<!-- Testcase originally by <moz_bug_r_a4@yahoo.com> -->

<!DOCTYPE html>
<title>Test for bug 461743</title>

<body>
<iframe src="data:text/html;charset=utf-8,empty"></iframe>
<iframe></iframe>

<script type="application/javascript">
  var chromeUrl = "chrome://global/content/mozilla.html";
  var exploitUrl = "javascript:try { document.body.innerHTML = Components.utils.reportError; } catch (ex) { }";

  var loadCount = 0;
  frames[0].addEventListener("DOMContentLoaded", handleLoad);
  frames[1].addEventListener("DOMContentLoaded", handleLoad);
  function handleLoad() {
    if (++loadCount < 2)
      return;
    frames[0].removeEventListener("DOMContentLoaded", handleLoad);
    frames[1].removeEventListener("DOMContentLoaded", handleLoad);

    var flip = 0;
    MutationEvent.prototype.toString = function() {
      return flip++ == 0 ? chromeUrl : exploitUrl;
    };

    var href = Object.getOwnPropertyDescriptor(Object.getPrototypeOf(frames[1].location), "href").get;
    var loadChrome = { handleEvent: href };
    var loadExploit = { handleEvent: href };

    function delay() {
      var xhr = new XMLHttpRequest();
      xhr.open("GET", location.href, false);
      xhr.send(null);
    }
    function done() {
      var event = new MessageEvent("461743", { bubbles: true, cancelable: false,
                                               data: "done", origin: location.href,
                                               source: window });
      document.dispatchEvent(event);
      frames[0].document.removeEventListener("DOMNodeInserted", loadChrome, true);
      frames[0].document.removeEventListener("DOMNodeInserted", delay, true);
      frames[0].document.removeEventListener("DOMNodeInserted", loadExploit, true);
      frames[0].document.removeEventListener("DOMNodeInserted", done, true);
    }

    frames[0].document.addEventListener("DOMNodeInserted", loadChrome, true);
    frames[0].document.addEventListener("DOMNodeInserted", delay, true);
    frames[0].document.addEventListener("DOMNodeInserted", loadExploit, true);
    frames[0].document.addEventListener("DOMNodeInserted", done, true);

    frames[0].document.designMode = "on";
  }
</script>
</body>
