Sub menus dropdown over all the objects on the page (select, flash, object, embed). Design personal styles for any submenu and item. Use images for icons, backgrounds of items. Using images you can create menus entirely based on graphics.
Text-based menu You can create a menu with text-based top items. Such menu will be loaded more quickly on your website (in comparison with image-based navigation). Menu structure is comprised of HTML nested UL and LI tags. Standards compliant menu structure is simple to customize and update.
Dynamic Drive- Multiple Level Menus Smooth Navigation Menu is a multi level, CSS list based menu powered using jQuery that ... The menu supports both the horizontal and vertical (sidebar) orientation. ...