Hi everybody!

I have a problem with a menu creation: basically i want that by rolling over the visible menu, the submenu would appear overlapping the first one. Everything works fine with FF, Opera & Safari, while on IE6 the submenu strangely "mixes" with the first one.


(FIREFOX - OK)


(IE - KO)

or the submenu i used the Z-index property as follows:

Code:
li ul{
position: absolute;
left: 50px;
top: 20px;
display: none;
z-index: 9999;
}
But it seems that IE doesn't care about the property...
Does anybody know how to fix this on IE?

MANY THANKS in advance