diff --git a/src/components/script/dom/document.rs b/src/components/script/dom/document.rs
index e71db9bf578..eb9eb3d3929 100644
--- a/src/components/script/dom/document.rs
+++ b/src/components/script/dom/document.rs
@@ -38,15 +38,16 @@ use dom::htmlelement::HTMLElement;
 use dom::htmlheadelement::HTMLHeadElement;
 use dom::htmlhtmlelement::HTMLHtmlElement;
 use dom::htmltitleelement::HTMLTitleElement;
+use dom::location::Location;
 use dom::mouseevent::MouseEvent;
 use dom::node::{Node, ElementNodeTypeId, DocumentNodeTypeId, NodeHelpers};
 use dom::node::{CloneChildren, DoNotCloneChildren};
 use dom::nodelist::NodeList;
 use dom::text::Text;
 use dom::processinginstruction::ProcessingInstruction;
+use dom::range::Range;
 use dom::uievent::UIEvent;
 use dom::window::{Window, WindowHelpers};
-use dom::location::Location;
 use html::hubbub_html_parser::build_element_from_tag;
 use hubbub::hubbub::{QuirksMode, NoQuirks, LimitedQuirks, FullQuirks};
 use layout_interface::{DocumentDamageLevel, ContentChangedDocumentDamage};
@@ -504,6 +505,11 @@ impl<'a> DocumentMethods for JSRef<'a, Document> {
         }
     }
 
+    // http://dom.spec.whatwg.org/#dom-document-createrange
+    fn CreateRange(&self) -> Temporary<Range> {
+        Range::new(self)
+    }
+
     // http://www.whatwg.org/specs/web-apps/current-work/#document.title
     fn Title(&self) -> DOMString {
         let mut title = String::new();
diff --git a/src/components/script/dom/range.rs b/src/components/script/dom/range.rs
index 16449cabe1a..3ed02410a1e 100644
--- a/src/components/script/dom/range.rs
+++ b/src/components/script/dom/range.rs
@@ -4,14 +4,16 @@
 
 use dom::bindings::codegen::Bindings::RangeBinding;
 use dom::bindings::codegen::Bindings::RangeBinding::RangeMethods;
+use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
 use dom::bindings::error::Fallible;
-use dom::bindings::global::GlobalRef;
+use dom::bindings::global::{GlobalRef, Window};
 use dom::bindings::js::{JSRef, Temporary};
 use dom::bindings::utils::{Reflectable, Reflector, reflect_dom_object};
+use dom::document::Document;
 
 #[deriving(Encodable)]
 pub struct Range {
-    pub reflector_: Reflector
+    reflector_: Reflector
 }
 
 impl Range {
@@ -21,16 +23,24 @@ impl Range {
         }
     }
 
-    pub fn new(global: &GlobalRef) -> Temporary<Range> {
-        reflect_dom_object(box Range::new_inherited(), global, RangeBinding::Wrap)
+    pub fn new(document: &JSRef<Document>) -> Temporary<Range> {
+        let window = document.window.root();
+        reflect_dom_object(box Range::new_inherited(),
+                           &Window(*window),
+                           RangeBinding::Wrap)
     }
 
     pub fn Constructor(global: &GlobalRef) -> Fallible<Temporary<Range>> {
-        Ok(Range::new(global))
+        let document = global.as_window().Document().root();
+        Ok(Range::new(&*document))
     }
 }
 
 impl<'a> RangeMethods for JSRef<'a, Range> {
+    /// http://dom.spec.whatwg.org/#dom-range-detach
+    fn Detach(&self) {
+        // This method intentionally left blank.
+    }
 }
 
 impl Reflectable for Range {
diff --git a/src/components/script/dom/webidls/Document.webidl b/src/components/script/dom/webidls/Document.webidl
index 79ef4c1fa47..0a58227cdbe 100644
--- a/src/components/script/dom/webidls/Document.webidl
+++ b/src/components/script/dom/webidls/Document.webidl
@@ -43,6 +43,8 @@ interface Document : Node {
 
   [Throws]
   Event createEvent(DOMString interface_);
+
+  Range createRange();
 };
 
 /* http://www.whatwg.org/specs/web-apps/current-work/#the-document-object */
diff --git a/src/components/script/dom/webidls/Range.webidl b/src/components/script/dom/webidls/Range.webidl
index c0e8f630546..d74411b1dd9 100644
--- a/src/components/script/dom/webidls/Range.webidl
+++ b/src/components/script/dom/webidls/Range.webidl
@@ -59,7 +59,7 @@ interface Range {
   // void surroundContents(Node newParent);
 
   // Range cloneRange();
-  // void detach();
+  void detach();
 
   // [Throws]
   // boolean isPointInRange(Node node, unsigned long offset);
diff --git a/src/test/wpt/metadata/dom/interfaces.html.ini b/src/test/wpt/metadata/dom/interfaces.html.ini
index 507b00d92de..a5c7e783ce2 100644
--- a/src/test/wpt/metadata/dom/interfaces.html.ini
+++ b/src/test/wpt/metadata/dom/interfaces.html.ini
@@ -1,3 +1,45 @@
 [interfaces.html]
   type: testharness
-  expected: ERROR
+  expected: TIMEOUT
+  [DOMException exception: existence and properties of exception interface prototype object]
+    expected: FAIL
+
+  [DOMException exception: existence and properties of exception interface prototype object\'s "name" property]
+    expected: FAIL
+
+  [DOMError interface: existence and properties of interface object]
+    expected: FAIL
+
+  [DOMError interface object length]
+    expected: FAIL
+
+  [DOMError interface: existence and properties of interface prototype object]
+    expected: FAIL
+
+  [DOMError interface: existence and properties of interface prototype object\'s "constructor" property]
+    expected: FAIL
+
+  [DOMError interface: attribute name]
+    expected: FAIL
+
+  [DOMError interface: attribute message]
+    expected: FAIL
+
+  [Event interface object length]
+    expected: FAIL
+
+  [Event interface: document.createEvent("Event") must have own property "isTrusted"]
+    expected: FAIL
+
+  [Event interface: new Event("foo") must have own property "isTrusted"]
+    expected: FAIL
+
+  [CustomEvent interface object length]
+    expected: FAIL
+
+  [Event interface: new CustomEvent("foo") must have own property "isTrusted"]
+    expected: FAIL
+
+  [EventTarget interface: existence and properties of interface object]
+    expected: TIMEOUT
+