we have a website up and running.
there's a "join our mailing list" box on the homepage.
but there's no validation in place!!
so anytime someone clicks "submit" without entering a valid address, the page gets refreshed and they see a "thank you" message.
then we receive a useless email that contains either nothing at all or whatever gibberish they type in.
i need some code and specific instructions as to how to implement the code so that when this happens, the form does not get submitted and the person sees a pop-up window with a message that says, "please enter a valid e-mail address."
this is about a 2-minute job but i'll be happy to paypal $20 to the first person who can send over the info we need :-)