diff -r 000000000000 -r 6474c204b198 toolkit/components/help/content/helpContextOverlay.xul
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/components/help/content/helpContextOverlay.xul	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,61 @@
+<?xml version="1.0"?> 
+# This Source Code Form is subject to the terms of the Mozilla Public
+# 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/.
+
+<!DOCTYPE overlay [
+    <!ENTITY % helpDTD SYSTEM "chrome://help/locale/help.dtd">
+    %helpDTD;
+]>
+<overlay id="contentAreaContextOverlay"
+         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+# Help Window's right-click menu
+  <popupset id="contentAreaContextSet">
+    <menupopup id="contentAreaContextMenu"
+               onpopupshowing="goUpdateCommand('cmd_copy')">
+      <menuitem id="context-back"
+                label="&backButton.label;"
+                accesskey="&backButton.accesskey;"
+                observes="canGoBack"
+                oncommand="goBack()"/>
+      <menuitem id="context-forward"
+                label="&forwardButton.label;"
+                accesskey="&forwardButton.accesskey;"
+                observes="canGoForward"
+                oncommand="goForward()"/>
+      <menuseparator/>
+      <menuitem id="context-copy"
+                label="&copyCmd.label;"
+                accesskey="&copyCmd.accesskey;"
+                command="cmd_copy"
+                disabled="true"/>
+      <menuitem id="context-selectall"
+                label="&selectAllCmd.label;"
+                accesskey="&selectAllCmd.accesskey;"
+                command="cmd_selectAll"/>
+      <menuseparator/>
+      <menuitem id="zoom-in"
+      	        label="&fullZoomEnlargeBtn.label;"
+      	        accesskey="&fullZoomEnlargeBtn.accesskey;"
+      	        oncommand="ZoomManager.enlarge();"/>
+      <menuitem id="zoom-out"
+      		label="&fullZoomReduceBtn.label;"
+      		accesskey="&fullZoomReduceBtn.accesskey;"
+      		oncommand="ZoomManager.reduce();"/>
+#ifdef XP_WIN
+#define HELP_ALWAYS_RAISED_TOGGLE
+#endif
+#ifdef HELP_ALWAYS_RAISED_TOGGLE
+      <menuseparator/>
+      <menuitem id="context-zlevel"
+                type="checkbox"
+                checked="true"
+                persist="checked"
+                label="&zLevel.label;"
+                accesskey="&zLevel.accesskey;"
+                oncommand="toggleZLevel(this);"/>
+#endif
+    </menupopup>
+  </popupset>
+</overlay>