<!DOCTYPE html>
<html>
<head>
<title>Null frame access tests</title>
<script>
window.onload = function() {
    if (window.testRunner) {
        testRunner.dumpAsText();
        testRunner.waitUntilDone();
    }

    var tag = document.getElementById('subframe');
    var win = tag.contentWindow;
    // remove the element so the window has a null frame
    tag.parentNode.removeChild(tag);

    // schedule to run after the frame is null
    setTimeout(function() {
        document.body.appendChild(document.createTextNode(win.test || 'property: FAIL ... '));
        document.body.appendChild(document.createTextNode(win[20] === undefined ? 'array: PASS ... ' : 'array: FAIL ... '));
        document.body.appendChild(document.createTextNode(win.Comment ? 'constructor: PASS .... ' : 'constructor: FAIL ... '));
        document.body.appendChild(document.createTextNode(win.postMessage ? 'operation: PASS.' : 'operation: FAIL.'));
        if (window.testRunner)
            testRunner.notifyDone();
    }, 0);
};
</script>
</head>
<body>
This tests access to a window with a null frame. You should see "PASS" for each of the three tests below.<br /><br />
<iframe id="subframe" srcdoc="&lt;script&gt;window.test='property: PASS ... ';window[20]='array: PASS ... ';&lt;/script&gt;" />
</body>
</html>