I can't read Russian, but you can't put any javascript into your personal text, unless you've changed something.
Try putting <b>test</b> in there. If you're right, your personal text will be bold.
Now, of course, if you have database access you can manually edit the field, and get the effect I assume you describe. For this reason, we suggest you do not give your users phpMyAdmin or MySQL server access.
If you're saying that someone did this to you, I will need you to send me Apache access logs from the time it happened, if possible.
-[Unknown]