I am trying to redo a side menu (http://dantclayton.com/products_dir.htm) and want to use CSS <ul> but am having problems getting the third tier to position correctly. What is the correct syntax for controlling that third tier<li>.

Right now I am using
<ul>
<li>Title
<ul>
<li>menu item 1 </li>
<li>menu item 2
<ul>
<li>sub item 1</li>
</ul>
</li>
</ul>
</li>
</ul>

Thank in advance