510348 page exit redirect

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Project Description:
I have a sales page with links to PayPal on it. It offers two different pricing schemes. If the prospect decides to leave the by any means other than clicking one of those two links, I want to redirect him to another URL.

I prefer a JavaScript solution, but a PHP solution would be OK, too.

I would like for the script to work with the attached file. Thanks.

Skills required:
Anything Goes, Javascript, PHP
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