<!DOCTYPE html>
<script>
if (window.testRunner)
testRunner.dumpAsText();
onload = function() {
document.body.offsetTop;
document.getElementById('elm').innerHTML= "x";
document.body.offsetTop;
document.getElementById('elm').innerHTML= "PASS";
}
</script>
<p>No assertions should fail.</p>
<div style="-webkit-columns:2; columns:2;">
<span id="elm">FAIL</span>
</div>