<!DOCTYPE html>
<html>
<head>
<script>
function boom()
{
var frame = document.getElementById("f");
var frameDoc = frame.contentDocument;
frameDoc.getElementById("g").style.background = "yellow";
frame.style.cssFloat = "right";
document.documentElement.offsetHeight;
frameDoc.documentElement.style.color = "green";
}
</script>
</head>
<body onload="boom();"><iframe id="f" src="data:text/html,<!DOCTYPE html><frameset><frame id=g></frameset>"></iframe></body>
</html>