();
+        let doc = self.owner_doc().root(&roots);
+        doc.get().wait_until_safe_to_modify_dom();
+        self.prev_sibling.assign(new_prev_sibling);
+    }
+
+    pub fn set_next_sibling(&mut self, new_next_sibling: Option<JSRef<Node>>) {
+        let roots = RootCollection::new();
+        let doc = self.owner_doc().root(&roots);
+        doc.get().wait_until_safe_to_modify_dom();
+        self.next_sibling.assign(new_next_sibling);
+    }
+
+    pub fn get_hover_state(&self) -> bool {
+        self.flags.get_in_hover_state()
+    }
+
+    pub fn set_hover_state(&mut self, state: bool) {
+        self.flags.set_is_in_hover_state(state);
+    }
+
+    #[inline]
+    pub fn parent_node_ref<'a>(&'a self) -> Option<&'a JS<Node>> {
+        self.parent_node.as_ref()
+    }
+
+    #[inline]
+    pub fn first_child_ref<'a>(&'a self) -> Option<&'a JS<Node>> {
+        self.first_child.as_ref()
+    }
+
+    #[inline]
+    pub fn last_child_ref<'a>(&'a self) -> Option<&'a JS<Node>> {
+        self.last_child.as_ref()
+    }
+
+    #[inline]
+    pub fn prev_sibling_ref<'a>(&'a self) -> Option<&'a JS<Node>> {
+        self.prev_sibling.as_ref()
+    }
+
+    #[inline]
+    pub fn next_sibling_ref<'a>(&'a self) -> Option<&'a JS<Node>> {
+        self.next_sibling.as_ref()
+    }
+
+    pub unsafe fn get_hover_state_for_layout(&self) -> bool {
+        let unsafe_this: *Node = cast::transmute::<&Node,*Node>(self);
+        (*unsafe_this).flags.get_in_hover_state()
+    }
+}
+
+pub trait NodeMethods {
+    fn NodeType(&self) -> u16;
+    fn NodeName(&self, abstract_self: &JSRef<Node>) -> DOMString;
+    fn GetBaseURI(&self) -> Option<DOMString>;
+    fn GetOwnerDocument(&self) -> Option<Unrooted<Document>>;
+    fn GetParentNode(&self) -> Option<Unrooted<Node>>;
+    fn GetParentElement(&self) -> Option<Unrooted<Element>>;
+    fn HasChildNodes(&self) -> bool;
+    fn ChildNodes(&mut self, abstract_self: &JSRef<Node>) -> Unrooted<NodeList>;
+    fn GetFirstChild(&self) -> Option<Unrooted<Node>>;
+    fn GetLastChild(&self) -> Option<Unrooted<Node>>;
+    fn GetPreviousSibling(&self) -> Option<Unrooted<Node>>;
+    fn GetNextSibling(&self) -> Option<Unrooted<Node>>;
+    fn GetNodeValue(&self, abstract_self: &JSRef<Node>) -> Option<DOMString>;
+    fn SetNodeValue(&mut self, abstract_self: &mut JSRef<Node>, val: Option<DOMString>) -> ErrorResult;
+    fn GetTextContent(&self, abstract_self: &JSRef<Node>) -> Option<DOMString>;
+    fn SetTextContent(&mut self, abstract_self: &mut JSRef<Node>, value: Option<DOMString>) -> ErrorResult;
+    fn InsertBefore(&self, abstract_self: &mut JSRef<Node>, node: &mut JSRef<Node>, child: Option<JSRef<Node>>) -> Fallible<Unrooted<Node>>;
+    fn AppendChild(&self, abstract_self: &mut JSRef<Node>, node: &mut JSRef<Node>) -> Fallible<Unrooted<Node>>;
+    fn ReplaceChild(&self, parent: &mut JSRef<Node>, node: &mut JSRef<Node>, child: &mut JSRef<Node>) -> Fallible<Unrooted<Node>>;
+    fn RemoveChild(&self, abstract_self: &mut JSRef<Node>, node: &mut JSRef<Node>) -> Fallible<Unrooted<Node>>;
+    fn Normalize(&mut self, abstract_self: &mut JSRef<Node>);
+    fn CloneNode(&self, abstract_self: &mut JSRef<Node>, deep: bool) -> Unrooted<Node>;
+    fn IsEqualNode(&self, abstract_self: &JSRef<Node>, maybe_node: Option<JSRef<Node>>) -> bool;
+    fn CompareDocumentPosition(&self, abstract_self: &JSRef<Node>, other: &JSRef<Node>) -> u16;
+    fn Contains(&self, abstract_self: &JSRef<Node>, maybe_other: Option<JSRef<Node>>) -> bool;
+    fn LookupPrefix(&self, _prefix: Option<DOMString>) -> Option<DOMString>;
+    fn LookupNamespaceURI(&self, _namespace: Option<DOMString>) -> Option<DOMString>;
+    fn IsDefaultNamespace(&self, _namespace: Option<DOMString>) -> bool;
+}
+
+impl<'a> NodeMethods for JSRef<'a, Node> {
+    // http://dom.spec.whatwg.org/#dom-node-nodetype
+    fn NodeType(&self) -> u16 {
+        match self.type_id {
+            ElementNodeTypeId(_)            => NodeConstants::ELEMENT_NODE,
+            TextNodeTypeId                  => NodeConstants::TEXT_NODE,
+            ProcessingInstructionNodeTypeId => NodeConstants::PROCESSING_INSTRUCTION_NODE,
+            CommentNodeTypeId               => NodeConstants::COMMENT_NODE,
+            DocumentNodeTypeId              => NodeConstants::DOCUMENT_NODE,
+            DoctypeNodeTypeId               => NodeConstants::DOCUMENT_TYPE_NODE,
+            DocumentFragmentNodeTypeId      => NodeConstants::DOCUMENT_FRAGMENT_NODE,
+        }
+    }
+
+    // http://dom.spec.whatwg.org/#dom-node-nodename
+    fn NodeName(&self, abstract_self: &JSRef<Node>) -> DOMString {
+        match self.type_id {
+            ElementNodeTypeId(..) => {
+                let elem: &JSRef<Element> = ElementCast::to_ref(abstract_self).unwrap();
+                elem.TagName()
+            }
+            TextNodeTypeId => ~"#text",
+            ProcessingInstructionNodeTypeId => {
+                let processing_instruction: &JSRef<ProcessingInstruction> =
+                    ProcessingInstructionCast::to_ref(abstract_self).unwrap();
+                processing_instruction.Target()
+            }
+            CommentNodeTypeId => ~"#comment",
+            DoctypeNodeTypeId => {
+                let doctype: &JSRef<DocumentType> = DocumentTypeCast::to_ref(abstract_self).unwrap();
+                doctype.get().name.clone()
+            },
+            DocumentFragmentNodeTypeId => ~"#document-fragment",
+            DocumentNodeTypeId => ~"#document"
+        }
+    }
+
+    // http://dom.spec.whatwg.org/#dom-node-baseuri
+    fn GetBaseURI(&self) -> Option<DOMString> {
+        // FIXME (#1824) implement.
+        None
+    }
+
+    // http://dom.spec.whatwg.org/#dom-node-ownerdocument
+    fn GetOwnerDocument(&self) -> Option<Unrooted<Document>> {
+        match self.type_id {
+            ElementNodeTypeId(..) |
+            CommentNodeTypeId |
+            TextNodeTypeId |
+            ProcessingInstructionNodeTypeId |
+            DoctypeNodeTypeId |
+            DocumentFragmentNodeTypeId => Some(self.owner_doc()),
+            DocumentNodeTypeId => None
+        }
+    }
+
+    // http://dom.spec.whatwg.org/#dom-node-parentnode
+    fn GetParentNode(&self) -> Option<Unrooted<Node>> {
+        self.parent_node.clone().map(|node| Unrooted::new(node))
+    }
+
+    // http://dom.spec.whatwg.org/#dom-node-parentelement
+    fn GetParentElement(&self) -> Option<Unrooted<Element>> {
+        let roots = RootCollection::new();
+        self.parent_node.clone()
+                        .and_then(|parent| {
+                            let parent = parent.root(&roots);
+                            ElementCast::to_ref(&*parent).map(|elem| {
+                                Unrooted::new_rooted(elem)
+                            })
+                        })
+    }
+
+    // http://dom.spec.whatwg.org/#dom-node-haschildnodes
+    fn HasChildNodes(&self) -> bool {
+        self.first_child.is_some()
+    }
+
+    // http://dom.spec.whatwg.org/#dom-node-childnodes
+    fn ChildNodes(&mut self, abstract_self: &JSRef<Node>) -> Unrooted<NodeList> {
+        let roots = RootCollection::new();
+        match self.child_list {
+            None => (),
+            Some(ref list) => return Unrooted::new(list.clone()),
+        }
+
+        let doc = self.deref().owner_doc().root(&roots);
+        let window = doc.deref().window.root(&roots);
+        self.child_list.assign(Some(NodeList::new_child_list(&*window, abstract_self)));
+        Unrooted::new(self.child_list.get_ref().clone())
+    }
+
+    // http://dom.spec.whatwg.org/#dom-node-firstchild
+    fn GetFirstChild(&self) -> Option<Unrooted<Node>> {
+        self.first_child.clone().map(|node| Unrooted::new(node))
+    }
+
+    // http://dom.spec.whatwg.org/#dom-node-lastchild
+    fn GetLastChild(&self) -> Option<Unrooted<Node>> {
+        self.last_child.clone().map(|node| Unrooted::new(node))
+    }
+
+    // http://dom.spec.whatwg.org/#dom-node-previoussibling
+    fn GetPreviousSibling(&self) -> Option<Unrooted<Node>> {
+        self.prev_sibling.clone().map(|node| Unrooted::new(node))
+    }
+
+    // http://dom.spec.whatwg.org/#dom-node-nextsibling
+    fn GetNextSibling(&self) -> Option<Unrooted<Node>> {
+        self.next_sibling.clone().map(|node| Unrooted::new(node))
+    }
+
+    // http://dom.spec.whatwg.org/#dom-node-nodevalue
+    fn GetNodeValue(&self, abstract_self: &JSRef<Node>) -> Option<DOMString> {
+        match self.type_id {
+            CommentNodeTypeId |
+            TextNodeTypeId |
+            ProcessingInstructionNodeTypeId => {
+                let chardata: &JSRef<CharacterData> = CharacterDataCast::to_ref(abstract_self).unwrap();
+                Some(chardata.Data())
+            }
+            _ => {
+                None
+            }
+        }
+    }
+
+    // http://dom.spec.whatwg.org/#dom-node-nodevalue
+    fn SetNodeValue(&mut self, abstract_self: &mut JSRef<Node>, val: Option<DOMString>)
+                        -> ErrorResult {
+        match self.type_id {
+            CommentNodeTypeId |
+            TextNodeTypeId |
+            ProcessingInstructionNodeTypeId => {
+                self.SetTextContent(abstract_self, val)
+            }
+            _ => Ok(())
+        }
+    }
+
+    // http://dom.spec.whatwg.org/#dom-node-textcontent
+    fn GetTextContent(&self, abstract_self: &JSRef<Node>) -> Option<DOMString> {
+        let roots = RootCollection::new();
+        match self.type_id {
+            DocumentFragmentNodeTypeId |
+            ElementNodeTypeId(..) => {
+                let mut content = ~"";
+                for node in abstract_self.traverse_preorder(&roots) {
+                    if node.is_text() {
+                        let text: &JSRef<Text> = TextCast::to_ref(&node).unwrap();
+                        content.push_str(text.get().characterdata.data.as_slice());
+                    }
+                }
+                Some(content)
+            }
+            CommentNodeTypeId |
+            TextNodeTypeId |
+            ProcessingInstructionNodeTypeId => {
+                let characterdata: &JSRef<CharacterData> = CharacterDataCast::to_ref(abstract_self).unwrap();
+                Some(characterdata.Data())
+            }
+            DoctypeNodeTypeId |
+            DocumentNodeTypeId => {
+                None
+            }
+        }
+    }
+
+    // http://dom.spec.whatwg.org/#dom-node-textcontent
+    fn SetTextContent(&mut self, abstract_self: &mut JSRef<Node>, value: Option<DOMString>)
+                          -> ErrorResult {
+        let roots = RootCollection::new();
+        let value = null_str_as_empty(&value);
+        match self.type_id {
+            DocumentFragmentNodeTypeId |
+            ElementNodeTypeId(..) => {
+                // Step 1-2.
+                let node = if value.len() == 0 {
+                    None
+                } else {
+                    let document = self.owner_doc().root(&roots);
+                    Some(NodeCast::from_unrooted(document.deref().CreateTextNode(&*document, value)))
+                }.root(&roots);
+                
+                // Step 3.
+                Node::replace_all(node.root_ref(), abstract_self);
+            }
+            CommentNodeTypeId |
+            TextNodeTypeId |
+            ProcessingInstructionNodeTypeId => {
+                self.wait_until_safe_to_modify_dom();
+
+                let characterdata: &mut JSRef<CharacterData> = CharacterDataCast::to_mut_ref(abstract_self).unwrap();
+                characterdata.get_mut().data = value.clone();
+
+                // Notify the document that the content of this node is different
+                let document = self.owner_doc().root(&roots);
+                document.get().content_changed();
+            }
+            DoctypeNodeTypeId |
+            DocumentNodeTypeId => {}
+        }
+        Ok(())
+    }
+
     // http://dom.spec.whatwg.org/#dom-node-insertbefore
-    pub fn InsertBefore(&self, abstract_self: &mut JSRef<Node>, node: &mut JSRef<Node>, child: Option<JSRef<Node>>)
+    fn InsertBefore(&self, abstract_self: &mut JSRef<Node>, node: &mut JSRef<Node>, child: Option<JSRef<Node>>)
                         -> Fallible<Unrooted<Node>> {
         Node::pre_insert(node, abstract_self, child)
     }
 
