<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script type="text/javascript" >
function boom()
{
var a = document.getElementById("a");
document.body.removeChild(a);
document.body.offsetHeight;
document.body.appendChild(a);
}
</script>
</head>
<body style="-moz-column-count: 3;" onload="boom();">1<div style="height: 1em;"></div><div id="a">2<select style="float: right;"></select></div></body>
</html>