Hi I would like to know what is the correct way of building my xhtml+css menu, whether to just use simple a href or to include the definition list tags, I saw this example somewhere but dont understand the extra benefit of using definition tags.

Code:
<dl>
<dt id="Home"><a href="">Home</a></dt>
   <dt id="About Us"><a href="">About Us</a></dt>
   <dt id="Services"><a href="">Services</a></dt>
</dl>