1. Where you see graphics/ you need to change to the location of the file where you keep your graphics on your server.
2. Change graphics/about.jpg to the location and name of your main graphic.
3. You will need 2 graphics. One with the main name (ie. about.jpg) and the other with _ov added to it (ie. about_ov.jpg).
4. Where you see the word about in this script you will need to change to the name of your graphic.