This is really puzzling behavior. The drop down works fine in Firefox and IE7. It even works on the first page of the site in IE6.
See http://www.metayage.com. The drop down for services and team works perfectly.
However in any of the subpage of services it stops working.
For example http://metayage.com/our-services/ip-audit/
The code is exactly the same in both place. I can't seem to figure out why this is happening.