I just came across another fantastic plug-in for jQuery, my favorite javascript framework. It is the Ribbon plug-in and it looks amazing. It almost exactly like the ribbon in Office 2010.It supports access keys, themes, lists, groups, forms, and dropdown menus. The demo page can be found at http://vinkr.net/ribbon. The code can be found on CodePlex.  Many thanks to Mikael Söderström for creating an awesome jQuery plug-in.

Ribbon with Access keys:

Menu: