Submit Once?

I once seen a javascript that after you clicked or hit enter in a input field the submit button went to where you cant even click on and when you press enter it has a alert

but i cant find it anywhere google,javascriptsource, all those javascript sites cant find it... does anyone know where i can get it?

put this onSubmit event into the form tag. It will disable the submit button after the form has been submitted. there is no alert, but it should do the trick.
onSubmit="document.formname.submitname.disabled=true"

remember to replace formname with the actual form name and submitname with the actual submit button name

thanks alot! im working on alot of validation on my site! and fixing lots of bugs