The first thing I'd try is getting rid of the defer attribute:
Code:
<script type="text/javascript" src="documents/simpletreemenu.js" defer="defer">
/***********************************************
* Simple Tree Menu- � Dynamic Drive DHTML code library (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code
***********************************************/
</script>
It's a great shortcut in IE - when it works. But when there are other scripts on a page (as I see that you have), it often cause the script that uses defer to stop working.
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