jsDOMenu
jsDOMenu is a cross-browser navigation menu that is based on DOM. The menu will pop up when you left/right click in certain regions in your web page. You can also configure it to be absolutely positioned, fixed positioned (does not move with the page during scrolling) or statically positioned. It supports unlimited submenus, and submenu will adjust its position appropriately if the cursor is too near the edge. jsDOMenu is 100% HTML/ XHTML valid, and is fully customizable through CSS. Horizontal menu bars are possible by installing jsDOMenuBar. Every menu item can have an icon shown before the display text. Tested and works in many browsers such as Mozilla, Mozilla Firefox/Firebird, Netscape, Opera, Safari, Camino and Microsoft Internet Explorer.