Hi Dave, Instead of display:none and display:block to hide and reveal your submenus you need to use top:-999em and top:1.5em (or whatever the vertical offset you need for your menu) respectively. The only other thing you need to once you have swaped 'display' for 'top' is that you will need position:relative on your li elements so that the top offset you add to the ul elements is relative to their parent list items.
Tested in Firebug and works perfect. Good luck. Joel Birch.
