Apycom jQuery Popup Menu is the smallest, fastest, and one of the most customizable JavaScript hierarchical menus out there. It supports nearly unlimited hierarchical menus with individual colors, styles, and dimensions -- not just a boring old menu bar with one-level, one-color pop outs. Cool menu animation/effects are included as well. This menu can work as a pure CSS pop-up menu; there is no JavaScript being used for the popups.