Two level Navigational menus

Why are you expecting a rails plugin to provide an xhtml navigation
menu? Why not just implement the drop down menu using simply xhtml
(lists) and css?

Try this:
http://www.lwis.net/free-css-drop-down-menu/

Specifically:
http://www.lwis.net/free-css-drop-down-menu/dropdown.ultimate.linear.html

If you want to get fancy (and you use jQuery), try this:
http://users.tpg.com.au/j_birch/plugins/superfish/

Specifically:
http://users.tpg.com.au/j_birch/plugins/superfish/#sample4

HTH.

I am using jQuery now and am interested in using Superfish. Can you
point me to a working example of Superfish and RoR integration?
Thanks.
Bharat