JDDM (Java Drop Down Menu) is a drop down java menu applet, a comprehensive solution for website navigation.
JDDM is browser-independent and highly-configurable, it could be easily customized to fit your website needs and to achieve an unlimited variety of menu appearances and behaviors. JDDM let you generate vertical and horizontal menus with unlimited number of nested pop-up submenus, various color schemes, buttons, fonts, icons and sounds.

Main Features:
browser-independent (require Java 1.1);
unlimited submenus;
menu data can be loaded from an external text file;
submenus can overlap all page elements and even jump outside the browser window;
could be displayed either vertically or horizontally;
customizables charset encoding for each menu item, support international character sets;
ability to call various URL schemas (http, ftp, mailto, javascript, ...);
supports target frames;
customizables font face, font size and font style for each main item and sub-menu items;
customizables shadow effect for each main item text;
customizables background and text colors for each main item and for each state (normal, mouse-over and mouse-click);
customizables background images for each main item and for each state (normal, mouse-over and mouse-click);
customizables image icon for each main item and for each state (normal, mouse-over and mouse-click);
customizables text and icon position inside each main item;
customizables status bar description message for each main item;
customizables sounds for each main item and for each action state (mouse-over and mouse-click);
customizables submenu arrows images and position for each main item and for each state (normal, mouse-over and mouse-click);
customizables submenu relative position;
customizables 3D button bevel and pushed effect for each main item;
customizables buttons distances and internal padding for each border;
ability to enable and disable items;
supports keyboard shortcuts.