-    pub fn wait_until_safe_to_modify_dom(&self) {
-        let roots = RootCollection::new();
-        let document = self.owner_doc().root(&roots);
-        document.get().wait_until_safe_to_modify_dom();
-    }
-
     // http://dom.spec.whatwg.org/#dom-node-appendchild
-    pub fn AppendChild(&self, abstract_self: &mut JSRef<Node>, node: &mut JSRef<Node>)
+    fn AppendChild(&self, abstract_self: &mut JSRef<Node>, node: &mut JSRef<Node>)
                        -> Fallible<Unrooted<Node>> {
         Node::pre_insert(node, abstract_self, None)
     }
 
     // http://dom.spec.whatwg.org/#concept-node-replace
-    pub fn ReplaceChild(&self, parent: &mut JSRef<Node>, node: &mut JSRef<Node>, child: &mut JSRef<Node>)
+    fn ReplaceChild(&self, parent: &mut JSRef<Node>, node: &mut JSRef<Node>, child: &mut JSRef<Node>)
                         -> Fallible<Unrooted<Node>> {
         let roots = RootCollection::new();
 
@@ -1655,26 +1764,26 @@ impl Node {
     }
 
     // http://dom.spec.whatwg.org/#dom-node-removechild
-    pub fn RemoveChild(&self, abstract_self: &mut JSRef<Node>, node: &mut JSRef<Node>)
+    fn RemoveChild(&self, abstract_self: &mut JSRef<Node>, node: &mut JSRef<Node>)
                        -> Fallible<Unrooted<Node>> {
         Node::pre_remove(node, abstract_self)
     }
 
     // http://dom.spec.whatwg.org/#dom-node-normalize
-    pub fn Normalize(&mut self, abstract_self: &mut JSRef<Node>) {
+    fn Normalize(&mut self, abstract_self: &mut JSRef<Node>) {
         let roots = RootCollection::new();
         let mut prev_text = None;
         for mut child in self.children() {
             if child.is_text() {
                 let mut child_alias = child.clone();
                 let characterdata: &JSRef<CharacterData> = CharacterDataCast::to_ref(&child).unwrap();
-                if characterdata.get().Length() == 0 {
+                if characterdata.Length() == 0 {
                     abstract_self.remove_child(&mut child_alias);
                 } else {
                     match prev_text {
                         Some(ref mut text_node) => {
                             let prev_characterdata: &mut JSRef<CharacterData> = CharacterDataCast::to_mut_ref(text_node).unwrap();
-                            let _ = prev_characterdata.get_mut().AppendData(characterdata.get().Data());
+                            let _ = prev_characterdata.AppendData(characterdata.Data());
                             abstract_self.remove_child(&mut child_alias);
                         },
                         None => prev_text = Some(child_alias)
@@ -1682,7 +1791,7 @@ impl Node {
                 }
             } else {
                 let mut c = child.clone();
-                child.get_mut().Normalize(&mut c);
+                child.Normalize(&mut c);
                 prev_text = None;
             }
 
@@ -1690,7 +1799,7 @@ impl Node {
     }
 
     // http://dom.spec.whatwg.org/#dom-node-clonenode
-    pub fn CloneNode(&self, abstract_self: &mut JSRef<Node>, deep: bool) -> Unrooted<Node> {
+    fn CloneNode(&self, abstract_self: &mut JSRef<Node>, deep: bool) -> Unrooted<Node> {
         match deep {
             true => Node::clone(abstract_self, None, CloneChildren),
             false => Node::clone(abstract_self, None, DoNotCloneChildren)
@@ -1698,7 +1807,7 @@ impl Node {
     }
 
     // http://dom.spec.whatwg.org/#dom-node-isequalnode
-    pub fn IsEqualNode(&self, abstract_self: &JSRef<Node>, maybe_node: Option<JSRef<Node>>) -> bool {
+    fn IsEqualNode(&self, abstract_self: &JSRef<Node>, maybe_node: Option<JSRef<Node>>) -> bool {
         fn is_equal_doctype(node: &JSRef<Node>, other: &JSRef<Node>) -> bool {
             let doctype: &JSRef<DocumentType> = DocumentTypeCast::to_ref(node).unwrap();
             let other_doctype: &JSRef<DocumentType> = DocumentTypeCast::to_ref(other).unwrap();
@@ -1775,7 +1884,7 @@ impl Node {
     }
 
     // http://dom.spec.whatwg.org/#dom-node-comparedocumentposition
-    pub fn CompareDocumentPosition(&self, abstract_self: &JSRef<Node>, other: &JSRef<Node>) -> u16 {
+    fn CompareDocumentPosition(&self, abstract_self: &JSRef<Node>, other: &JSRef<Node>) -> u16 {
         let roots = RootCollection::new();
         if abstract_self == other {
             // step 2.
@@ -1830,7 +1939,7 @@ impl Node {
     }
 
     // http://dom.spec.whatwg.org/#dom-node-contains
-    pub fn Contains(&self, abstract_self: &JSRef<Node>, maybe_other: Option<JSRef<Node>>) -> bool {
+    fn Contains(&self, abstract_self: &JSRef<Node>, maybe_other: Option<JSRef<Node>>) -> bool {
         match maybe_other {
             None => false,
             Some(ref other) => abstract_self.is_inclusive_ancestor_of(other)
@@ -1838,100 +1947,25 @@ impl Node {
     }
 
     // http://dom.spec.whatwg.org/#dom-node-lookupprefix
-    pub fn LookupPrefix(&self, _prefix: Option<DOMString>) -> Option<DOMString> {
+    fn LookupPrefix(&self, _prefix: Option<DOMString>) -> Option<DOMString> {
         // FIXME (#1826) implement.
         None
     }
 
     // http://dom.spec.whatwg.org/#dom-node-lookupnamespaceuri
-    pub fn LookupNamespaceURI(&self, _namespace: Option<DOMString>) -> Option<DOMString> {
+    fn LookupNamespaceURI(&self, _namespace: Option<DOMString>) -> Option<DOMString> {
         // FIXME (#1826) implement.
         None
     }
 
     // http://dom.spec.whatwg.org/#dom-node-isdefaultnamespace
-    pub fn IsDefaultNamespace(&self, _namespace: Option<DOMString>) -> bool {
+    fn IsDefaultNamespace(&self, _namespace: Option<DOMString>) -> bool {
         // FIXME (#1826) implement.
         false
     }
-
-    //
-    // Low-level pointer stitching
-    //
-
-    pub fn set_parent_node(&mut self, new_parent_node: Option<JSRef<Node>>) {
-        let roots = RootCollection::new();
-        let doc = self.owner_doc().root(&roots);
-        doc.get().wait_until_safe_to_modify_dom();
-        self.parent_node.assign(new_parent_node);
-    }
-
-    pub fn set_first_child(&mut self, new_first_child: Option<JSRef<Node>>) {
-        let roots = RootCollection::new();
-        let doc = self.owner_doc().root(&roots);
-        doc.get().wait_until_safe_to_modify_dom();
-        self.first_child.assign(new_first_child);
-    }
-
-    pub fn set_last_child(&mut self, new_last_child: Option<JSRef<Node>>) {
-        let roots = RootCollection::new();
-        let doc = self.owner_doc().root(&roots);
-        doc.get().wait_until_safe_to_modify_dom();
-        self.last_child.assign(new_last_child);
-    }
-
-    pub fn set_prev_sibling(&mut self, new_prev_sibling: Option<JSRef<Node>>) {
-        let roots = RootCollection::new();
-        let doc = self.owner_doc().root(&roots);
-        doc.get().wait_until_safe_to_modify_dom();
-        self.prev_sibling.assign(new_prev_sibling);
-    }
-
-    pub fn set_next_sibling(&mut self, new_next_sibling: Option<JSRef<Node>>) {
-        let roots = RootCollection::new();
-        let doc = self.owner_doc().root(&roots);
-        doc.get().wait_until_safe_to_modify_dom();
-        self.next_sibling.assign(new_next_sibling);
-    }
-
-    pub fn get_hover_state(&self) -> bool {
-        self.flags.get_in_hover_state()
-    }
-
-    pub fn set_hover_state(&mut self, state: bool) {
-        self.flags.set_is_in_hover_state(state);
-    }
-
-    #[inline]
-    pub fn parent_node_ref<'a>(&'a self) -> Option<&'a JS<Node>> {
-        self.parent_node.as_ref()
-    }
-
-    #[inline]
-    pub fn first_child_ref<'a>(&'a self) -> Option<&'a JS<Node>> {
-        self.first_child.as_ref()
-    }
-
-    #[inline]
-    pub fn last_child_ref<'a>(&'a self) -> Option<&'a JS<Node>> {
-        self.last_child.as_ref()
-    }
-
-    #[inline]
-    pub fn prev_sibling_ref<'a>(&'a self) -> Option<&'a JS<Node>> {
-        self.prev_sibling.as_ref()
-    }
-
-    #[inline]
-    pub fn next_sibling_ref<'a>(&'a self) -> Option<&'a JS<Node>> {
-        self.next_sibling.as_ref()
-    }
-
-    pub unsafe fn get_hover_state_for_layout(&self) -> bool {
-        self.flags.get_in_hover_state()
-    }
 }
 
+
 impl Reflectable for Node {
     fn reflector<'a>(&'a self) -> &'a Reflector {
         self.eventtarget.reflector()
diff --git a/src/components/script/dom/nodelist.rs b/src/components/script/dom/nodelist.rs
index 219731034f1..a874a068b65 100644
--- a/src/components/script/dom/nodelist.rs
+++ b/src/components/script/dom/nodelist.rs
@@ -44,8 +44,16 @@ impl NodeList {
     pub fn new_child_list(window: &JSRef<Window>, node: &JSRef<Node>) -> Unrooted<NodeList> {
         NodeList::new(window, Children(node.unrooted()))
     }
+}
 
-    pub fn Length(&self) -> u32 {
+pub trait NodeListMethods {
+    fn Length(&self) -> u32;
+    fn Item(&self, index: u32) -> Option<Unrooted<Node>>;
+    fn IndexedGetter(&self, index: u32, found: &mut bool) -> Option<Unrooted<Node>>;
+}
+
+impl<'a> NodeListMethods for JSRef<'a, NodeList> {
+    fn Length(&self) -> u32 {
         let roots = RootCollection::new();
         match self.list_type {
             Simple(ref elems) => elems.len() as u32,
@@ -56,7 +64,7 @@ impl NodeList {
         }
     }
 
