User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.4; en-US; rv:1.9) Gecko/2008061004 Firefox/3.0 Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.4; en-US; rv:1.9) Gecko/2008061004 Firefox/3.0 Error: uncaught exception: [Exception... "Access to property denied" code: "1010" nsresult: "0x805303f2 (NS_ERROR_DOM_PROP_ACCESS_DENIED)" location: "http://localhost/stap/test_iframe.html Line: 2"] Reproducible: Always Steps to Reproduce: Create three files on a local webserver: #test_wrapper.html <iframe src="http://127.0.0.1/test_parent.html" /></iframe> #test_parent.html <iframe src="http://localhost/test_iframe.html" /></iframe> #test_iframe.html <script type="text/javascript" charset="utf-8"> window.parent.location.href = "test_parent.html#message"; </script> You can access fine at http://localhost/test_wrapper.html but you get a javascript error when you try http://127.0.0.1/test_wrapper.html. This worked fine in Firefox 2. Actual Results: Error message Expected Results: test_parent's url should have been updated

Could you attach a testcase to this bug with the "Add an attachment" link?

Duplicate of Bug 314787 ?

Sorry, I meant: duplicate of Bug 418559 ?

This was an intentional change for security reasons, and is unlikely to be reverted. See http://crypto.stanford.edu/websec/frames/navigation/ and bug 408052. You might be allowed to change location.hash instead.

This would be a duplicate of bug 418559 if bug 418559 hadn't become a tech evang bug for a specific site ;)