The header in my site:

http://www.mazelandglick.com/cart%20files/index.php

Uses some HTML. The site owner would like rollovers, and has provided me with the script.

Where can I find the <body> tag for my page?
(so that I can preload the other button image)

and

Where Can I find the <head> tags
(so that I can place the javascript commands there)


Its obvious that I'm a newbie, but I appreciate all the help I can get.
Thanks in advance!