gistfile1.txt

diff --git a/components/compositing/compositor.rs b/components/compositing/compositor.rs
index 18f6618..56db74d 100644
--- a/components/compositing/compositor.rs
+++ b/components/compositing/compositor.rs
@@ -384,6 +384,10 @@ impl<Window: WindowMethods> IOCompositor<Window> {
                 self.scroll_fragment_to_point(pipeline_id, layer_id, point);
             }
 
+            (Msg::Status(message), ShutdownState::NotShuttingDown) => {
+                self.window.status(message);
+            }
+
             (Msg::LoadStart(back, forward), ShutdownState::NotShuttingDown) => {
                 self.window.load_start(back, forward);
             }
diff --git a/components/compositing/compositor_task.rs b/components/compositing/compositor_task.rs
index 9a47fce..f588c49 100644
--- a/components/compositing/compositor_task.rs
+++ b/components/compositing/compositor_task.rs
@@ -180,6 +180,8 @@ pub enum Msg {
     ViewportConstrained(PipelineId, ViewportConstraints),
     /// A reply to the compositor asking if the output image is stable.
     IsReadyToSaveImageReply(bool),
+    /// A status message to be displayed by the browser chrome
+    Status(Option<String>),
 }
 
 impl Debug for Msg {
@@ -206,6 +208,7 @@ impl Debug for Msg {
             Msg::PaintTaskExited(..) => write!(f, "PaintTaskExited"),
             Msg::ViewportConstrained(..) => write!(f, "ViewportConstrained"),
             Msg::IsReadyToSaveImageReply(..) => write!(f, "IsReadyToSaveImageReply"),
+            Msg::Status(..) => write!(f, "Status"),
         }
     }
 }
diff --git a/components/compositing/constellation.rs b/components/compositing/constellation.rs
index cecaacb..8438f9a 100644
--- a/components/compositing/constellation.rs
+++ b/components/compositing/constellation.rs
@@ -459,6 +459,10 @@ impl<LTF: LayoutTaskFactory, STF: ScriptTaskFactory> Constellation<LTF, STF> {
                 debug!("constellation got remove iframe message");
                 self.handle_remove_iframe_msg(containing_pipeline_id, subpage_id);
             }
+            ConstellationMsg::NodeStatus(message) => {
+                debug!("constellation got NodeStatus message");
+                self.compositor_proxy.send(CompositorMsg::Status(message));
+            }
         }
         true
     }
diff --git a/components/compositing/headless.rs b/components/compositing/headless.rs
index c58532e..ae0304d 100644
--- a/components/compositing/headless.rs
+++ b/components/compositing/headless.rs
@@ -97,6 +97,7 @@ impl CompositorEventListener for NullCompositor {
             Msg::AssignPaintedBuffers(..) |
             Msg::ChangeRunningAnimationsState(..) |
             Msg::ScrollFragmentPoint(..) |
+            Msg::Status(..) |
             Msg::LoadStart(..) |
             Msg::LoadComplete(..) |
             Msg::ScrollTimeout(..) |
diff --git a/components/compositing/windowing.rs b/components/compositing/windowing.rs
index 51a97ec..c391a3b 100644
--- a/components/compositing/windowing.rs
+++ b/components/compositing/windowing.rs
@@ -103,6 +103,8 @@ pub trait WindowMethods {
     fn set_page_title(&self, title: Option<String>);
     /// Sets the load data for the current page.
     fn set_page_url(&self, url: Url);
+    /// Called when the browser chrome should display a status message.
+    fn status(&self, Option<String>);
     /// Called when the browser has started loading a frame.
     fn load_start(&self, back: bool, forward: bool);
     /// Called when the browser is done loading a frame.
diff --git a/components/msg/constellation_msg.rs b/components/msg/constellation_msg.rs
index 8706a80..6fb89e5 100644
--- a/components/msg/constellation_msg.rs
+++ b/components/msg/constellation_msg.rs
@@ -244,6 +244,8 @@ pub enum Msg {
     IsReadyToSaveImage(HashMap<PipelineId, Epoch>),
     /// Notification that this iframe should be removed.
     RemoveIFrame(PipelineId, SubpageId),
+    /// Status message to be displayed in the chrome, eg. a link URL on mouseover
+    NodeStatus(Option<String>),
 }
 
