<html>
<head>
<script>
if (window.testRunner)
{
testRunner.dumpAsText();
testRunner.waitUntilDone();
}
function runTest()
{
var button = document.getElementById("test");
button.insertBefore(document.createElement("tbody"), null);
document.body.offsetTop;
document.body.removeChild(button);
var result = document.createElement("div");
result.innerHTML = "PASS";
document.body.appendChild(result);
if (window.testRunner)
testRunner.notifyDone();
}
</script>
</head>
<body onload="runTest()">
<button id="test"/>
</body>
</html>