CSS Drop Down Menu

A quick job for a CSS/Javascript expert who knows what s/he's doing: I need a drop down menu set up on this site: [login to view URL] I have attempted a CSS drop down menu (based on the Suckerfish dropdown method: [login to view URL]) but I have not succeeded. If you view the page in Firefox you will see what I mean. It doesn't work at all in MSIE. This is a modx site - the navbar is dynamically generated as an unsorted list. There are three levels (e.g. [login to view URL]) I want the solution to be CSS-based. Javascript can be used, as in the Suckerfish example, to make it work in MSIE. I need a 24-hour turn around from the time I award the job.