in the head of the page, find the code that attaches the menu support js and css file's. it will look simoilar to:
<script type="text/javascript" src="CSSMenuWriter/cssmw0/menu.js"></script>
<style type="text/css" media="all">
<!--
@import url("plugins/CSSMenuWriter/cssmw0/menu.css");
-->
</style>
<!--[if lte IE 6]>
<style type="text/css" media="all">
@import url("plugins/CSSMenuWriter/cssmw0/menu_ie.css");
</style>
<![endif]-->
in the body of the page, look for the menu code:
<ul class="level-0" id="cssmw0">
<li class="parent"><a href="#">Item 1</a>
<ul class="level-1">
<li><a href="#">Sub Item 1</a></li>
<li><a href="#">Sub Item 2</a></li>
<li><a href="#">Sub Item 3</a></li>
</ul>
</li>
<li><a href="#">Item 2</a></li>
<li><a href="#">Item 3</a></li>
</ul>
<script type="text/javascript">if(window.attachEvent) { window.attachEvent("onload", function() { cssmw0.intializeMenu('cssmw0',{select_current: 0, orientation: 1}); }); } else if(window.addEventListener) { window.addEventListener("load", function() { cssmw0.intializeMenu('cssmw0',{select_current: 0, orientation: 1}); }, true); }</script>