<!DOCTYPE HTML> <html> <head> <meta charset="utf-8"> <title>Test for Bug 341604</title> <script type="text/javascript" src="/tests/SimpleTest/EventUtils.js"></script> </head> <script type="application/javascript"> function doTest() { document.getElementById('anchor').href = "file_iframe_sandbox_top_navigation_fail.html" + location.search; window.top.opener.postMessage({type: "attempted"}, "*"); sendMouseEvent({type:'click'}, 'anchor'); } </script> <body onload="doTest()"> I am sandboxed with 'allow-scripts' <a target='_top' id='anchor'> </body> </html>