-    pub fn Item(&self, index: u32) -> Option<Unrooted<Node>> {
+    fn Item(&self, index: u32) -> Option<Unrooted<Node>> {
         let roots = RootCollection::new();
         match self.list_type {
             _ if index >= self.Length() => None,
@@ -69,7 +77,7 @@ impl NodeList {
         }
     }
 
-    pub fn IndexedGetter(&self, index: u32, found: &mut bool) -> Option<Unrooted<Node>> {
+    fn IndexedGetter(&self, index: u32, found: &mut bool) -> Option<Unrooted<Node>> {
         let item = self.Item(index);
         *found = item.is_some();
         item
diff --git a/src/components/script/dom/processinginstruction.rs b/src/components/script/dom/processinginstruction.rs
index c094e4ae654..ee88cb51bf6 100644
--- a/src/components/script/dom/processinginstruction.rs
+++ b/src/components/script/dom/processinginstruction.rs
@@ -41,8 +41,13 @@ impl ProcessingInstruction {
     }
 }
 
-impl ProcessingInstruction {
-    pub fn Target(&self) -> DOMString {
+pub trait ProcessingInstructionMethods {
+    fn Target(&self) -> DOMString;
+}
+
+impl<'a> ProcessingInstructionMethods for JSRef<'a, ProcessingInstruction> {
+    fn Target(&self) -> DOMString {
         self.target.clone()
     }
 }
+
diff --git a/src/components/script/dom/testbinding.rs b/src/components/script/dom/testbinding.rs
index 76bb587b134..3ad4f8fa202 100644
--- a/src/components/script/dom/testbinding.rs
+++ b/src/components/script/dom/testbinding.rs
@@ -22,192 +22,372 @@ pub struct TestBinding {
     pub window: JS<Window>,
 }
 
-impl TestBinding {
-    pub fn BooleanAttribute(&self) -> bool { false }
-    pub fn SetBooleanAttribute(&self, _: bool) {}
-    pub fn ByteAttribute(&self) -> i8 { 0 }
-    pub fn SetByteAttribute(&self, _: i8) {}
-    pub fn OctetAttribute(&self) -> u8 { 0 }
-    pub fn SetOctetAttribute(&self, _: u8) {}
-    pub fn ShortAttribute(&self) -> i16 { 0 }
-    pub fn SetShortAttribute(&self, _: i16) {}
-    pub fn UnsignedShortAttribute(&self) -> u16 { 0 }
-    pub fn SetUnsignedShortAttribute(&self, _: u16) {}
-    pub fn LongAttribute(&self) -> i32 { 0 }
-    pub fn SetLongAttribute(&self, _: i32) {}
-    pub fn UnsignedLongAttribute(&self) -> u32 { 0 }
-    pub fn SetUnsignedLongAttribute(&self, _: u32) {}
-    pub fn LongLongAttribute(&self) -> i64 { 0 }
-    pub fn SetLongLongAttribute(&self, _: i64) {}
-    pub fn UnsignedLongLongAttribute(&self) -> u64 { 0 }
-    pub fn SetUnsignedLongLongAttribute(&self, _: u64) {}
-    pub fn FloatAttribute(&self) -> f32 { 0. }
-    pub fn SetFloatAttribute(&self, _: f32) {}
-    pub fn DoubleAttribute(&self) -> f64 { 0. }
-    pub fn SetDoubleAttribute(&self, _: f64) {}
-    pub fn StringAttribute(&self) -> DOMString { ~"" }
-    pub fn SetStringAttribute(&self, _: DOMString) {}
-    pub fn ByteStringAttribute(&self) -> ByteString { ByteString::new(vec!()) }
-    pub fn SetByteStringAttribute(&self, _: ByteString) {}
-    pub fn EnumAttribute(&self) -> TestEnum { _empty }
-    pub fn SetEnumAttribute(&self, _: TestEnum) {}
-    pub fn InterfaceAttribute(&self) -> Unrooted<Blob> {
+pub trait TestBindingMethods {
+    fn BooleanAttribute(&self) -> bool;
+    fn SetBooleanAttribute(&self, _: bool);
+    fn ByteAttribute(&self) -> i8;
+    fn SetByteAttribute(&self, _: i8);
+    fn OctetAttribute(&self) -> u8;
+    fn SetOctetAttribute(&self, _: u8);
+    fn ShortAttribute(&self) -> i16;
+    fn SetShortAttribute(&self, _: i16);
+    fn UnsignedShortAttribute(&self) -> u16;
+    fn SetUnsignedShortAttribute(&self, _: u16);
+    fn LongAttribute(&self) -> i32;
+    fn SetLongAttribute(&self, _: i32);
+    fn UnsignedLongAttribute(&self) -> u32;
+    fn SetUnsignedLongAttribute(&self, _: u32);
+    fn LongLongAttribute(&self) -> i64;
+    fn SetLongLongAttribute(&self, _: i64);
+    fn UnsignedLongLongAttribute(&self) -> u64;
+    fn SetUnsignedLongLongAttribute(&self, _: u64);
+    fn FloatAttribute(&self) -> f32;
+    fn SetFloatAttribute(&self, _: f32);
+    fn DoubleAttribute(&self) -> f64;
+    fn SetDoubleAttribute(&self, _: f64);
+    fn StringAttribute(&self) -> DOMString;
+    fn SetStringAttribute(&self, _: DOMString);
+    fn ByteStringAttribute(&self) -> ByteString;
+    fn SetByteStringAttribute(&self, _: ByteString);
+    fn EnumAttribute(&self) -> TestEnum;
+    fn SetEnumAttribute(&self, _: TestEnum);
+    fn InterfaceAttribute(&self) -> Unrooted<Blob>;
+    fn SetInterfaceAttribute(&self, _: &JSRef<Blob>);
+    fn AnyAttribute(&self, _: *JSContext) -> JSVal;
+    fn SetAnyAttribute(&self, _: *JSContext, _: JSVal);
+
+    fn GetBooleanAttributeNullable(&self) -> Option<bool>;
+    fn SetBooleanAttributeNullable(&self, _: Option<bool>);
+    fn GetByteAttributeNullable(&self) -> Option<i8>;
+    fn SetByteAttributeNullable(&self, _: Option<i8>);
+    fn GetOctetAttributeNullable(&self) -> Option<u8>;
+    fn SetOctetAttributeNullable(&self, _: Option<u8>);
+    fn GetShortAttributeNullable(&self) -> Option<i16>;
+    fn SetShortAttributeNullable(&self, _: Option<i16>);
+    fn GetUnsignedShortAttributeNullable(&self) -> Option<u16>;
+    fn SetUnsignedShortAttributeNullable(&self, _: Option<u16>);
+    fn GetLongAttributeNullable(&self) -> Option<i32>;
+    fn SetLongAttributeNullable(&self, _: Option<i32>);
+    fn GetUnsignedLongAttributeNullable(&self) -> Option<u32>;
+    fn SetUnsignedLongAttributeNullable(&self, _: Option<u32>);
+    fn GetLongLongAttributeNullable(&self) -> Option<i64>;
+    fn SetLongLongAttributeNullable(&self, _: Option<i64>);
+    fn GetUnsignedLongLongAttributeNullable(&self) -> Option<u64>;
+    fn SetUnsignedLongLongAttributeNullable(&self, _: Option<u64>);
+    fn GetFloatAttributeNullable(&self) -> Option<f32>;
+    fn SetFloatAttributeNullable(&self, _: Option<f32>);
+    fn GetDoubleAttributeNullable(&self) -> Option<f64>;
+    fn SetDoubleAttributeNullable(&self, _: Option<f64>);
+    fn GetByteStringAttributeNullable(&self) -> Option<ByteString>;
+    fn SetByteStringAttributeNullable(&self, _: Option<ByteString>);
+    fn GetStringAttributeNullable(&self) -> Option<DOMString>;
+    fn SetStringAttributeNullable(&self, _: Option<DOMString>);
+    fn GetEnumAttributeNullable(&self) -> Option<TestEnum>;
+    fn GetInterfaceAttributeNullable(&self) -> Option<Unrooted<Blob>>;
+    fn SetInterfaceAttributeNullable(&self, _: Option<JSRef<Blob>>);
+
+    fn PassBoolean(&self, _: bool);
+    fn PassByte(&self, _: i8);
+    fn PassOctet(&self, _: u8);
+    fn PassShort(&self, _: i16);
+    fn PassUnsignedShort(&self, _: u16);
+    fn PassLong(&self, _: i32);
+    fn PassUnsignedLong(&self, _: u32);
+    fn PassLongLong(&self, _: i64);
+    fn PassUnsignedLongLong(&self, _: u64);
+    fn PassFloat(&self, _: f32);
+    fn PassDouble(&self, _: f64);
+    fn PassString(&self, _: DOMString);
+    fn PassByteString(&self, _: ByteString);
+    fn PassEnum(&self, _: TestEnum);
+    fn PassInterface(&self, _: &JSRef<Blob>);
+    fn PassUnion(&self, _: HTMLElementOrLong);
+    fn PassAny(&self, _: *JSContext, _: JSVal);
+
+    fn PassNullableBoolean(&self, _: Option<bool>);
+    fn PassNullableByte(&self, _: Option<i8>);
+    fn PassNullableOctet(&self, _: Option<u8>);
+    fn PassNullableShort(&self, _: Option<i16>);
+    fn PassNullableUnsignedShort(&self, _: Option<u16>);
+    fn PassNullableLong(&self, _: Option<i32>);
+    fn PassNullableUnsignedLong(&self, _: Option<u32>);
+    fn PassNullableLongLong(&self, _: Option<i64>);
+    fn PassNullableUnsignedLongLong(&self, _: Option<u64>);
+    fn PassNullableFloat(&self, _: Option<f32>);
+    fn PassNullableDouble(&self, _: Option<f64>);
+    fn PassNullableString(&self, _: Option<DOMString>);
+    fn PassNullableByteString(&self, _: Option<ByteString>) {}
+    // fn PassNullableEnum(&self, _: Option<TestEnum>);
+    fn PassNullableInterface(&self, _: Option<JSRef<Blob>>);
+    fn PassNullableUnion(&self, _: Option<HTMLElementOrLong>);
+    fn PassNullableAny(&self, _: *JSContext, _: Option<JSVal>);
+
+    fn PassOptionalBoolean(&self, _: Option<bool>);
+    fn PassOptionalByte(&self, _: Option<i8>);
+    fn PassOptionalOctet(&self, _: Option<u8>);
+    fn PassOptionalShort(&self, _: Option<i16>);
+    fn PassOptionalUnsignedShort(&self, _: Option<u16>);
+    fn PassOptionalLong(&self, _: Option<i32>);
+    fn PassOptionalUnsignedLong(&self, _: Option<u32>);
+    fn PassOptionalLongLong(&self, _: Option<i64>);
+    fn PassOptionalUnsignedLongLong(&self, _: Option<u64>);
+    fn PassOptionalFloat(&self, _: Option<f32>);
+    fn PassOptionalDouble(&self, _: Option<f64>);
+    fn PassOptionalString(&self, _: Option<DOMString>);
+    fn PassOptionalByteString(&self, _: Option<ByteString>) {}
+    fn PassOptionalEnum(&self, _: Option<TestEnum>);
+    fn PassOptionalInterface(&self, _: Option<JSRef<Blob>>);
+    fn PassOptionalUnion(&self, _: Option<HTMLElementOrLong>);
+    fn PassOptionalAny(&self, _: *JSContext, _: Option<JSVal>);
+
+    fn PassOptionalNullableBoolean(&self, _: Option<Option<bool>>);
+    fn PassOptionalNullableByte(&self, _: Option<Option<i8>>);
+    fn PassOptionalNullableOctet(&self, _: Option<Option<u8>>);
+    fn PassOptionalNullableShort(&self, _: Option<Option<i16>>);
+    fn PassOptionalNullableUnsignedShort(&self, _: Option<Option<u16>>);
+    fn PassOptionalNullableLong(&self, _: Option<Option<i32>>);
+    fn PassOptionalNullableUnsignedLong(&self, _: Option<Option<u32>>);
+    fn PassOptionalNullableLongLong(&self, _: Option<Option<i64>>);
+    fn PassOptionalNullableUnsignedLongLong(&self, _: Option<Option<u64>>);
+    fn PassOptionalNullableFloat(&self, _: Option<Option<f32>>);
+    fn PassOptionalNullableDouble(&self, _: Option<Option<f64>>);
+    fn PassOptionalNullableString(&self, _: Option<Option<DOMString>>);
+    fn PassOptionalNullableByteString(&self, _: Option<Option<ByteString>>) {}
+    // fn PassOptionalNullableEnum(&self, _: Option<Option<TestEnum>>);
+    fn PassOptionalNullableInterface(&self, _: Option<Option<JS<Blob>>>);
+    fn PassOptionalNullableUnion(&self, _: Option<Option<HTMLElementOrLong>>);
+
+    fn PassOptionalBooleanWithDefault(&self, _: bool);
+    fn PassOptionalByteWithDefault(&self, _: i8);
+    fn PassOptionalOctetWithDefault(&self, _: u8);
+    fn PassOptionalShortWithDefault(&self, _: i16);
+    fn PassOptionalUnsignedShortWithDefault(&self, _: u16);
+    fn PassOptionalLongWithDefault(&self, _: i32);
+    fn PassOptionalUnsignedLongWithDefault(&self, _: u32);
+    fn PassOptionalLongLongWithDefault(&self, _: i64);
+    fn PassOptionalUnsignedLongLongWithDefault(&self, _: u64);
+    fn PassOptionalStringWithDefault(&self, _: DOMString);
+    fn PassOptionalEnumWithDefault(&self, _: TestEnum);
+
+    fn PassOptionalNullableBooleanWithDefault(&self, _: Option<bool>);
+    fn PassOptionalNullableByteWithDefault(&self, _: Option<i8>);
+    fn PassOptionalNullableOctetWithDefault(&self, _: Option<u8>);
+    fn PassOptionalNullableShortWithDefault(&self, _: Option<i16>);
+    fn PassOptionalNullableUnsignedShortWithDefault(&self, _: Option<u16>);
+    fn PassOptionalNullableLongWithDefault(&self, _: Option<i32>);
+    fn PassOptionalNullableUnsignedLongWithDefault(&self, _: Option<u32>);
+    fn PassOptionalNullableLongLongWithDefault(&self, _: Option<i64>);
+    fn PassOptionalNullableUnsignedLongLongWithDefault(&self, _: Option<u64>);
+    fn PassOptionalNullableFloatWithDefault(&self, _: Option<f32>);
+    fn PassOptionalNullableDoubleWithDefault(&self, _: Option<f64>);
+    fn PassOptionalNullableStringWithDefault(&self, _: Option<DOMString>);
+    fn PassOptionalNullableByteStringWithDefault(&self, _: Option<ByteString>) {}
+    // fn PassOptionalNullableEnumWithDefault(&self, _: Option<TestEnum>);
+    fn PassOptionalNullableInterfaceWithDefault(&self, _: Option<JSRef<Blob>>);
+    fn PassOptionalNullableUnionWithDefault(&self, _: Option<HTMLElementOrLong>);
+    fn PassOptionalAnyWithDefault(&self, _: *JSContext, _: JSVal);
+
+    fn PassOptionalNullableBooleanWithNonNullDefault(&self, _: Option<bool>);
+    fn PassOptionalNullableByteWithNonNullDefault(&self, _: Option<i8>);
+    fn PassOptionalNullableOctetWithNonNullDefault(&self, _: Option<u8>);
+    fn PassOptionalNullableShortWithNonNullDefault(&self, _: Option<i16>);
+    fn PassOptionalNullableUnsignedShortWithNonNullDefault(&self, _: Option<u16>);
+    fn PassOptionalNullableLongWithNonNullDefault(&self, _: Option<i32>);
+    fn PassOptionalNullableUnsignedLongWithNonNullDefault(&self, _: Option<u32>);
+    fn PassOptionalNullableLongLongWithNonNullDefault(&self, _: Option<i64>);
+    fn PassOptionalNullableUnsignedLongLongWithNonNullDefault(&self, _: Option<u64>);
+    // fn PassOptionalNullableFloatWithNonNullDefault(&self, _: Option<f32>);
+    // fn PassOptionalNullableDoubleWithNonNullDefault(&self, _: Option<f64>);
+    fn PassOptionalNullableStringWithNonNullDefault(&self, _: Option<DOMString>);
+    // fn PassOptionalNullableEnumWithNonNullDefault(&self, _: Option<TestEnum>);
+}
+
+impl<'a> TestBindingMethods for JSRef<'a, TestBinding> {
+    fn BooleanAttribute(&self) -> bool { false }
+    fn SetBooleanAttribute(&self, _: bool) {}
+    fn ByteAttribute(&self) -> i8 { 0 }
+    fn SetByteAttribute(&self, _: i8) {}
+    fn OctetAttribute(&self) -> u8 { 0 }
+    fn SetOctetAttribute(&self, _: u8) {}
+    fn ShortAttribute(&self) -> i16 { 0 }
+    fn SetShortAttribute(&self, _: i16) {}
+    fn UnsignedShortAttribute(&self) -> u16 { 0 }
+    fn SetUnsignedShortAttribute(&self, _: u16) {}
+    fn LongAttribute(&self) -> i32 { 0 }
+    fn SetLongAttribute(&self, _: i32) {}
+    fn UnsignedLongAttribute(&self) -> u32 { 0 }
+    fn SetUnsignedLongAttribute(&self, _: u32) {}
+    fn LongLongAttribute(&self) -> i64 { 0 }
+    fn SetLongLongAttribute(&self, _: i64) {}
+    fn UnsignedLongLongAttribute(&self) -> u64 { 0 }
+    fn SetUnsignedLongLongAttribute(&self, _: u64) {}
+    fn FloatAttribute(&self) -> f32 { 0. }
+    fn SetFloatAttribute(&self, _: f32) {}
+    fn DoubleAttribute(&self) -> f64 { 0. }
+    fn SetDoubleAttribute(&self, _: f64) {}
+    fn StringAttribute(&self) -> DOMString { ~"" }
+    fn SetStringAttribute(&self, _: DOMString) {}
+    fn ByteStringAttribute(&self) -> ByteString { ByteString::new(vec!()) }
+    fn SetByteStringAttribute(&self, _: ByteString) {}
+    fn EnumAttribute(&self) -> TestEnum { _empty }
+    fn SetEnumAttribute(&self, _: TestEnum) {}
+    fn InterfaceAttribute(&self) -> Unrooted<Blob> {
         let roots = RootCollection::new();
         let window = self.window.root(&roots);
         Blob::new(&*window)
     }
-    pub fn SetInterfaceAttribute(&self, _: &JSRef<Blob>) {}
-    pub fn AnyAttribute(&self, _: *JSContext) -> JSVal { NullValue() }
-    pub fn SetAnyAttribute(&self, _: *JSContext, _: JSVal) {}
+    fn SetInterfaceAttribute(&self, _: &JSRef<Blob>) {}
+    fn AnyAttribute(&self, _: *JSContext) -> JSVal { NullValue() }
+    fn SetAnyAttribute(&self, _: *JSContext, _: JSVal) {}
 
