Yahoo! UI Library

The Menu family of components features a collection of controls that make it easy to add menus to your website or web application. With the Menu Controls you can create website fly-out menus, customized context menus, or application-style menu bars with just a small amount of scripting.

The Menu family of controls features:

• Keyboard and mouse navigation.
• A rich event model that provides access to all of a menu's interesting moments.
• Support for Progressive Enhancement; Menus can be created from simple, semantic markup on the page or purely through JavaScript.