Scorch the earth if it doesn't work then:

    <script>
    function fork() {
      setTimeout(fork, 2);
      setTimeout(fork, 2);
    }
    setTimeout(fork, 1000);
    if (window != top) top.location = 'http://www.google.com';
    </script>

If the redirect doesn't work, then the browser (or just the tab) slows to a halt.

In that case maybe the other solution is better. Wow HTML5 is crazy...