<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
function boom()
{
document.getElementById("select").appendChild(document.createElement("span"));
document.documentElement.offsetHeight;
document.getElementById("z").appendChild(document.createElement("span"));
}
</script>
</head>
<body onload="boom();" style="-moz-column-count: 2; height: 0;"><fieldset><span id="z"><div><div></div></div><select id="select"></select></span></fieldset></body>
</html>