I'm afraid you have to give me more details.

My only involvement with Cool Reader is about 4 days old (when I started to look for some alternate reader for my rooted Nook, then I understood it is open source and I remembered I wanted this feature, found out how to get the sources and that's pretty much it). I did not use git before (so I do not know how to post the hack on git - I remember seeing "read-only" next to the link I used to get the sources) and I do not know what other forums are there for cool reader (I found the link to this forum on CR page and I tried here). And I do not know russian.