HTML question: Using images as buttons on forms

[Bert Coenen]

Dear all,

I inherited a small database with a web interface (MySQL and PHP) from a 
colleague. I'm working on the lay-out of the search form and would like to use 
images in stead of plain buttons. For the submit button it's easy, you just 
replace it with an image, but what about the reset button? If I simply replace 
it with an image, it acts as a second submit button, does anyone know how to 
get an image to reset a form?

example:  http://www.law.kuleuven.ac.be/lib/videotheek/videotheek.htm (with 
two plain buttons)