-    pub fn GetBooleanAttributeNullable(&self) -> Option<bool> { Some(false) }
-    pub fn SetBooleanAttributeNullable(&self, _: Option<bool>) {}
-    pub fn GetByteAttributeNullable(&self) -> Option<i8> { Some(0) }
-    pub fn SetByteAttributeNullable(&self, _: Option<i8>) {}
-    pub fn GetOctetAttributeNullable(&self) -> Option<u8> { Some(0) }
-    pub fn SetOctetAttributeNullable(&self, _: Option<u8>) {}
-    pub fn GetShortAttributeNullable(&self) -> Option<i16> { Some(0) }
-    pub fn SetShortAttributeNullable(&self, _: Option<i16>) {}
-    pub fn GetUnsignedShortAttributeNullable(&self) -> Option<u16> { Some(0) }
-    pub fn SetUnsignedShortAttributeNullable(&self, _: Option<u16>) {}
-    pub fn GetLongAttributeNullable(&self) -> Option<i32> { Some(0) }
-    pub fn SetLongAttributeNullable(&self, _: Option<i32>) {}
-    pub fn GetUnsignedLongAttributeNullable(&self) -> Option<u32> { Some(0) }
-    pub fn SetUnsignedLongAttributeNullable(&self, _: Option<u32>) {}
-    pub fn GetLongLongAttributeNullable(&self) -> Option<i64> { Some(0) }
-    pub fn SetLongLongAttributeNullable(&self, _: Option<i64>) {}
-    pub fn GetUnsignedLongLongAttributeNullable(&self) -> Option<u64> { Some(0) }
-    pub fn SetUnsignedLongLongAttributeNullable(&self, _: Option<u64>) {}
-    pub fn GetFloatAttributeNullable(&self) -> Option<f32> { Some(0.) }
-    pub fn SetFloatAttributeNullable(&self, _: Option<f32>) {}
-    pub fn GetDoubleAttributeNullable(&self) -> Option<f64> { Some(0.) }
-    pub fn SetDoubleAttributeNullable(&self, _: Option<f64>) {}
-    pub fn GetByteStringAttributeNullable(&self) -> Option<ByteString> { Some(ByteString::new(vec!())) }
-    pub fn SetByteStringAttributeNullable(&self, _: Option<ByteString>) {}
-    pub fn GetStringAttributeNullable(&self) -> Option<DOMString> { Some(~"") }
-    pub fn SetStringAttributeNullable(&self, _: Option<DOMString>) {}
-    pub fn GetEnumAttributeNullable(&self) -> Option<TestEnum> { Some(_empty) }
-    pub fn GetInterfaceAttributeNullable(&self) -> Option<Unrooted<Blob>> {
+    fn GetBooleanAttributeNullable(&self) -> Option<bool> { Some(false) }
+    fn SetBooleanAttributeNullable(&self, _: Option<bool>) {}
+    fn GetByteAttributeNullable(&self) -> Option<i8> { Some(0) }
+    fn SetByteAttributeNullable(&self, _: Option<i8>) {}
+    fn GetOctetAttributeNullable(&self) -> Option<u8> { Some(0) }
+    fn SetOctetAttributeNullable(&self, _: Option<u8>) {}
+    fn GetShortAttributeNullable(&self) -> Option<i16> { Some(0) }
+    fn SetShortAttributeNullable(&self, _: Option<i16>) {}
+    fn GetUnsignedShortAttributeNullable(&self) -> Option<u16> { Some(0) }
+    fn SetUnsignedShortAttributeNullable(&self, _: Option<u16>) {}
+    fn GetLongAttributeNullable(&self) -> Option<i32> { Some(0) }
+    fn SetLongAttributeNullable(&self, _: Option<i32>) {}
+    fn GetUnsignedLongAttributeNullable(&self) -> Option<u32> { Some(0) }
+    fn SetUnsignedLongAttributeNullable(&self, _: Option<u32>) {}
+    fn GetLongLongAttributeNullable(&self) -> Option<i64> { Some(0) }
+    fn SetLongLongAttributeNullable(&self, _: Option<i64>) {}
+    fn GetUnsignedLongLongAttributeNullable(&self) -> Option<u64> { Some(0) }
+    fn SetUnsignedLongLongAttributeNullable(&self, _: Option<u64>) {}
+    fn GetFloatAttributeNullable(&self) -> Option<f32> { Some(0.) }
+    fn SetFloatAttributeNullable(&self, _: Option<f32>) {}
+    fn GetDoubleAttributeNullable(&self) -> Option<f64> { Some(0.) }
+    fn SetDoubleAttributeNullable(&self, _: Option<f64>) {}
+    fn GetByteStringAttributeNullable(&self) -> Option<ByteString> { Some(ByteString::new(vec!())) }
+    fn SetByteStringAttributeNullable(&self, _: Option<ByteString>) {}
+    fn GetStringAttributeNullable(&self) -> Option<DOMString> { Some(~"") }
+    fn SetStringAttributeNullable(&self, _: Option<DOMString>) {}
+    fn GetEnumAttributeNullable(&self) -> Option<TestEnum> { Some(_empty) }
+    fn GetInterfaceAttributeNullable(&self) -> Option<Unrooted<Blob>> {
         let roots = RootCollection::new();
         let window = self.window.root(&roots);
         Some(Blob::new(&(*window)))
     }
-    pub fn SetInterfaceAttributeNullable(&self, _: Option<JSRef<Blob>>) {}
+    fn SetInterfaceAttributeNullable(&self, _: Option<JSRef<Blob>>) {}
 
