<!DOCTYPE html>
<html style="position: relative; -moz-column-count: 3;" class="reftest-wait">
<head>
<script>
function boom()
{
document.documentElement.offsetHeight;
document.body.style.position = "";
document.documentElement.offsetHeight;
document.documentElement.removeAttribute("class");
}
</script>
</head>
<body onload="boom();" style="position: absolute;">A<span><div></div>B</span></body>
</html>