<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
function boom()
{
var svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
var fo = document.createElementNS("http://www.w3.org/2000/svg", "foreignObject");
fo.style.padding = "10em";
svg.appendChild(fo);
document.body.appendChild(svg);
document.body.offsetHeight;
var opt = document.createElementNS("http://www.w3.org/1999/xhtml", "span");
fo.appendChild(opt);
}
</script>
</head>
<body onload="boom();"></body>
</html>