Having a HELL of a time with a jQuery plugin, any help is greatly appreciated

http://whitelemondesigns.com/test/about.html

I can't for the life of me figure out where I'm going wrong with the scroll bar... I think I've got all the html and css correct, I have to assume there's a javascript error but I can't find it... could I have a javascript conflict? If you guys have any insight I would appreciate it, this is driving me up a wall.