diff --git a/browser/metro/base/content/browser-ui.js b/browser/metro/base/content/browser-ui.js
index 282651bf928c..8a61e6e47904 100644
--- a/browser/metro/base/content/browser-ui.js
+++ b/browser/metro/base/content/browser-ui.js
@@ -106,6 +106,8 @@ var BrowserUI = {
     window.addEventListener("MozPrecisePointer", this, true);
     window.addEventListener("MozImprecisePointer", this, true);
 
+    window.addEventListener("AppCommand", this, true);
+
     Services.prefs.addObserver("browser.cache.disk_cache_ssl", this, false);
 
     // Init core UI modules
@@ -781,6 +783,9 @@ var BrowserUI = {
       case "MozImprecisePointer":
         this._onImpreciseInput();
         break;
+      case "AppCommand":
+        this.handleAppCommandEvent(aEvent);
+        break;
     }
   },
 
@@ -1140,6 +1145,48 @@ var BrowserUI = {
     }
   },
 
+  handleAppCommandEvent: function (aEvent) {
+    switch (aEvent.command) {
+    case "Back":
+      this.doCommand("cmd_back");
+      break;
+    case "Forward":
+      this.doCommand("cmd_forward");
+      break;
+    case "Reload":
+      this.doCommand("cmd_reload");
+      break;
+    case "Stop":
+      this.doCommand("cmd_stop");
+      break;
+    case "Home":
+      this.doCommand("cmd_home");
+      break;
+    case "New":
+      this.doCommand("cmd_newTab");
+      break;
+    case "Close":
+      this.doCommand("cmd_closeTab");
+      break;
+    case "Find":
+      FindHelperUI.show();
+      break;
+    case "Open":
+      this.doCommand("cmd_openFile");
+      break;
+    case "Save":
+      this.doCommand("cmd_savePage");
+      break;
+    case "Search":
+      this.doCommand("cmd_openLocation");
+      break;
+    default:
+      return;
+    }
+    aEvent.stopPropagation();
+    aEvent.preventDefault();
+  },
+
   confirmSanitizeDialog: function () {
     let bundle = Services.strings.createBundle("chrome://browser/locale/browser.properties");
     let title = bundle.GetStringFromName("clearPrivateData.title2");