Yes that was javascript!!
But how he wrote JS into;
When i try to enter any HTML tags it deletes them

I tried to enter JS to the fourm but.... the same

Überness, there is no redirection from your profile page to that strange site.
There is just a link with name that sendt to your profile page but HREF sends us to that site......
Google®




P.S if you want to ask how I made ®, I answer: Just write & for &, ® for ®, Ü for Ü...