i made a webpoll using php (of course). when the user submits the vote, it runs a handler file that updates the polls, sets a cookie, and sets the header location back to the page with the poll. this page will detect the cookie and display poll results and not let the user vote again.
the only problem is, if the user hits the back button, it brings them back to the page where they can vote, again and again. is there any way of making this page detect the cookie?
