<html class="reftest-wait">
<head>

<script>
function boom()
{
  document.body.offsetHeight;

  var parent = document.getElementById("body");

  var newdiv = document.createElement("div");
  newdiv.appendChild(document.createTextNode("5"));
  parent.appendChild(newdiv);

  document.body.offsetHeight;
  document.documentElement.className = "";
}
</script>

</head>
<body id="body" onload="boom();">
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
</body>
</html>