Revision 149185

Replaced the Lenya menu with a standards-based implementation by Jon Linczak. New features:
* It is now possible to have more (or less) than 4 menus
* The area tabs are now internationalized
* The new menu displays properly with serialization set to XHTML
* The menu javascript code is now far more robust (and simpler)
* Area tabs now have a hover effect
* Accessibility is improved (by doing away with tables for the menu, and using lists)
This resolves http://issues.apache.org/bugzilla/show_bug.cgi?id=33024