Javascript popout?

[Killswitch]

I have been looking for a script that will let me create a javascript popout menu similar to that of WalMart.com; when I mouse over a menu flys out that contains several lists. I've checked out all the scripts at DD and haven't seen anything yet, and don't know exactly what they are called. Can anyone help me locate this?

[Snookerman]

I've seen that done with this menu and a bit of tweaking:
http://www.dynamicdrive.com/style/csslibrary/item/jquery_multi_level_css_menu_2/
Here's an example:
http://www.dynamicdrive.com/forums/showthread.php?t=40123&p=177464
If you need a vertical one, you can search around the forums, I think there are a few vertical versions as well.

Good luck!