insertparentandchild.html

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<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>