TalkPHP - Proxy that works with Facebook

Hello peeps!

At school, websites like Facebook are blocked. Proxy website, like hidemyass, are also blocked if they are in the database (the program that blocks got the name 'opendns block' and got a giant database)
We had a proxy called 'http://chinoxy.com/' that could fix our problem. Since yesterday, this proxy is blocked for any access.
The first time I visited chinoxy i thought it was a phishing website. I still don't trust this website for the 100%, but care, it works.

Now my question is simple. Are there any open source proxy's that works with Facebook?
The script of chinoxy, but in open source, would be lovely!! :)

If needed, I would program some lines on my own. But don’t have any idea how to begin.

Thx