user DOUBLE-CLICK'in in submit form button !

I have a annoying problem in a form (mmm potentially all forms). I have a form that after a validation and confirmation inserts data about a sale, BUT an IMPATIENT operator clicks the submit button TWICE and generates TWO records for an only one sale. Is there any way to prevent that? I read that it can be prevented with javascript but I don't found any examples, and I dont know even how to integrate that into QuickForm. Can anybody guide me in the right way? Thanks a lot Jorge Llarens ___________________________________________________________ 100mb gratis, Antivirus y Antispam Correo Yahoo!, el mejor correo web del mundo http://correo.yahoo.com.ar