diff --git a/src/rust-css b/src/rust-css
index 79a3ddccd05..75aba2d0e4b 160000
--- a/src/rust-css
+++ b/src/rust-css
@@ -1 +1 @@
-Subproject commit 79a3ddccd05742980c5e27e48755bec807d4bd46
+Subproject commit 75aba2d0e4b1224ce55ba11423c78bc7eceaed6c
diff --git a/src/rust-netsurfcss b/src/rust-netsurfcss
index 8b76c31e0d7..62225a3af2c 160000
--- a/src/rust-netsurfcss
+++ b/src/rust-netsurfcss
@@ -1 +1 @@
-Subproject commit 8b76c31e0d72b50630f56e5fb560eda4186c6796
+Subproject commit 62225a3af2c4d59da0d595287570cdfd71e7a4f6
diff --git a/src/servo/css/compute.rs b/src/servo/css/compute.rs
index a3262c8497b..e53fba62586 100644
--- a/src/servo/css/compute.rs
+++ b/src/servo/css/compute.rs
@@ -4,15 +4,15 @@ Calculate styles for Nodes based on SelectResults, resolving inherited values
 
 use dom::node::Node;
 use newcss::color::{Color, rgba};
-use newcss::values::{CSSValue, Specified, Inherit, Length, Px};
+use newcss::values::{CSSValue, Specified, Inherit, Length, Px, CSSBorderWidth, BdrWidthLength};
 use newcss::ComputedStyle;
 
 pub trait ComputeStyles {
     fn compute_background_color(&self) -> Color;
-    fn compute_border_top_width(&self) -> Length;
-    fn compute_border_right_width(&self) -> Length;
-    fn compute_border_bottom_width(&self) -> Length;
-    fn compute_border_left_width(&self) -> Length;
+    fn compute_border_top_width(&self) -> CSSBorderWidth;
+    fn compute_border_right_width(&self) -> CSSBorderWidth;
+    fn compute_border_bottom_width(&self) -> CSSBorderWidth;
+    fn compute_border_left_width(&self) -> CSSBorderWidth;
 }
 
 impl Node: ComputeStyles {
@@ -20,20 +20,20 @@ impl Node: ComputeStyles {
         compute(self, rgba(0, 0, 0, 0.0), |cs| cs.background_color() )
     }
 
-    fn compute_border_top_width(&self) -> Length {
-        compute(self, Px(0.0), |cs| cs.border_top_width() )
+    fn compute_border_top_width(&self) -> CSSBorderWidth {
+        compute(self, BdrWidthLength(Px(0.0)), |cs| cs.border_top_width() )
     }
 
-    fn compute_border_right_width(&self) -> Length {
-        compute(self, Px(0.0), |cs| cs.border_right_width() )
+    fn compute_border_right_width(&self) -> CSSBorderWidth {
+        compute(self, BdrWidthLength(Px(0.0)), |cs| cs.border_right_width() )
     }
 
-    fn compute_border_bottom_width(&self) -> Length {
-        compute(self, Px(0.0), |cs| cs.border_bottom_width() )
+    fn compute_border_bottom_width(&self) -> CSSBorderWidth {
+        compute(self, BdrWidthLength(Px(0.0)), |cs| cs.border_bottom_width() )
     }
 
-    fn compute_border_left_width(&self) -> Length {
-        compute(self, Px(0.0), |cs| cs.border_left_width() )
+    fn compute_border_left_width(&self) -> CSSBorderWidth {
+        compute(self, BdrWidthLength(Px(0.0)), |cs| cs.border_left_width() )
     }
 }
 
diff --git a/src/servo/css/select_handler.rs b/src/servo/css/select_handler.rs
index 0b48e08a5df..d0f58b37c16 100644
--- a/src/servo/css/select_handler.rs
+++ b/src/servo/css/select_handler.rs
@@ -1,5 +1,6 @@
-use dom::node::{Node, Doctype, Comment, Element, Text};
+use dom::node::{Node, NodeData, NodeTree, Doctype, Comment, Element, Text};
 use newcss::SelectHandler;
+use util::tree;
 
 pub struct NodeSelectHandler {
     node: Node
@@ -10,15 +11,39 @@ fn unnamed_node(name: &str) -> ~str {
     fmt!("unnamed-%s", name)
 }
 
