Terrible obfuscated javascript advertisements, don't go there.
So,
i made an Server at kilu.de, an Free Hoster, where i can Test and modify that Script.
So i loaded all the Files that i Extract on my Webserver.
Then i install that and could make an Account.
My Friends can make an Account too, but if they go on that Site and put their Username and Password and click on Login, that MSG Comes:

What in English means:
Error: connection failed
Firefox can not connect to the server under social-network.de.pl.
The site could be temporarily unavailable, please try again
later.
If you can open any pages, check your
Network connection.
If your computer or network by a firewall or proxy is protected,
please make sure that Firefox is permitted to access the Internet.
EDIT:
Maybee the Webserver is too Bad for that Script, you know some Webservers for Free, on that Elgg is working?
/Push
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