<!DOCTYPE html>
<html>
<head>
<script>
function boom()
{
var f = document.getElementById("f");
var w = f.contentWindow;
var d = w.document;
d.designMode = 'on';
var r = d.documentElement;
d.removeChild(r);
document.adoptNode(r);
f.remove();
}
</script>
</head>
<body onload="boom();">
<iframe src="data:text/html,1" id="f"></iframe>
</body>
</html>
