Works, but generates errors Rated 4 out of 5 stars

This works in Firefox 3.6.12, but every time I type anything in the awesome bar, the following error is generated in the error console:

"Error: 'JavaScript component does not have a method named: "handleEvent"' when calling method: [nsIDOMEventListener::handleEvent] = NS_ERROR_XPC_JSOBJECT_HAS_NO_FUNCTION_NAMED"

It has something to do with overlaying the browserOverlay.xml file.

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