Backing out these changes, they were subsumed by bug 387084 and weren't really right anyway. bug 387053

extensions/inspector/resources/content/tasksOverlay-ff.xul

@@ -27,8 +27,7 @@
 
   <commandset id="mainCommandSet">
     <command id="Tasks:Inspector" oncommand="inspectDOMDocument();"/>
-    <command id="Tasks:InspectPage"
-             oncommand="inspectDOMDocument(content.document.wrappedJSObject);"/>
+    <command id="Tasks:InspectPage" oncommand="inspectDOMDocument(content.document);"/>
   </commandset>
 
   <keyset id="mainKeyset">

extensions/inspector/resources/content/tasksOverlay-sb.xul

@@ -28,8 +28,7 @@
 
   <commandset id="calendar_commands">
     <command id="Tasks:Inspector" oncommand="inspectDOMDocument();"/>
-    <command id="Tasks:InspectPage"
-             oncommand="inspectDOMDocument(window.document.wrappedJSObject);"/>
+    <command id="Tasks:InspectPage" oncommand="inspectDOMDocument(window.document);"/>
   </commandset>
 
   <keyset id="tasksKeys">

extensions/inspector/resources/content/tasksOverlay-tb.xul

@@ -29,8 +29,7 @@
 
   <commandset id="tasksCommands">
     <command id="Tasks:Inspector" oncommand="inspectDOMDocument();"/>
-    <command id="Tasks:InspectPage"
-             oncommand="inspectDOMDocument(_content.document.wrappedJSObject);"/>
+    <command id="Tasks:InspectPage" oncommand="inspectDOMDocument(_content.document);"/>
   </commandset>
 
   <keyset id="tasksKeys">