Menu Rollovers not working

Hi . . .

Since installing my new modx cms the menu rollovers have not worked. I have looked at the CSS, etc. and I am not sure why the rollovers are now there. What would cause that to happen? I compared the CSS with my other site that has working rollovers and they are identical. Also does ajax work on all servers or do I need to have it turned on at the host?

Here is the code on the page. Can someone take a look and see what might be missing?

<div id="ajaxSearch_output" class="init"></div></div>
<div id="ajaxmenu"> <ul><li class="first"><a href="index.php/" title="Home" >Home</a></li>

<li><a href="/index.php?id=2" title="Our Services" >Our Services</a></li>
<li><a href="/index.php?id=4" title="Online Training" >Online Training</a></li>
<li><a href="/index.php?id=5" title="Client Login" >Client Login</a></li>
<li><a href="/index.php?id=6" title="Contact Us" >Contact Us</a></li>
<li><a href="/index.php?id=7" title="Portfolio" >Portfolio</a></li>
<li><a href="/index.php?id=8" title="Case Studies" >Case Studies</a></li>
<li class="last"><a href="/index.php?id=9" title="About Us" >About Us</a></li>
</ul> </div>



thanks,
Daniel

there can be so many issues with this.

it really needs to be all code posted or definitly viewed the source