on/off graphic to control wav loops, help me!!

Hi i desperately need the code so that i can use two graphics ive created (kind of like a clickable rollover) to turn a music loop on/off. I've basiaclly got a bassbin that i want to change to a broken version and at the same time stop the music and obviously just click the graphic again to start the music again. Please help me i got to get this workin. Btw i diddnt know what html was until a couple of months ago so pls bare that in mind. The code or direction to a helpful source would be really appreciated, thanks, bi !!