Often times in a form, the single most important field is the email address field. If a user inadvertently enters an incorrect address, the method of contact between you and the user is cut off. Here's a script that forces the user to double check whether a valid email is entered before submitting the form. It alerts a box with the entered address upon form submission, and asks the user whether this information is correct or not. Crude yet highly effective way to enforce a valid email entry!
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