"There is one free Widget available on Adobe Exchange "Advanced CSS Menu Light" using jQuery."
Advanced CSS Drop Down Menu Light is a CSS menu. It does not use jQuery, Spry or any other JavaScript framework. It does not use JavaScript at all. In fact this makes it compatible with any framework there is. It can be used alongside any version of jQuery, ExtJS, MooTools, etc. You can even disable JavaScript in your browser and the menu will work.
Modern menus are not about JavaScript, they are about CSS. Some of them may use small portions of JavaScript for added functionality (progressive enhancement), but JavaScript is no longer a key technology in that area
P.S. They are also about semantics.