Hi Boris, I am a total newbie to Firefox-code so I honestly couldnt make out much by stepping through (nsCOMPtr<nsIWebBrowserChrome> browserChrome(do_GetInterface(mTreeOwner))). I wasnt even sure what I was trying to check while stepping through. Could you please elaborate on this?? Also are there any tests (among the various provided) which I could run to narrow down the problem?? Warm Regards, Anup
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