-    pub fn PassBoolean(&self, _: bool) {}
-    pub fn PassByte(&self, _: i8) {}
-    pub fn PassOctet(&self, _: u8) {}
-    pub fn PassShort(&self, _: i16) {}
-    pub fn PassUnsignedShort(&self, _: u16) {}
-    pub fn PassLong(&self, _: i32) {}
-    pub fn PassUnsignedLong(&self, _: u32) {}
-    pub fn PassLongLong(&self, _: i64) {}
-    pub fn PassUnsignedLongLong(&self, _: u64) {}
-    pub fn PassFloat(&self, _: f32) {}
-    pub fn PassDouble(&self, _: f64) {}
-    pub fn PassString(&self, _: DOMString) {}
-    pub fn PassByteString(&self, _: ByteString) {}
-    pub fn PassEnum(&self, _: TestEnum) {}
-    pub fn PassInterface(&self, _: &JSRef<Blob>) {}
-    pub fn PassUnion(&self, _: HTMLElementOrLong) {}
-    pub fn PassAny(&self, _: *JSContext, _: JSVal) {}
+    fn PassBoolean(&self, _: bool) {}
+    fn PassByte(&self, _: i8) {}
+    fn PassOctet(&self, _: u8) {}
+    fn PassShort(&self, _: i16) {}
+    fn PassUnsignedShort(&self, _: u16) {}
+    fn PassLong(&self, _: i32) {}
+    fn PassUnsignedLong(&self, _: u32) {}
+    fn PassLongLong(&self, _: i64) {}
+    fn PassUnsignedLongLong(&self, _: u64) {}
+    fn PassFloat(&self, _: f32) {}
+    fn PassDouble(&self, _: f64) {}
+    fn PassString(&self, _: DOMString) {}
+    fn PassByteString(&self, _: ByteString) {}
+    fn PassEnum(&self, _: TestEnum) {}
+    fn PassInterface(&self, _: &JSRef<Blob>) {}
+    fn PassUnion(&self, _: HTMLElementOrLong) {}
+    fn PassAny(&self, _: *JSContext, _: JSVal) {}
 
-    pub fn PassNullableBoolean(&self, _: Option<bool>) {}
-    pub fn PassNullableByte(&self, _: Option<i8>) {}
-    pub fn PassNullableOctet(&self, _: Option<u8>) {}
-    pub fn PassNullableShort(&self, _: Option<i16>) {}
-    pub fn PassNullableUnsignedShort(&self, _: Option<u16>) {}
-    pub fn PassNullableLong(&self, _: Option<i32>) {}
-    pub fn PassNullableUnsignedLong(&self, _: Option<u32>) {}
-    pub fn PassNullableLongLong(&self, _: Option<i64>) {}
-    pub fn PassNullableUnsignedLongLong(&self, _: Option<u64>) {}
-    pub fn PassNullableFloat(&self, _: Option<f32>) {}
-    pub fn PassNullableDouble(&self, _: Option<f64>) {}
-    pub fn PassNullableString(&self, _: Option<DOMString>) {}
-    pub fn PassNullableByteString(&self, _: Option<ByteString>) {}
-    // pub fn PassNullableEnum(&self, _: Option<TestEnum>) {}
-    pub fn PassNullableInterface(&self, _: Option<JSRef<Blob>>) {}
-    pub fn PassNullableUnion(&self, _: Option<HTMLElementOrLong>) {}
-    pub fn PassNullableAny(&self, _: *JSContext, _: Option<JSVal>) {}
+    fn PassNullableBoolean(&self, _: Option<bool>) {}
+    fn PassNullableByte(&self, _: Option<i8>) {}
+    fn PassNullableOctet(&self, _: Option<u8>) {}
+    fn PassNullableShort(&self, _: Option<i16>) {}
+    fn PassNullableUnsignedShort(&self, _: Option<u16>) {}
+    fn PassNullableLong(&self, _: Option<i32>) {}
+    fn PassNullableUnsignedLong(&self, _: Option<u32>) {}
+    fn PassNullableLongLong(&self, _: Option<i64>) {}
+    fn PassNullableUnsignedLongLong(&self, _: Option<u64>) {}
+    fn PassNullableFloat(&self, _: Option<f32>) {}
+    fn PassNullableDouble(&self, _: Option<f64>) {}
+    fn PassNullableString(&self, _: Option<DOMString>) {}
+    fn PassNullableByteString(&self, _: Option<ByteString>) {}
+    // fn PassNullableEnum(&self, _: Option<TestEnum>) {}
+    fn PassNullableInterface(&self, _: Option<JSRef<Blob>>) {}
+    fn PassNullableUnion(&self, _: Option<HTMLElementOrLong>) {}
+    fn PassNullableAny(&self, _: *JSContext, _: Option<JSVal>) {}
 
-    pub fn PassOptionalBoolean(&self, _: Option<bool>) {}
-    pub fn PassOptionalByte(&self, _: Option<i8>) {}
-    pub fn PassOptionalOctet(&self, _: Option<u8>) {}
-    pub fn PassOptionalShort(&self, _: Option<i16>) {}
-    pub fn PassOptionalUnsignedShort(&self, _: Option<u16>) {}
-    pub fn PassOptionalLong(&self, _: Option<i32>) {}
-    pub fn PassOptionalUnsignedLong(&self, _: Option<u32>) {}
-    pub fn PassOptionalLongLong(&self, _: Option<i64>) {}
-    pub fn PassOptionalUnsignedLongLong(&self, _: Option<u64>) {}
-    pub fn PassOptionalFloat(&self, _: Option<f32>) {}
-    pub fn PassOptionalDouble(&self, _: Option<f64>) {}
-    pub fn PassOptionalString(&self, _: Option<DOMString>) {}
-    pub fn PassOptionalByteString(&self, _: Option<ByteString>) {}
-    pub fn PassOptionalEnum(&self, _: Option<TestEnum>) {}
-    pub fn PassOptionalInterface(&self, _: Option<JSRef<Blob>>) {}
-    pub fn PassOptionalUnion(&self, _: Option<HTMLElementOrLong>) {}
-    pub fn PassOptionalAny(&self, _: *JSContext, _: Option<JSVal>) {}
+    fn PassOptionalBoolean(&self, _: Option<bool>) {}
+    fn PassOptionalByte(&self, _: Option<i8>) {}
+    fn PassOptionalOctet(&self, _: Option<u8>) {}
+    fn PassOptionalShort(&self, _: Option<i16>) {}
+    fn PassOptionalUnsignedShort(&self, _: Option<u16>) {}
+    fn PassOptionalLong(&self, _: Option<i32>) {}
+    fn PassOptionalUnsignedLong(&self, _: Option<u32>) {}
+    fn PassOptionalLongLong(&self, _: Option<i64>) {}
+    fn PassOptionalUnsignedLongLong(&self, _: Option<u64>) {}
+    fn PassOptionalFloat(&self, _: Option<f32>) {}
+    fn PassOptionalDouble(&self, _: Option<f64>) {}
+    fn PassOptionalString(&self, _: Option<DOMString>) {}
+    fn PassOptionalByteString(&self, _: Option<ByteString>) {}
+    fn PassOptionalEnum(&self, _: Option<TestEnum>) {}
+    fn PassOptionalInterface(&self, _: Option<JSRef<Blob>>) {}
+    fn PassOptionalUnion(&self, _: Option<HTMLElementOrLong>) {}
+    fn PassOptionalAny(&self, _: *JSContext, _: Option<JSVal>) {}
 
-    pub fn PassOptionalNullableBoolean(&self, _: Option<Option<bool>>) {}
-    pub fn PassOptionalNullableByte(&self, _: Option<Option<i8>>) {}
-    pub fn PassOptionalNullableOctet(&self, _: Option<Option<u8>>) {}
-    pub fn PassOptionalNullableShort(&self, _: Option<Option<i16>>) {}
-    pub fn PassOptionalNullableUnsignedShort(&self, _: Option<Option<u16>>) {}
-    pub fn PassOptionalNullableLong(&self, _: Option<Option<i32>>) {}
-    pub fn PassOptionalNullableUnsignedLong(&self, _: Option<Option<u32>>) {}
-    pub fn PassOptionalNullableLongLong(&self, _: Option<Option<i64>>) {}
-    pub fn PassOptionalNullableUnsignedLongLong(&self, _: Option<Option<u64>>) {}
-    pub fn PassOptionalNullableFloat(&self, _: Option<Option<f32>>) {}
-    pub fn PassOptionalNullableDouble(&self, _: Option<Option<f64>>) {}
-    pub fn PassOptionalNullableString(&self, _: Option<Option<DOMString>>) {}
-    pub fn PassOptionalNullableByteString(&self, _: Option<Option<ByteString>>) {}
-    // pub fn PassOptionalNullableEnum(&self, _: Option<Option<TestEnum>>) {}
-    pub fn PassOptionalNullableInterface(&self, _: Option<Option<JS<Blob>>>) {}
-    pub fn PassOptionalNullableUnion(&self, _: Option<Option<HTMLElementOrLong>>) {}
+    fn PassOptionalNullableBoolean(&self, _: Option<Option<bool>>) {}
+    fn PassOptionalNullableByte(&self, _: Option<Option<i8>>) {}
+    fn PassOptionalNullableOctet(&self, _: Option<Option<u8>>) {}
+    fn PassOptionalNullableShort(&self, _: Option<Option<i16>>) {}
+    fn PassOptionalNullableUnsignedShort(&self, _: Option<Option<u16>>) {}
+    fn PassOptionalNullableLong(&self, _: Option<Option<i32>>) {}
+    fn PassOptionalNullableUnsignedLong(&self, _: Option<Option<u32>>) {}
+    fn PassOptionalNullableLongLong(&self, _: Option<Option<i64>>) {}
+    fn PassOptionalNullableUnsignedLongLong(&self, _: Option<Option<u64>>) {}
+    fn PassOptionalNullableFloat(&self, _: Option<Option<f32>>) {}
+    fn PassOptionalNullableDouble(&self, _: Option<Option<f64>>) {}
+    fn PassOptionalNullableString(&self, _: Option<Option<DOMString>>) {}
+    fn PassOptionalNullableByteString(&self, _: Option<Option<ByteString>>) {}
+    // fn PassOptionalNullableEnum(&self, _: Option<Option<TestEnum>>) {}
+    fn PassOptionalNullableInterface(&self, _: Option<Option<JS<Blob>>>) {}
+    fn PassOptionalNullableUnion(&self, _: Option<Option<HTMLElementOrLong>>) {}
 
-    pub fn PassOptionalBooleanWithDefault(&self, _: bool) {}
-    pub fn PassOptionalByteWithDefault(&self, _: i8) {}
-    pub fn PassOptionalOctetWithDefault(&self, _: u8) {}
-    pub fn PassOptionalShortWithDefault(&self, _: i16) {}
-    pub fn PassOptionalUnsignedShortWithDefault(&self, _: u16) {}
-    pub fn PassOptionalLongWithDefault(&self, _: i32) {}
-    pub fn PassOptionalUnsignedLongWithDefault(&self, _: u32) {}
-    pub fn PassOptionalLongLongWithDefault(&self, _: i64) {}
-    pub fn PassOptionalUnsignedLongLongWithDefault(&self, _: u64) {}
-    pub fn PassOptionalStringWithDefault(&self, _: DOMString) {}
-    pub fn PassOptionalEnumWithDefault(&self, _: TestEnum) {}
+    fn PassOptionalBooleanWithDefault(&self, _: bool) {}
+    fn PassOptionalByteWithDefault(&self, _: i8) {}
+    fn PassOptionalOctetWithDefault(&self, _: u8) {}
+    fn PassOptionalShortWithDefault(&self, _: i16) {}
+    fn PassOptionalUnsignedShortWithDefault(&self, _: u16) {}
+    fn PassOptionalLongWithDefault(&self, _: i32) {}
+    fn PassOptionalUnsignedLongWithDefault(&self, _: u32) {}
+    fn PassOptionalLongLongWithDefault(&self, _: i64) {}
+    fn PassOptionalUnsignedLongLongWithDefault(&self, _: u64) {}
+    fn PassOptionalStringWithDefault(&self, _: DOMString) {}
+    fn PassOptionalEnumWithDefault(&self, _: TestEnum) {}
 
