I've looked at ciui and really liked the way that certain links will slide out the existing content and load new content into the DOM, or slide back.
Is there a way to quickly create a work-a-like with the additional animation support in jQuery, scriptaculous, or MooTools?
For anyone coming to this very old discussion, http://www.jqtouch.com/ is a more recent solution that works very well for this. It's a jQuery plugin.