WebDesignerWall has shared a multi-level mac like css drop down menu. They used border-radius, box-shadow and text-shadow css properties. The menu renders perfectly with Firefox, Safari and Chrome. IE also rendering the menu well without rounded corners and shadows.
Do you remember I have published a post of CSS Tab-Based Navigation Scripts? Some JQuery menus are. Here Im posting about a new drop down menu more efficient for large scale websites. The solution has come up from SohTanaka – Mega Drop Down Menus. According to usability expert Jakob Nielson, mega drop down menus tested to be more efficient for large scale websites.