Content Locking Script Needed by goraikkonen

Hello, I am in need of a script that I can put on my website that will lock the site and its contents until a certain action is taken. I am looking for something similar to this: http://www.social-profits.com/cityville/ If this is something you can handle please bid... (Budget: $750-$1500 USD, Jobs: Javascript, MySQL, PHP, Script Install, Software Architecture)
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