Thread: "expand to show full article" prompt on forum?

I don't know where this sh*t comes from, but this morning I got it again. I inspected the source of web page and found this:

Code:

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I tried to find the __ez_show_gateway function, but I did not found in source code. After that I tried to get all of external Javascript sources of web page and found it.
This function (__ez_show_gateway) came from [Only registered and activated users can see links. ]

So I think, if it is a spam or unwanted thing, then the server is infected.

BTW, I delete all cookies in browser and logged in again and accepted cookies on gpspower.net
Now I can browse all topics without this sh*t.