apPopupMenu l unique cross-browser drop-down menu that allows the submenus to be displayed on top (across) any frame, form, flash; apPopupMenu can even drop down from the your browser window. These features are not available in the menus created with DHTML and javascript. Due to its highly user-configurability you can fully adopt an menu's appearance (such as colors, fonts, image background, icons, sounds, alignment) to fit your website needs. Free. Java source code is available.