I am actually new to css (it's easy) but I ran across problems building buttons.  Currently they are simple buttons instead of pictures, I would like to use my buttons though.  After trying severel different things I finally found out I need to put both the lit up button and un-lit button on the same picture, then tell the script to call a certain point on the picture.  Am I correct or am I wasting my time?  How do you guys line up your buttons on the same picture and easily know how to point to them with css?