I need simple content locker

Avg Bid (USD)
Project Budget (USD)
$10 - $30

Project Description:
I need simple content locker overlay for my site
custom background and text
it's simple when user landing on my page then page lock with locker and user need to download and install program to open locker.
when user has download and installed program then locker is closed
must easy to use,and working in firefox,chrome, and another browser

sorry for my english

Additional Project Description:
07/25/2013 at 22:14 PET
important: Locker must closed when install is finished

Skills required:
Javascript, PHP
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