3.0 Menus

I just started playing around with the new menus in 3.0 under Appearance > Menus. I like how customizable it is but is there a way I can make submenu items appear when the parent is clicked or if you are on the parent’s page? Right now they are always visible and I don’t want that.

I’m not that great when it comes to Javascript so if anyone has seen something that works with the new customizable menus in WordPress 3.0, it would be a great help!