Here are some animated Navigation menu effect Tutorials, Resources and Demos. Using jQuery and Mootool framework Library.
Another excellent use of Mootool Library to create awesome effect in Horizontal Navigation
This is a simple Accordion menu done in JQuery. Links with subitems under them will expand the submenu when clicked. Items that don’t have subitems are normal links. The menu initialises with the first submenu expanded.
drop down menu with a sleek “outline” animation added when it drops down, applicable to any anchor link. The menu can be set to appear either via a “click” or “mouseover” of the anchor link.