Flash navigation bar help

Hi there !

I have this problem with this file I edited a little from http://laco.wz.cz/tween/?page=docs/install, What i want to do is add to all the “buttons” untill 15 links. So when you roll over and click after the animation it loads a picture on the same page where the navigation bar is . The problem is i really dont know what is it i should convert into a button and add the " load image " script =/ … I attached the file here so you can see for yourself =)

Thank u in advanced !