I had been using a slightly older version of the menu on a page that I'm building. It's built entirely with CSS. When I added the menu to it there was some major flickering going on when I rolled over one of the main topics in the parent level. This only happens when viewing it in Firefox; IE seems to be happy with it.
Thinking it might be better if I use the latest version, I downloaded it this evening and just put it on the page "right out of the box". I didn't worry about positioning for the moment; I just wanted to see what it would do. Now it's flickering even more.

I did comment out the outfilter and overfilter to see if that had any affect. It didn't. Soo...
1. Can the flickering be fixed?
2. An unrelated question: I know that if I use menuwidth at 100% the menu will "shrink" when a user narrows their browser window. But what if I want to have the menu at a certain width and centered horizontally? Can that be made to shrink as well, at least to a certain point? You'll see on the link below that ideally I'd like to have the menu cover the dark grey bar at the top of the page.
Here's the page I'm working on: link
Thanks for any help!