The markup for the menu was intentionally set to be minimalistic, so you can customize it as you see fit. Lets say you want to customize the look of the main menu items to adopt the look of Uber Round Tabs. That's easily done just by dropping in the CSS and giving the menu the designated ID value:

Code:
<link rel="stylesheet" type="text/css" href="mouseovertabs.css" />
<script src="mouseovertabs.js" type="text/javascript">
/***********************************************
* Mouseover Tabs Menu- (c) 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 this script and 100s more
***********************************************/
</script>
<style type="text/css">
/*Credits: Dynamic Drive CSS Library */
/*URL: http://www.dynamicdrive.com/style/ */
.ubercolortabs{
padding: 0;
width: 100%;
overflow: hidden;
background: transparent;
}
.ubercolortabs ul{
font: bold 11px Arial, Verdana, sans-serif;
margin: 0;
padding: 0;
list-style: none;
}
.ubercolortabs li{
display: inline;
margin: 0 2px 0 0;
padding: 0;
text-transform: uppercase;
}
.ubercolortabs a{
float: left;
color: white;
background: #804000 url(roundleft.gif) no-repeat left top; /*default background color of tabs, left corner image*/
margin: 0 2px 0 0;
padding: 0 0 1px 3px;
text-decoration: none;
letter-spacing: 1px;
}
.ubercolortabs a span{
float: left;
display: block;
background: transparent url(roundright.gif) no-repeat right top; /*right corner image*/
padding: 7px 9px 3px 6px;
cursor: pointer;
}
.ubercolortabs a span{
float: none;
}
.ubercolortabs a:hover, .ubercolortabs li.selected a{
background-color: #AE5300; /*background color of tabs onMouseover*/
color: white;
}
.ubercolortabs a:hover span{
background-color: transparent;
}
.ubercolordivider{ /*CSS for horizontal line.*/
clear: both;
padding: 0;
width: 100%;
height: 5px;
line-height: 5px;
background: #804000; /*background color of horizontal line*/
border-top: 1px solid #fff; /*Remove this to remove border between bar and tabs*/
}
</style>
<body>
<div id="mytabsmenu" class="ubercolortabs">
<ul>
<li><a href="http://www.javascriptkit.com" rel="gotsubmenu[selected]"><span>JavaScript Kit</span></a></li>
<li><a href="http://www.cssdrive.com" rel="gotsubmenu"><span>CSS Drive</span></a></li>
<li><a href="http://www.codingforums.com"><span>No Sub Menu</span></a></li>
</ul>
</div>
<div id="mysubmenuarea" class="tabsmenucontentclass">
<!--1st link within submenu container should point to the external submenu contents file-->
<a href="submenucontents.htm" style="visibility:hidden">Sub Menu contents</a>
</div>
<script type="text/javascript">
//mouseovertabsmenu.init("tabs_container_id", "submenu_container_id", "bool_hidecontentsmouseout")
mouseovertabsmenu.init("mytabsmenu", "mysubmenuarea", true)
</script>
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