Way to automatically restart a program?
 

Does anyone know of a way to automatically restart a program if it is closed? I work for a small public library and we want to set up a web browser kiosk running Firefox.

Basically, Firefox should start up as soon as the user 'public' logs in and restart itself if a user closes it. I'm guessing this could all be done with shell scripts...

Any advice is greatly appreciated :)

daemon tools might work?, but also could a script that starts when the user logs in, it just checks if firefox is running, if not, run it, then sleep for a bit, then do it all over.