I have the following navigation where .topNav has position:relative and subnav has position:absolute. I cant get the sublist to appear over the main list due to z-index problems. This seems to be a known problem.

<ul>
<li class="topNav">About Us
<ul class="subNav"><li> Subsection A</li><li>Subsection B</li></ul>
</li>
</ul>

Does anyone know of a workaround?

UPDATE http://brh.numbera.com/experiments/ie7_tests/zindex.html shows exacly the problem I have. My original posting was in the context of a list but I have reduced the problem to the fact that z-index dosn't seem to work when have an element with position:absolute inside a parent element with position:relative