From Bugzilla Helper: User-Agent: Mozilla/4.0 (compatible; MSIE 5.01; Windows 95) BuildID: 2000101408 The page http://www.simifilm.com redirects the browser to http://www.simifilm.ch and generates a frame containing an ad. The javascript "if (window != top) top.location.href = location.href;" should eliminate this frame. This works under IE5/IE5.5/Opera and iCab, but using Mozilla the frame remains. A detail which makes me believe that this bug maybe is'nt related to javascript: Mozilla still displays the URL www.simifilm.org when it should be www.simifilm.ch Reproducible: Always Steps to Reproduce: 1.Load http://www.simifilm.org 2.Do the same in another browser and compare the results. 3. Actual Results: The ad is still visible. Expected Results: There should be no frame.

I am seeing Security errors in the JavaScript console on the redirect. Reassigning to Security:General for further triage. The errors are: Error: Source File: http://www.simifilm.ch/ Line: 33 Error: uncaught exception: [Exception... "Access to property denied" code: 1010 nsresult: NS_ERROR_DOM_PROP_ACCESS_DENIED location: http://www.simifilm.ch/ line: 33

I think this is a known bug. Checking it out...

*** Bug 56132 has been marked as a duplicate of this bug. ***

Mass changing QA to ckritzer.

there's a bug here about writing to location.href, but aside from that, you should never be able to *read* location.href cross-domain. To "break out" of a frame, use if(window == window.top) rather than if (window.location.href = window.top.location.href) which is often a security violation. *** This bug has been marked as a duplicate of 56053 ***

Marking VERIFIED FIXED per Mitch's comments & 56053