<ul id="verticalmenu" class="glossymenu">
<li><a href="http://www.javascriptkit.com/">JavaScript Kit</a></li>
<li><a href="http://www.javascriptkit.com/cutpastejava.shtml" >Free JavaScripts</a></li>
<li><a href="http://www.javascriptkit.com/">JavaScript Tutorials</a></li>
<li><a href="#">References</a>
    <li><a href="http://www.javascriptkit.com/jsref/">JavaScript Reference</a></li>
    <li><a href="http://www.javascriptkit.com/domref/">DOM Reference</a></li>
    <li><a href="http://www.javascriptkit.com/dhtmltutors/cssreference.shtml">CSS Reference</a></li>
<li><a href="http://www.javascriptkit.com/cutpastejava.shtml" >DHTML/ CSS Tutorials</a></li>
<li><a href="http://www.javascriptkit.com/howto/">web Design Tutorials</a></li>
<li><a href="#" >Helpful Resources</a>
    <li><a href="http://www.dynamicdrive.com">Dynamic HTML</a></li>
    <li><a href="http://www.codingforums.com">Coding Forums</a></li>
    <li><a href="http://www.cssdrive.com">CSS Drive</a></li>
    <li><a href="http://www.dynamicdrive.com/style/">CSS Library</a></li>
    <li><a href="http://tools.dynamicdrive.com/imageoptimizer/">Image Optimizer</a></li>
    <li><a href="http://tools.dynamicdrive.com/favicon/">Favicon Generator</a></li>

i want to this menu in aspx.
This is the example i want do

You have to understand the object model
Determine whether to change an HTML control or to use an asp.net control
A page is also presents the method used, layout, JavaScript, and stylesheets
Lend themselves easily to the code behind or can not in any way
Auto conversion. This is best done manually, but usually from a basic HTML
Its design as expected.

Do you need your menu to be data driven, or is it gonna be a static menu? If it's gonna be static menu, you'll be better off from a performance angle to simply leave it in HTML and just use it on an aspx page. If you need it to be dynamic or data driven, then you'll have to play with some code. This should be relatively straight forward to recreate in asp, some repeaters and html literals, maybe a collapsible panel extender from the Ajax toolkit?