-    pub fn PassOptionalNullableBooleanWithDefault(&self, _: Option<bool>) {}
-    pub fn PassOptionalNullableByteWithDefault(&self, _: Option<i8>) {}
-    pub fn PassOptionalNullableOctetWithDefault(&self, _: Option<u8>) {}
-    pub fn PassOptionalNullableShortWithDefault(&self, _: Option<i16>) {}
-    pub fn PassOptionalNullableUnsignedShortWithDefault(&self, _: Option<u16>) {}
-    pub fn PassOptionalNullableLongWithDefault(&self, _: Option<i32>) {}
-    pub fn PassOptionalNullableUnsignedLongWithDefault(&self, _: Option<u32>) {}
-    pub fn PassOptionalNullableLongLongWithDefault(&self, _: Option<i64>) {}
-    pub fn PassOptionalNullableUnsignedLongLongWithDefault(&self, _: Option<u64>) {}
-    pub fn PassOptionalNullableFloatWithDefault(&self, _: Option<f32>) {}
-    pub fn PassOptionalNullableDoubleWithDefault(&self, _: Option<f64>) {}
-    pub fn PassOptionalNullableStringWithDefault(&self, _: Option<DOMString>) {}
-    pub fn PassOptionalNullableByteStringWithDefault(&self, _: Option<ByteString>) {}
-    // pub fn PassOptionalNullableEnumWithDefault(&self, _: Option<TestEnum>) {}
-    pub fn PassOptionalNullableInterfaceWithDefault(&self, _: Option<JSRef<Blob>>) {}
-    pub fn PassOptionalNullableUnionWithDefault(&self, _: Option<HTMLElementOrLong>) {}
-    pub fn PassOptionalAnyWithDefault(&self, _: *JSContext, _: JSVal) {}
+    fn PassOptionalNullableBooleanWithDefault(&self, _: Option<bool>) {}
+    fn PassOptionalNullableByteWithDefault(&self, _: Option<i8>) {}
+    fn PassOptionalNullableOctetWithDefault(&self, _: Option<u8>) {}
+    fn PassOptionalNullableShortWithDefault(&self, _: Option<i16>) {}
+    fn PassOptionalNullableUnsignedShortWithDefault(&self, _: Option<u16>) {}
+    fn PassOptionalNullableLongWithDefault(&self, _: Option<i32>) {}
+    fn PassOptionalNullableUnsignedLongWithDefault(&self, _: Option<u32>) {}
+    fn PassOptionalNullableLongLongWithDefault(&self, _: Option<i64>) {}
+    fn PassOptionalNullableUnsignedLongLongWithDefault(&self, _: Option<u64>) {}
+    fn PassOptionalNullableFloatWithDefault(&self, _: Option<f32>) {}
+    fn PassOptionalNullableDoubleWithDefault(&self, _: Option<f64>) {}
+    fn PassOptionalNullableStringWithDefault(&self, _: Option<DOMString>) {}
+    fn PassOptionalNullableByteStringWithDefault(&self, _: Option<ByteString>) {}
+    // fn PassOptionalNullableEnumWithDefault(&self, _: Option<TestEnum>) {}
+    fn PassOptionalNullableInterfaceWithDefault(&self, _: Option<JSRef<Blob>>) {}
+    fn PassOptionalNullableUnionWithDefault(&self, _: Option<HTMLElementOrLong>) {}
+    fn PassOptionalAnyWithDefault(&self, _: *JSContext, _: JSVal) {}
 
-    pub fn PassOptionalNullableBooleanWithNonNullDefault(&self, _: Option<bool>) {}
-    pub fn PassOptionalNullableByteWithNonNullDefault(&self, _: Option<i8>) {}
-    pub fn PassOptionalNullableOctetWithNonNullDefault(&self, _: Option<u8>) {}
-    pub fn PassOptionalNullableShortWithNonNullDefault(&self, _: Option<i16>) {}
-    pub fn PassOptionalNullableUnsignedShortWithNonNullDefault(&self, _: Option<u16>) {}
-    pub fn PassOptionalNullableLongWithNonNullDefault(&self, _: Option<i32>) {}
-    pub fn PassOptionalNullableUnsignedLongWithNonNullDefault(&self, _: Option<u32>) {}
-    pub fn PassOptionalNullableLongLongWithNonNullDefault(&self, _: Option<i64>) {}
-    pub fn PassOptionalNullableUnsignedLongLongWithNonNullDefault(&self, _: Option<u64>) {}
-    // pub fn PassOptionalNullableFloatWithNonNullDefault(&self, _: Option<f32>) {}
-    // pub fn PassOptionalNullableDoubleWithNonNullDefault(&self, _: Option<f64>) {}
-    pub fn PassOptionalNullableStringWithNonNullDefault(&self, _: Option<DOMString>) {}
-    // pub fn PassOptionalNullableEnumWithNonNullDefault(&self, _: Option<TestEnum>) {}
+    fn PassOptionalNullableBooleanWithNonNullDefault(&self, _: Option<bool>) {}
+    fn PassOptionalNullableByteWithNonNullDefault(&self, _: Option<i8>) {}
+    fn PassOptionalNullableOctetWithNonNullDefault(&self, _: Option<u8>) {}
+    fn PassOptionalNullableShortWithNonNullDefault(&self, _: Option<i16>) {}
+    fn PassOptionalNullableUnsignedShortWithNonNullDefault(&self, _: Option<u16>) {}
+    fn PassOptionalNullableLongWithNonNullDefault(&self, _: Option<i32>) {}
+    fn PassOptionalNullableUnsignedLongWithNonNullDefault(&self, _: Option<u32>) {}
+    fn PassOptionalNullableLongLongWithNonNullDefault(&self, _: Option<i64>) {}
+    fn PassOptionalNullableUnsignedLongLongWithNonNullDefault(&self, _: Option<u64>) {}
+    // fn PassOptionalNullableFloatWithNonNullDefault(&self, _: Option<f32>) {}
+    // fn PassOptionalNullableDoubleWithNonNullDefault(&self, _: Option<f64>) {}
+    fn PassOptionalNullableStringWithNonNullDefault(&self, _: Option<DOMString>) {}
+    // fn PassOptionalNullableEnumWithNonNullDefault(&self, _: Option<TestEnum>) {}
 }
 
 impl Reflectable for TestBinding {
diff --git a/src/components/script/dom/text.rs b/src/components/script/dom/text.rs
index cdcfdac6af3..570c1412833 100644
--- a/src/components/script/dom/text.rs
+++ b/src/components/script/dom/text.rs
@@ -10,7 +10,7 @@ use dom::characterdata::CharacterData;
 use dom::document::Document;
 use dom::eventtarget::{EventTarget, NodeTargetTypeId};
 use dom::node::{Node, TextNodeTypeId};
-use dom::window::Window;
+use dom::window::{Window, WindowMethods};
 use servo_util::str::DOMString;
 
 /// An HTML text node.
@@ -42,16 +42,23 @@ impl Text {
 
     pub fn Constructor(owner: &JSRef<Window>, text: DOMString) -> Fallible<Unrooted<Text>> {
         let roots = RootCollection::new();
-        let document = owner.get().Document();
-        let document = document.root(&roots);
-        Ok(Text::new(text.clone(), &document.root_ref()))
+        let document = owner.Document().root(&roots);
+        Ok(Text::new(text.clone(), &*document))
     }
+}
 
-    pub fn SplitText(&self, _offset: u32) -> Fallible<Unrooted<Text>> {
+pub trait TextMethods {
+    fn SplitText(&self, _offset: u32) -> Fallible<Unrooted<Text>>;
+    fn GetWholeText(&self) -> Fallible<DOMString>;
+}
+
+impl<'a> TextMethods for JSRef<'a, Text> {
+    fn SplitText(&self, _offset: u32) -> Fallible<Unrooted<Text>> {
         fail!("unimplemented")
     }
 
-    pub fn GetWholeText(&self) -> Fallible<DOMString> {
+    fn GetWholeText(&self) -> Fallible<DOMString> {
         Ok(~"")
     }
 }
+
diff --git a/src/components/script/dom/uievent.rs b/src/components/script/dom/uievent.rs
index f42edeb42bf..cb1365181e5 100644
--- a/src/components/script/dom/uievent.rs
+++ b/src/components/script/dom/uievent.rs
@@ -3,11 +3,11 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use dom::bindings::codegen::BindingDeclarations::UIEventBinding;
-use dom::bindings::codegen::InheritTypes::UIEventDerived;
+use dom::bindings::codegen::InheritTypes::{EventCast, UIEventDerived};
 use dom::bindings::js::{JS, JSRef, RootCollection, RootedReference, Unrooted};
 use dom::bindings::error::Fallible;
 use dom::bindings::utils::{Reflectable, Reflector, reflect_dom_object};
-use dom::event::{Event, EventTypeId, UIEventTypeId};
+use dom::event::{Event, EventMethods, EventTypeId, UIEventTypeId};
 use dom::node::Node;
 use dom::window::Window;
 use servo_util::str::DOMString;
@@ -48,80 +48,107 @@ impl UIEvent {
         let roots = RootCollection::new();
         let mut ev = UIEvent::new(owner).root(&roots);
         let view = init.view.as_ref().map(|view| view.root(&roots));
-        ev.get_mut().InitUIEvent(type_, init.parent.bubbles, init.parent.cancelable,
-                                 view.root_ref(), init.detail);
+        ev.InitUIEvent(type_, init.parent.bubbles, init.parent.cancelable,
+                       view.root_ref(), init.detail);
         Ok(Unrooted::new_rooted(&*ev))
     }
+}
 
-    pub fn GetView(&self) -> Option<Unrooted<Window>> {
+pub trait UIEventMethods {
+    fn GetView(&self) -> Option<Unrooted<Window>>;
+    fn Detail(&self) -> i32;
+    fn LayerX(&self) -> i32;
+    fn LayerY(&self) -> i32;
+    fn PageX(&self) -> i32;
+    fn PageY(&self) -> i32;
+    fn Which(&self) -> u32;
+    fn GetRangeParent(&self) -> Option<Unrooted<Node>>;
+    fn RangeOffset(&self) -> i32;
+    fn CancelBubble(&self) -> bool;
+    fn SetCancelBubble(&mut self, _val: bool);
+    fn IsChar(&self) -> bool;
+    fn InitUIEvent(&mut self,
+                   type_: DOMString,
+                   can_bubble: bool,
+                   cancelable: bool,
+                   view: Option<JSRef<Window>>,
+                   detail: i32);
+}
+
+impl<'a> UIEventMethods for JSRef<'a, UIEvent> {
+    fn GetView(&self) -> Option<Unrooted<Window>> {
         self.view.clone().map(|view| Unrooted::new(view))
     }
 
-    pub fn Detail(&self) -> i32 {
+    fn Detail(&self) -> i32 {
         self.detail
     }
 
-    pub fn InitUIEvent(&mut self,
-                       type_: DOMString,
-                       can_bubble: bool,
-                       cancelable: bool,
-                       view: Option<JSRef<Window>>,
-                       detail: i32) {
-        self.event.InitEvent(type_, can_bubble, cancelable);
+    fn InitUIEvent(&mut self,
+                   type_: DOMString,
+                   can_bubble: bool,
+                   cancelable: bool,
+                   view: Option<JSRef<Window>>,
+                   detail: i32) {
+        {
+            let event: &mut JSRef<Event> = EventCast::from_mut_ref(self);
+            event.InitEvent(type_, can_bubble, cancelable);
+        }
         self.view = view.map(|view| view.unrooted());
         self.detail = detail;
     }
 
-    pub fn LayerX(&self) -> i32 {
+    fn LayerX(&self) -> i32 {
         //TODO
         0
     }
 
-    pub fn LayerY(&self) -> i32 {
+    fn LayerY(&self) -> i32 {
         //TODO
         0
     }
 
-    pub fn PageX(&self) -> i32 {
+    fn PageX(&self) -> i32 {
         //TODO
         0
     }
 