+fn node_name(data: &NodeData) -> ~str {
+    match *data.kind {
+        Doctype(*) => unnamed_node("doctype"),
+        Comment(*) => unnamed_node("comment"),
+        Element(ref data) => copy data.tag_name,
+        Text(*) => unnamed_node("text")
+    }
+}
+
 impl NodeSelectHandler: SelectHandler<Node> {
     fn node_name(node: &Node) -> ~str {
         do node.read |data| {
-            match *data.kind {
-                Doctype(*) => unnamed_node("doctype"),
-                Comment(*) => unnamed_node("comment"),
-                Element(ref data) => copy data.tag_name,
-                Text(*) => unnamed_node("text")
-            }
+            node_name(data)
         }
     }
+
+    fn named_parent_node(node: &Node, name: &str) -> Option<Node> {
+        let parent = tree::parent(&NodeTree, node);
+        match parent {
+            Some(parent) => {
+                do parent.read |data| {
+                    if name == node_name(data) {
+                        Some(parent)
+                    } else {
+                        None
+                    }
+                }
+            }
+            None => None
+        }
+    }
+
+    fn parent_node(node: &Node) -> Option<Node> {
+        tree::parent(&NodeTree, node)
+    }
 }
\ No newline at end of file
diff --git a/src/servo/layout/box.rs b/src/servo/layout/box.rs
index 4a5ee7c4fa0..2fba8ef8b3c 100644
--- a/src/servo/layout/box.rs
+++ b/src/servo/layout/box.rs
@@ -11,6 +11,7 @@ use core::rand;
 use css::compute::ComputeStyles;
 use newcss::values::{BoxSizing, Length, Px, CSSDisplay, Specified, BgColor, BgColorTransparent};
 use newcss::values::{BdrColor, PosAbsolute};
+use newcss::values::{BdrWidthLength, BdrWidthMedium};
 use newcss::color::{Color, rgba};
 use dom::element::{ElementKind, HTMLDivElement, HTMLImageElement};
 use dom::node::{Element, Node, NodeData, NodeKind, NodeTree};
@@ -441,7 +442,10 @@ impl RenderBox : RenderBoxMethods {
         let left_width = self.d().node.compute_border_left_width();
 
         match (top_width, right_width, bottom_width, left_width) {
-            (Px(top), Px(right), Px(bottom), Px(left)) => {
+            (BdrWidthLength(Px(top)),
+             BdrWidthLength(Px(right)),
+             BdrWidthLength(Px(bottom)),
+             BdrWidthLength(Px(left))) => {
                 let top_au = au::from_frac_px(top);
                 let right_au = au::from_frac_px(right);
                 let bottom_au = au::from_frac_px(bottom);
@@ -462,12 +466,19 @@ impl RenderBox : RenderBoxMethods {
                         }
                     };
                     let color = rgb(0, 128, 255).to_gfx_color(); // FIXME
-                    //list.append_item(~DisplayItem::new_Border(&bounds, border_width, color));
+                    list.append_item(~DisplayItem::new_Border(&bounds, border_width, color));
                     
                 } else {
                     fail ~"unimplemented border widths";
                 }
             }
+            (BdrWidthMedium,
+             BdrWidthMedium,
+             BdrWidthMedium,
+             BdrWidthMedium) => {
+                // FIXME: This seems to be the default for non-root nodes. For now we'll ignore it
+                warn!("ignoring medium border widths");
+            }
             _ => fail ~"unimplemented border widths"
         }