Does the menu support transparent or semi-transparent backgrounds?
You can have full transparency using the colorname “transparent” for link or menu backgrounds. But partial transparency (opacity) is a problem for Internet Explorer … In theory you can use its Alpha Filter, however IE clips elements which are filtered, and since UDM is a true heirarchical menus (where child menus actually are child elements) you will find that for any menu to which you apply opacity, none of its children are visible. So really you can only apply this filter to a menu which has no child menus. This also applies to PNG backgrounds, which require another proprietary filter to have opacity in IE, which in turn re-creates the original clipping problem. Only IE has this issue – you can use the standard CSS opacity property, or the proprietary -moz-opacity and -khtml-opacity implementations of Mozilla and recent KHTML browsers, and they’ll work fine. You could also have the menu transparent, and use its dropshadow layer as the background – a filtered PNG wouldn’t be a probl
