509536-1.html
<!DOCTYPE HTML>
<html>
<head>
<script type="text/javascript">
function boom()
{
var frame = document.createElement("iframe");
frame.setAttribute("src", "1");
document.body.appendChild(frame);
frame.setAttribute("src", "2");
}
</script>
</head>
<body onload="boom();"></body>
</html>
