<html>
<head>
<script type="text/javascript">

function select(start, startOffset, end, endOffset) {
  var sel = getSelection();
  sel.removeAllRanges();
  var range = document.createRange();
  range.setStart(start, startOffset);
  range.setEnd(end, endOffset);
  sel.addRange(range);
}

function boom() {
  var p = document.body;
  select(p.childNodes[0],0,p.childNodes[0],1);
  sel = getSelection();
  range = sel.getRangeAt(0);
  range.detach();
  range.insertNode(p);
}

</script>
</head>
<body onload="boom()"><span>Hello Kitty</span></body>
</html>