-    pub fn PageY(&self) -> i32 {
+    fn PageY(&self) -> i32 {
         //TODO
         0
     }
 
-    pub fn Which(&self) -> u32 {
+    fn Which(&self) -> u32 {
         //TODO
         0
     }
 
-    pub fn GetRangeParent(&self) -> Option<Unrooted<Node>> {
+    fn GetRangeParent(&self) -> Option<Unrooted<Node>> {
         //TODO
         None
     }
 
-    pub fn RangeOffset(&self) -> i32 {
+    fn RangeOffset(&self) -> i32 {
         //TODO
         0
     }
 
-    pub fn CancelBubble(&self) -> bool {
+    fn CancelBubble(&self) -> bool {
         //TODO
         false
     }
 
-    pub fn SetCancelBubble(&mut self, _val: bool) {
+    fn SetCancelBubble(&mut self, _val: bool) {
         //TODO
     }
 
-    pub fn IsChar(&self) -> bool {
+    fn IsChar(&self) -> bool {
         //TODO
         false
     }
 }
 
+
 impl Reflectable for UIEvent {
     fn reflector<'a>(&'a self) -> &'a Reflector {
         self.event.reflector()
diff --git a/src/components/script/dom/validitystate.rs b/src/components/script/dom/validitystate.rs
index 02b0b9a7a11..d4d829f842b 100644
--- a/src/components/script/dom/validitystate.rs
+++ b/src/components/script/dom/validitystate.rs
@@ -30,44 +30,57 @@ impl ValidityState {
     }
 }
 
-impl ValidityState {
-    pub fn ValueMissing(&self) -> bool {
+pub trait ValidityStateMethods {
+    fn ValueMissing(&self) -> bool;
+    fn TypeMismatch(&self) -> bool;
+    fn PatternMismatch(&self) -> bool;
+    fn TooLong(&self) -> bool;
+    fn RangeUnderflow(&self) -> bool;
+    fn RangeOverflow(&self) -> bool;
+    fn StepMismatch(&self) -> bool;
+    fn CustomError(&self) -> bool;
+    fn Valid(&self) -> bool;
+}
+
+impl<'a> ValidityStateMethods for JSRef<'a, ValidityState> {
+    fn ValueMissing(&self) -> bool {
         false
     }
 
-    pub fn TypeMismatch(&self) -> bool {
+    fn TypeMismatch(&self) -> bool {
         false
     }
 
-    pub fn PatternMismatch(&self) -> bool {
+    fn PatternMismatch(&self) -> bool {
         false
     }
 
-    pub fn TooLong(&self) -> bool {
+    fn TooLong(&self) -> bool {
         false
     }
 
-    pub fn RangeUnderflow(&self) -> bool {
+    fn RangeUnderflow(&self) -> bool {
         false
     }
 
-    pub fn RangeOverflow(&self) -> bool {
+    fn RangeOverflow(&self) -> bool {
         false
     }
 
-    pub fn StepMismatch(&self) -> bool {
+    fn StepMismatch(&self) -> bool {
         false
     }
 
-    pub fn CustomError(&self) -> bool {
+    fn CustomError(&self) -> bool {
         false
     }
 
-    pub fn Valid(&self) -> bool {
+    fn Valid(&self) -> bool {
         true
     }
 }
 
+
 impl Reflectable for ValidityState {
     fn reflector<'a>(&'a self) -> &'a Reflector {
         &self.reflector_
diff --git a/src/components/script/dom/window.rs b/src/components/script/dom/window.rs
index ff46c27ed79..dda1a0fa295 100644
--- a/src/components/script/dom/window.rs
+++ b/src/components/script/dom/window.rs
@@ -105,88 +105,146 @@ pub struct TimerData {
     pub funval: Traceable<JSVal>,
 }
 
-impl Window {
-    pub fn Alert(&self, s: DOMString) {
+pub trait WindowMethods {
+    fn Alert(&self, s: DOMString);
+    fn Close(&self);
+    fn Document(&self) -> Unrooted<Document>;
+    fn Name(&self) -> DOMString;
+    fn SetName(&self, _name: DOMString);
+    fn Status(&self) -> DOMString;
+    fn SetStatus(&self, _status: DOMString);
+    fn Closed(&self) -> bool;
+    fn Stop(&self);
+    fn Focus(&self);
+    fn Blur(&self);
+    fn GetFrameElement(&self) -> Option<Unrooted<Element>>;
+    fn Location(&mut self, abstract_self: &JSRef<Window>) -> Unrooted<Location>;
+    fn Console(&mut self, abstract_self: &JSRef<Window>) -> Unrooted<Console>;
+    fn Navigator(&mut self, abstract_self: &JSRef<Window>) -> Unrooted<Navigator>;
+    fn Confirm(&self, _message: DOMString) -> bool;
+    fn Prompt(&self, _message: DOMString, _default: DOMString) -> Option<DOMString>;
+    fn Print(&self);
+    fn ShowModalDialog(&self, _cx: *JSContext, _url: DOMString, _argument: Option<JSVal>) -> JSVal;
+    fn SetTimeout(&mut self, _cx: *JSContext, callback: JSVal, timeout: i32) -> i32;
+    fn ClearTimeout(&mut self, handle: i32);
+    fn SetInterval(&mut self, _cx: *JSContext, callback: JSVal, timeout: i32) -> i32;
+    fn ClearInterval(&mut self, handle: i32);
+    fn Window(&self, abstract_self: &JSRef<Window>) -> Unrooted<Window>;
+    fn Self(&self, abstract_self: &JSRef<Window>) -> Unrooted<Window>;
+}
+
+impl<'a> WindowMethods for JSRef<'a, Window> {
+    fn Alert(&self, s: DOMString) {
         // Right now, just print to the console
         println!("ALERT: {:s}", s);
     }
 
-    pub fn Close(&self) {
+    fn Close(&self) {
         let ScriptChan(ref chan) = self.script_chan;
         chan.send(ExitWindowMsg(self.page.id.clone()));
     }
 
-    pub fn Document(&self) -> Unrooted<Document> {
+    fn Document(&self) -> Unrooted<Document> {
         let frame = self.page().frame();
         Unrooted::new(frame.get_ref().document.clone())
     }
 
-    pub fn Name(&self) -> DOMString {
+    fn Name(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetName(&self, _name: DOMString) {
+    fn SetName(&self, _name: DOMString) {
     }
 
-    pub fn Status(&self) -> DOMString {
+    fn Status(&self) -> DOMString {
         ~""
     }
 
-    pub fn SetStatus(&self, _status: DOMString) {
+    fn SetStatus(&self, _status: DOMString) {
     }
 
-    pub fn Closed(&self) -> bool {
+    fn Closed(&self) -> bool {
         false
     }
 
-    pub fn Stop(&self) {
+    fn Stop(&self) {
     }
 
-    pub fn Focus(&self) {
+    fn Focus(&self) {
     }
 
-    pub fn Blur(&self) {
+    fn Blur(&self) {
     }
 
-    pub fn GetFrameElement(&self) -> Option<Unrooted<Element>> {
+    fn GetFrameElement(&self) -> Option<Unrooted<Element>> {
         None
     }
 
-    pub fn Location(&mut self, abstract_self: &JSRef<Window>) -> Unrooted<Location> {
+    fn Location(&mut self, abstract_self: &JSRef<Window>) -> Unrooted<Location> {
         if self.location.is_none() {
-            self.location.assign(Some(Location::new(abstract_self, self.page.clone())));
+            let page = self.deref().page.clone();
+            self.location.assign(Some(Location::new(abstract_self, page)));
         }
         Unrooted::new(self.location.get_ref().clone())
     }
 
-    pub fn Console(&mut self, abstract_self: &JSRef<Window>) -> Unrooted<Console> {
+    fn Console(&mut self, abstract_self: &JSRef<Window>) -> Unrooted<Console> {
         if self.console.is_none() {
             self.console.assign(Some(Console::new(abstract_self)));
         }
         Unrooted::new(self.console.get_ref().clone())
     }
 
-    pub fn Navigator(&mut self, abstract_self: &JSRef<Window>) -> Unrooted<Navigator> {
+    fn Navigator(&mut self, abstract_self: &JSRef<Window>) -> Unrooted<Navigator> {
         if self.navigator.is_none() {
             self.navigator.assign(Some(Navigator::new(abstract_self)));
         }
         Unrooted::new(self.navigator.get_ref().clone())
     }
 
-    pub fn Confirm(&self, _message: DOMString) -> bool {
+    fn Confirm(&self, _message: DOMString) -> bool {
         false
     }
 
-    pub fn Prompt(&self, _message: DOMString, _default: DOMString) -> Option<DOMString> {
+    fn Prompt(&self, _message: DOMString, _default: DOMString) -> Option<DOMString> {
         None
     }
 
-    pub fn Print(&self) {
+    fn Print(&self) {
     }
 
-    pub fn ShowModalDialog(&self, _cx: *JSContext, _url: DOMString, _argument: Option<JSVal>) -> JSVal {
+    fn ShowModalDialog(&self, _cx: *JSContext, _url: DOMString, _argument: Option<JSVal>) -> JSVal {
         NullValue()
     }
+
+    fn SetTimeout(&mut self, _cx: *JSContext, callback: JSVal, timeout: i32) -> i32 {
+        self.set_timeout_or_interval(callback, timeout, false)
+    }
+
+    fn ClearTimeout(&mut self, handle: i32) {
+        let mut timer_handle = self.active_timers.pop(&TimerId(handle));
+        match timer_handle {
+            Some(ref mut handle) => handle.cancel(),
+            None => { }
+        }
+        self.active_timers.remove(&TimerId(handle));
+    }
+
+    fn SetInterval(&mut self, _cx: *JSContext, callback: JSVal, timeout: i32) -> i32 {
+        self.set_timeout_or_interval(callback, timeout, true)
+    }
+
+    fn ClearInterval(&mut self, handle: i32) {
+        self.ClearTimeout(handle);
+    }
+
+    fn Window(&self, abstract_self: &JSRef<Window>) -> Unrooted<Window> {
+        Unrooted::new_rooted(abstract_self)
+    }
+
+    fn Self(&self, abstract_self: &JSRef<Window>) -> Unrooted<Window> {
+        self.Window(abstract_self)
+    }
 }
 
 impl Reflectable for Window {
@@ -258,35 +316,6 @@ impl Window {
         handle
     }
 
-    pub fn SetTimeout(&mut self, _cx: *JSContext, callback: JSVal, timeout: i32) -> i32 {
-        self.set_timeout_or_interval(callback, timeout, false)
-    }
-
-    pub fn ClearTimeout(&mut self, handle: i32) {
-        let mut timer_handle = self.active_timers.pop(&TimerId(handle));
-        match timer_handle {
-            Some(ref mut handle) => handle.cancel(),
-            None => { }
-        }
-        self.active_timers.remove(&TimerId(handle));
-    }
-
-    pub fn SetInterval(&mut self, _cx: *JSContext, callback: JSVal, timeout: i32) -> i32 {
-        self.set_timeout_or_interval(callback, timeout, true)
-    }
-
-    pub fn ClearInterval(&mut self, handle: i32) {
-        self.ClearTimeout(handle);
-    }
-
-    pub fn Window(&self, abstract_self: &JSRef<Window>) -> Unrooted<Window> {
-        Unrooted::new_rooted(abstract_self)
-    }
-
-    pub fn Self(&self, abstract_self: &JSRef<Window>) -> Unrooted<Window> {
-        self.Window(abstract_self)
-    }
-
     pub fn damage_and_reflow(&self, damage: DocumentDamageLevel) {
         // FIXME This should probably be ReflowForQuery, not Display. All queries currently
         // currently rely on the display list, which means we can't destroy it by
diff --git a/src/components/script/dom/xmlhttprequest.rs b/src/components/script/dom/xmlhttprequest.rs
index 8327135d566..a0ffa15c772 100644
--- a/src/components/script/dom/xmlhttprequest.rs
+++ b/src/components/script/dom/xmlhttprequest.rs
@@ -66,71 +66,100 @@ impl XMLHttpRequest {
     pub fn Constructor(owner: &JSRef<Window>) -> Fallible<Unrooted<XMLHttpRequest>> {
         Ok(XMLHttpRequest::new(owner))
     }
-    pub fn ReadyState(&self) -> u16 {
+}
+
+pub trait XMLHttpRequestMethods {
+    fn ReadyState(&self) -> u16;
+    fn Open(&self, _method: ByteString, _url: DOMString);
+    fn Open_(&self, _method: ByteString, _url: DOMString, _async: bool,
+             _username: Option<DOMString>, _password: Option<DOMString>);
+    fn SetRequestHeader(&self, _name: ByteString, _value: ByteString);
+    fn Timeout(&self) -> u32;
+    fn SetTimeout(&mut self, timeout: u32);
+    fn WithCredentials(&self) -> bool;
+    fn SetWithCredentials(&mut self, with_credentials: bool);
+    fn Upload(&self) -> Unrooted<XMLHttpRequestUpload>;
+    fn Send(&self, _data: Option<DOMString>);
+    fn Abort(&self);
+    fn ResponseURL(&self) -> DOMString;
+    fn Status(&self) -> u16;
+    fn StatusText(&self) -> ByteString;
+    fn GetResponseHeader(&self, _name: ByteString) -> Option<ByteString>;
+    fn GetAllResponseHeaders(&self) -> ByteString;
+    fn OverrideMimeType(&self, _mime: DOMString);
+    fn ResponseType(&self) -> XMLHttpRequestResponseType;
+    fn SetResponseType(&mut self, response_type: XMLHttpRequestResponseType);
+    fn Response(&self, _cx: *JSContext) -> JSVal;
+    fn ResponseText(&self) -> DOMString;
+    fn GetResponseXML(&self) -> Option<Unrooted<Document>>;
+}
+
+impl<'a> XMLHttpRequestMethods for JSRef<'a, XMLHttpRequest> {
+    fn ReadyState(&self) -> u16 {
         self.ready_state
     }
-    pub fn Open(&self, _method: ByteString, _url: DOMString) {
+    fn Open(&self, _method: ByteString, _url: DOMString) {
 
