I would highly recommend watching Chris' screencast located at the URL below. I think it would become a little more intuitive to you after watching a time or two and probably a little easier to understand and grasp what's going on. I know it was for me.
I have a set of images for the normal link button and a set of images for the hover button.
How do I code it so that when someone hovers over the button it will change to the second image.
I need it in a horizontal navbar too.
the website is here
http://petermitchell.net23.net
I would highly recommend watching Chris' screencast located at the URL below. I think it would become a little more intuitive to you after watching a time or two and probably a little easier to understand and grasp what's going on. I know it was for me.
http://css-tricks.com/video-screencasts/7-three-state-menu/