align button to right

[Trasion]

<div id="mytabsmenu" class="tabsmenuclass">
<ul>
<li><a href="putlink" rel="gotsubmenu[selected]">Trasion Homepage</a></li>
<li><a href="putlink" rel="gotsubmenu">Trasion Community</a></li>
<li><a href="putlink" rel="gotsubmenu" style="float:right;">Skateboarding News</a></li>
<li><a href="putlink" rel="gotsubmenu">Skateboarding Galleries</a></li>
<li><a href="putlink" rel="gotsubmenu">Skateboarding Articles</a></li>
<li><a href="putlink" rel="gotsubmenu">Contact Us</a></li>
</ul>
</div>

I'm using a script from DynamicDrive (http://dynamicdrive.com/dynamicindex1/mouseovertabs.htm), and want the "Contact Us" box to be aligned completely to the right of the bottom submenu box. I've tried a float:right;, but it won't work. Any suggestions?

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nvm