<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin/global.css"?>
<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" onload="boom();">
<script type="text/javascript">

function boom()
{
  var XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";

  var wizard = document.createElementNS(XUL_NS, "wizard");
  var space = document.createTextNode(" ");
  var hbox = document.createElementNS(XUL_NS, "hbox");
  hbox.setAttribute("anonid", "Buttons");

  document.documentElement.appendChild(wizard);
  wizard.appendChild(space);
  wizard.appendChild(hbox);
  wizard.cloneNode(true);
}

</script>
</window>