My site also incorporates a search engine script which uses the autocomplete script SuggestFramework.js (which came with the download, the search engine script is ). Unfortunately the inclusion of this autocomple script stops the folder tree working.
I'm pretty sure it's cause by the autocomplete script requiring the following after the <body> tag: -
<script type="text/javascript">window.onload = initializeSuggestFramework;</script>
Is there any way around this so both scripts can work on the same page?