Pure CSS3 Menu

http://wolfcms.office-web.net/extensions/trucs-et-astuces/menu-css3.html

http://www.webdesignerwall.com/demo/css3-dropdown-menu/css-gradient-dropdown.html

http://matthewjamestaylor.com/blog/centered-dropdown-menus

http://snipplr.com/view/41112/multilevel-dropdown-menu-in-puer-css/