Going back and deleting previously given advice is a bit extreme. Plus ... no one has any proof whatsoever that the OP isn't working with a personal scan of a physical book they own. Probably not the case... but still.
I too, prefer not to help those who are helping themselves to "free books," but I also think it's possible to be a bit overzealous in that regard. Is answering a question that strictly concerns ePub coding/formatting really assisting anyone in stealing books? I'd suggest reporting the thread to a moderator (and let them determine if the thread should be closed) rather than pleading to other members not to help (and to, in fact, delete their previous responses).