<body>
<script>
if (window.testRunner)
    testRunner.dumpAsText();

alert(1);
var doc = document.implementation.createDocument('http://www.w3.org/1999/xhtml', 'html', null); 
alert(2);
var ifr = doc.createElement('iframe');
alert(3);
ifr.setAttribute('src', 'javascript:alert(7)');
alert(4);
var adopted = document.adoptNode(ifr)
alert(5);
document.body.appendChild(adopted);
alert(6);
</script>