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

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

  var sixdiv = document.getElementById("six");
  var parent = sixdiv.parentNode;

  var newdiv = document.createElement("div");
  var childdiv = document.createElement("div");
  childdiv.appendChild(document.createTextNode("5c"));
  newdiv.appendChild(childdiv);
  childdiv = document.createElement("div");
  childdiv.appendChild(document.createTextNode("5d"));
  newdiv.appendChild(childdiv);
  parent.insertBefore(newdiv, sixdiv);

  childdiv = document.createElement("div");
  childdiv.appendChild(document.createTextNode("5b"));
  newdiv.insertBefore(childdiv, newdiv.firstChild);
  childdiv = document.createElement("div");
  childdiv.appendChild(document.createTextNode("5a"));
  newdiv.insertBefore(childdiv, newdiv.firstChild);

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

</head>
<body onload="boom();">
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div id="six">6</div>
<div>7</div>
<div>8</div>
<div>9</div>
</body>
</html>