 #[derive(Clone, Eq, PartialEq)]
diff --git a/components/script/dom/document.rs b/components/script/dom/document.rs
index 13f035f..626932c 100644
--- a/components/script/dom/document.rs
+++ b/components/script/dom/document.rs
@@ -85,7 +85,7 @@ use geom::point::Point2D;
 use html5ever::tree_builder::{QuirksMode, NoQuirks, LimitedQuirks, Quirks};
 use layout_interface::{LayoutChan, Msg};
 use string_cache::{Atom, QualName};
-use url::Url;
+use url::{Url, UrlParser};
 use js::jsapi::{JSContext, JSObject, JSRuntime};
 
 use num::ToPrimitive;
@@ -647,9 +647,17 @@ impl<'a> DocumentHelpers<'a> for JSRef<'a, Document> {
 
         // Remove hover from any elements in the previous list that are no longer
         // under the mouse.
+        let mut did_status = false;
         for target in prev_mouse_over_targets.iter() {
             if !mouse_over_targets.contains(target) {
                 target.root().r().set_hover_state(false);
+                if did_status == false && target.root().r().is_anchor_element() {
+                    let window = self.window.root();
+                    let ConstellationChan(ref chan) = window.r().constellation_chan();
+                    let event = ConstellationMsg::NodeStatus(None);
+                    chan.send(event).unwrap();
+                    did_status = true;
+                }
             }
         }
 
@@ -686,6 +694,37 @@ impl<'a> DocumentHelpers<'a> for JSRef<'a, Document> {
 
             let event: JSRef<Event> = EventCast::from_ref(mouse_event.r());
             let target: JSRef<EventTarget> = EventTargetCast::from_ref(top_most_node.r());
+            for addr in mouse_over_addresses.iter() {
+                let node = node::from_untrusted_node_address(js_runtime, *addr);
+                let anchor = node.root();
+                if anchor.r().is_anchor_element() {
+                    let window = self.window.root();
+                    let element = ElementCast::from_ref(HTMLAnchorElementCast::to_ref(anchor.r()).unwrap());
+                    let mut ismap_suffix = None;
+                    if target.is_htmlimageelement() && element.has_attribute(&atom!("ismap")) {
+
+                        let rect = window.r().content_box_query(top_most_node.r().to_trusted_node_address());
+                        ismap_suffix = Some(
+                            format!("?{},{}", x as f32 - rect.origin.x.to_f32_px(),
+                                              y as f32 - rect.origin.y.to_f32_px())
+                        )
+                    }
+
+                    let attr = element.get_attribute(&ns!(""), &atom!("href")).root();
+                    let status = match attr {
+                        Some(href) => {
+                            let value = href.r().Value() + ismap_suffix.as_ref().map(|s| &**s).unwrap_or("");
+                            let base_url = window.r().get_url();
+                            let url = UrlParser::new().base_url(&base_url).parse(&value);
+                        },
+                        None => ""
+                    };
+                    let ConstellationChan(ref chan) = window.r().constellation_chan();
+                    let event = ConstellationMsg::NodeStatus(status);
+                    chan.send(event).unwrap();
+                    break;
+                }
+            }
             event.fire(target);
         }
 
diff --git a/ports/cef/window.rs b/ports/cef/window.rs
index 8f08d28..259d79c 100644
--- a/ports/cef/window.rs
+++ b/ports/cef/window.rs
@@ -315,6 +315,9 @@ impl WindowMethods for Window {
         }
     }
 
+    fn status(&self, _: Option<String>) {
+    }
+
     fn load_start(&self, back: bool, forward: bool) {
         // FIXME(pcwalton): The status code 200 is a lie.
         let browser = self.cef_browser.borrow();
diff --git a/ports/glutin/window.rs b/ports/glutin/window.rs
index 16d8c50..347b61e 100644
--- a/ports/glutin/window.rs
+++ b/ports/glutin/window.rs
@@ -505,6 +505,9 @@ impl WindowMethods for Window {
     fn set_page_url(&self, _: Url) {
     }
 
+    fn status(&self, _: Option<String>) {
+    }
+
     fn load_start(&self, _: bool, _: bool) {
     }
 
diff --git a/ports/gonk/src/window.rs b/ports/gonk/src/window.rs
index f751d23..1b9795d 100644
--- a/ports/gonk/src/window.rs
+++ b/ports/gonk/src/window.rs
@@ -802,6 +802,9 @@ impl WindowMethods for Window {
     fn set_page_url(&self, _: Url) {
     }
 
+    fn status(&self, _: Option<String>) {
+    }
+
     fn load_start(&self, _: bool, _: bool) {
     }