     }
-    pub fn Open_(&self, _method: ByteString, _url: DOMString, _async: bool,
+    fn Open_(&self, _method: ByteString, _url: DOMString, _async: bool,
                  _username: Option<DOMString>, _password: Option<DOMString>) {
 
     }
-    pub fn SetRequestHeader(&self, _name: ByteString, _value: ByteString) {
+    fn SetRequestHeader(&self, _name: ByteString, _value: ByteString) {
 
     }
-    pub fn Timeout(&self) -> u32 {
+    fn Timeout(&self) -> u32 {
         self.timeout
     }
-    pub fn SetTimeout(&mut self, timeout: u32) {
+    fn SetTimeout(&mut self, timeout: u32) {
         self.timeout = timeout
     }
-    pub fn WithCredentials(&self) -> bool {
+    fn WithCredentials(&self) -> bool {
         self.with_credentials
     }
-    pub fn SetWithCredentials(&mut self, with_credentials: bool) {
+    fn SetWithCredentials(&mut self, with_credentials: bool) {
         self.with_credentials = with_credentials
     }
-    pub fn Upload(&self) -> Unrooted<XMLHttpRequestUpload> {
+    fn Upload(&self) -> Unrooted<XMLHttpRequestUpload> {
         Unrooted::new(self.upload.get_ref().clone())
     }
-    pub fn Send(&self, _data: Option<DOMString>) {
+    fn Send(&self, _data: Option<DOMString>) {
 
     }
-    pub fn Abort(&self) {
+    fn Abort(&self) {
 
     }
-    pub fn ResponseURL(&self) -> DOMString {
+    fn ResponseURL(&self) -> DOMString {
         self.response_url.clone()
     }
-    pub fn Status(&self) -> u16 {
+    fn Status(&self) -> u16 {
         self.status
     }
-    pub fn StatusText(&self) -> ByteString {
+    fn StatusText(&self) -> ByteString {
         self.status_text.clone()
     }
-    pub fn GetResponseHeader(&self, _name: ByteString) -> Option<ByteString> {
+    fn GetResponseHeader(&self, _name: ByteString) -> Option<ByteString> {
         None
     }
-    pub fn GetAllResponseHeaders(&self) -> ByteString {
+    fn GetAllResponseHeaders(&self) -> ByteString {
         ByteString::new(vec!())
     }
-    pub fn OverrideMimeType(&self, _mime: DOMString) {
+    fn OverrideMimeType(&self, _mime: DOMString) {
 
     }
-    pub fn ResponseType(&self) -> XMLHttpRequestResponseType {
+    fn ResponseType(&self) -> XMLHttpRequestResponseType {
         self.response_type
     }
-    pub fn SetResponseType(&mut self, response_type: XMLHttpRequestResponseType) {
+    fn SetResponseType(&mut self, response_type: XMLHttpRequestResponseType) {
         self.response_type = response_type
     }
-    pub fn Response(&self, _cx: *JSContext) -> JSVal {
+    fn Response(&self, _cx: *JSContext) -> JSVal {
         NullValue()
     }
-    pub fn ResponseText(&self) -> DOMString {
+    fn ResponseText(&self) -> DOMString {
         self.response_text.clone()
     }
-    pub fn GetResponseXML(&self) -> Option<Unrooted<Document>> {
+    fn GetResponseXML(&self) -> Option<Unrooted<Document>> {
         self.response_xml.clone().map(|response| Unrooted::new(response))
     }
 }
diff --git a/src/components/script/dom/xmlhttprequesteventtarget.rs b/src/components/script/dom/xmlhttprequesteventtarget.rs
index 55708581a1d..68d67fab89b 100644
--- a/src/components/script/dom/xmlhttprequesteventtarget.rs
+++ b/src/components/script/dom/xmlhttprequesteventtarget.rs
@@ -37,4 +37,7 @@ impl Reflectable for XMLHttpRequestEventTarget {
     fn mut_reflector<'a>(&'a mut self) -> &'a mut Reflector {
         self.eventtarget.mut_reflector()
     }
+}
+
+pub trait XMLHttpRequestEventTargetMethods {
 }
\ No newline at end of file
diff --git a/src/components/script/dom/xmlhttprequestupload.rs b/src/components/script/dom/xmlhttprequestupload.rs
index 8e251dd4e8f..c2332d84ee0 100644
--- a/src/components/script/dom/xmlhttprequestupload.rs
+++ b/src/components/script/dom/xmlhttprequestupload.rs
@@ -45,4 +45,7 @@ impl XMLHttpRequestUploadDerived for EventTarget {
             _ => false
         }
     }
+}
+
+pub trait XMLHttpRequestUploadMethods {
 }
\ No newline at end of file
diff --git a/src/components/script/html/hubbub_html_parser.rs b/src/components/script/html/hubbub_html_parser.rs
index a90a696063c..0121b023783 100644
--- a/src/components/script/html/hubbub_html_parser.rs
+++ b/src/components/script/html/hubbub_html_parser.rs
@@ -2,6 +2,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+use dom::attr::AttrMethods;
 use dom::bindings::codegen::InheritTypes::{NodeBase, NodeCast, TextCast, ElementCast};
 use dom::bindings::codegen::InheritTypes::HTMLIFrameElementCast;
 use dom::bindings::js::{JS, JSRef, RootCollection, Unrooted, OptionalRootable};
@@ -476,7 +477,7 @@ pub fn parse_html(page: &Page,
                 let script: &JSRef<Element> = &*from_hubbub_node(script, None).root(&roots);
                 match script.get_attribute(Null, "src").root(&roots) {
                     Some(src) => {
-                        debug!("found script: {:s}", src.get().Value());
+                        debug!("found script: {:s}", src.deref().Value());
                         let new_url = parse_url(src.get().value_ref(), Some(url3.clone()));
                         js_chan2.send(JSTaskNewFile(new_url));
                     }
diff --git a/src/components/script/script_task.rs b/src/components/script/script_task.rs
index 36fc83b1aee..df7e6f2b994 100644
--- a/src/components/script/script_task.rs
+++ b/src/components/script/script_task.rs
@@ -5,17 +5,18 @@
 //! The script task is the task that owns the DOM in memory, runs JavaScript, and spawns parsing
 //! and layout tasks.
 
+use dom::attr::AttrMethods;
 use dom::bindings::codegen::RegisterBindings;
 use dom::bindings::codegen::InheritTypes::{EventTargetCast, NodeCast, ElementCast, EventCast};
 use dom::bindings::js::{JS, JSRef, RootCollection, Unrooted, OptionalAssignable};
 use dom::bindings::js::OptionalRootable;
 use dom::bindings::trace::{Traceable, Untraceable};
 use dom::bindings::utils::{Reflectable, GlobalStaticData, wrap_for_same_compartment};
-use dom::document::{Document, HTMLDocument};
+use dom::document::{Document, HTMLDocument, DocumentMethods};
 use dom::element::{Element, AttributeHandlers};
 use dom::event::{Event_, ResizeEvent, ReflowEvent, ClickEvent, MouseDownEvent, MouseMoveEvent, MouseUpEvent};
-use dom::event::Event;
-use dom::uievent::UIEvent;
+use dom::event::{Event, EventMethods};
+use dom::uievent::{UIEvent, UIEventMethods};
 use dom::eventtarget::EventTarget;
 use dom::node;
 use dom::node::{Node, NodeHelpers};
@@ -409,7 +410,7 @@ impl Page {
     fn find_fragment_node(&self, fragid: ~str) -> Option<Unrooted<Element>> {
         let roots = RootCollection::new();
         let document = self.frame().get_ref().document.root(&roots);
-        match document.get().GetElementById(fragid.to_owned()) {
+        match document.deref().GetElementById(fragid.to_owned()) {
             Some(node) => Some(node),
             None => {
                 let doc_node: &JSRef<Node> = NodeCast::from_ref(&*document);
@@ -445,7 +446,7 @@ impl Page {
         let roots = RootCollection::new();
         let frame = self.frame();
         let document = frame.get_ref().document.root(&roots);
-        let root = document.get().GetDocumentElement().root(&roots);
+        let root = document.deref().GetDocumentElement().root(&roots);
         if root.is_none() {
             return None;
         }
@@ -468,7 +469,7 @@ impl Page {
         let roots = RootCollection::new();
         let frame = self.frame();
         let document = frame.get_ref().document.root(&roots);
-        let root = document.get().GetDocumentElement().root(&roots);
+        let root = document.deref().GetDocumentElement().root(&roots);
         if root.is_none() {
             return None;
         }
@@ -985,7 +986,7 @@ impl ScriptTask {
         // "load" event as soon as we've finished executing all scripts parsed during
         // the initial load.
         let mut event = Event::new(&*window).root(&roots);
-        event.get_mut().InitEvent(~"load", false, false);
+        event.InitEvent(~"load", false, false);
         let doctarget: &JSRef<EventTarget> = EventTargetCast::from_ref(&*document);
         let wintarget: &mut JSRef<EventTarget> = EventTargetCast::from_mut_ref(&mut *window);
         let wintarget_alias = wintarget.clone();
@@ -1055,8 +1056,8 @@ impl ScriptTask {
                         // http://dev.w3.org/csswg/cssom-view/#resizing-viewports
                         // https://dvcs.w3.org/hg/dom3events/raw-file/tip/html/DOM3-Events.html#event-type-resize
                         let mut uievent = UIEvent::new(&*window).root(&roots);
-                        uievent.get_mut().InitUIEvent(~"resize", false, false,
-                                                      Some((*window).clone()), 0i32);
+                        uievent.InitUIEvent(~"resize", false, false,
+                                            Some((*window).clone()), 0i32);
                         let event: &mut JSRef<Event> = EventCast::from_mut_ref(&mut *uievent);
 
                         let wintarget: &mut JSRef<EventTarget> = EventTargetCast::from_mut_ref(&mut *window);
@@ -1194,7 +1195,7 @@ impl ScriptTask {
         // if the node's element is "a," load url from href attr
         let attr = element.get_attribute(Null, "href");
         for href in attr.root(&roots).iter() {
-            debug!("ScriptTask: clicked on link to {:s}", href.get().Value());
+            debug!("ScriptTask: clicked on link to {:s}", href.Value());
             let click_frag = href.get().value_ref().starts_with("#");
             let base_url = Some(page.get_url());
             debug!("ScriptTask: current url is {:?}", base_url);