I have a site that contains an online application. The information is contained from one page to the next using session variables. At the end of the 4-page application, the user hits submit and the information is emailed to the staff. The problem we're having is that many users hit refresh several times and/or back. We wonder what is the best way to prevent this. Im guessing it would be done server-side and this is why im posting it here.
Thanks in advance for any help you can give!!