Facebook Like/FAN Gate Javascript/Parsing a signed request

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Bids
5
Avg Bid (USD)
$92
Project Budget (USD)
$30 - $60

Project Description:
Hello,

What i need is a Javascript version of the so called Fan Gate or Like Gate with Javascript (Facebooks JS SDK or the Graph API).

This means that some content is only displayed when a User has already liked a Fanpage.
The Fan Gate will run when implemented in a iframe hosted on my webserver.

The Fan Gate/Like Gate must be developed with Javascript (Facebooks JS SDK / Graph API) as the pages that will be used can not run PHP V5. So the task would be to develop something like parsing the signed request (like in this .php example.
http://www.chilipepperdesign.com/2011/02/15/reveal-fan-gate-like-gate-facebook-iframe-tab-tutorial-with-php)


!!! WHAT I DO NOT WANT:
Already available free solutions that using an old and existing FACEBOOK FBML APP
(known as "Static HTML: iframe tabs" which i know is used by 45 Million Facebook pages already (TM) or solutions that are using the DEPRECIATED <fb:visible-to-connection>.

Again: The Fan Gate or Like Gate must be Javascript as the pages we have as the server that runs the final iframe can not run PHPV5

I can provide some google search querys that help you get started.
I found some solutions in php and also in Javascript but i can not get it to work.

http://stackoverflow.com/questions/5093398/check-if-user-liked-page
http://www.chilipepperdesign.com/2011/02/15/reveal-fan-gate-like-gate-facebook-iframe-tab-tutorial-with-php
http://blog.woodylabs.com/2010/09/facebook-graph-api-is-user-a-fan-of-page-id-using-fql-and-opengraph-to-mimic-pages-isfan/

http://www.google.de/search?q=facebook+javacript+pages.isFan&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:de:official&client=firefox-a
https://developers.facebook.com/docs/reference/javascript/
https://developers.facebook.com/tools/console/

Skills required:
Facebook Marketing, Javascript, Social Networking
About the employer:
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