Active menu systems
http://www.twinhelix.com/ deployed at hispanolaval.com
round edged menu is the prettiest expanding menu http://www.dynamicdrive.com/dynamicindex1/slashdot.htm
expand and reduce length on header click (try the red one) http://www.dynamicdrive.com/dynamicindex17/ddaccordionmenu.htm
looks like windows explorer files http://www.dynamicdrive.com/dynamicindex1/navigate1.htm
keywords : menu web site
