I have fixed this already.
There was a security hole in one of the scripts someone used to hack a bunch of files and insert a trojan. It didn't effect firefox users, which is why I didn't catch it sooner. I patched the hole and cleaned out all the files already. I also submitted to google to remove the warning now that it is clear. Hopefully they will take care of that soon.
All of the files that were effected were in the http://www.bdsmlibrary.com/tgp/ section of the site. It is now 100% clean and they shouldn't be able to get in again the same way as before.
I'm very sorry to our users that some asshole did this. I will keep a close on things to make sure it doesn't happen again.