Safari in kiosk mode?

Hi,

Is it possible to turn my machine into kiosk mode with Safari or Firefox?
For now I don't want to use Opera as my website uses Typekit and 3D CSS...

I read mixed reviews about Saft, so wouln't like to throw money just to learn it won't work properly. Could anyone confirm it works?

I'd love to hear from people who successfully turned their Macs into kiosks. Thanks.