Most image rollovers use javascript to perform the flip.
You can read a good tutorial here:
http://hotwired.lycos.com/webmonkey/98/23/index3a_page2.html
This site it actually great site period for learning how to design web pages.
You can read a good tutorial here:
http://hotwired.lycos.com/webmonkey/98/23/index3a_page2.html
This site it actually great site period for learning how to design web pages.