I want to show only three submenus at a time, when I point at the last item, submenu moves down and next one appear. now because I have to show only three submenu, the first item must be hidden.

some thing like this, happen for first item in showed sub menus. when the sub menus move up, the last item must be hidden.

I'm really get confused.

I'm still new to jQuery so any suggestions will be greatly appreciated.

Thanks.