DynarchMenu

DynarchMenu is a cross-browser and cross-platform DHTML menu, featuring keyboard navigation, high-quality CSS color themes (skins), unlimited menu depth, horizontal or vertical display, context menus, timeouts, and more. The menu is defined in plain HTML as nested lists, as opposed to the pure JavaScript setup that is used in most menus. Aside from being more friendly to search engines, this has the advantage of being extremely easy to generate and degrading well even to non-JavaScript browsers. The code is small and highly optimized for speed.