to <head> :
Code:
<script src="/js/prototype.js" type="text/javascript"></script>
<script src="/js/scriptaculous.js"type="text/javascript"></script>
JS-Libs U can find online.
Body:
Code:
<div onclick="javascript: Element.show('usertoolswrap'); window.setTimeout('Effect.DropOut(\'usertoolswrap\', {duration:.3})',4000); return false;" id="usertools_out" class="sitetool">
<span class="sitetools">You button</span>
<!-- hidden area -->
<div id="usertoolswrap" style="display: none;">
<div id="usertools" onclick="javascript: Element.hide('usertoolswrap'); return false;" >
...Your html-code here...
</div>
</div>
<!-- END hidden area -->
</div>