Anyone Know of Any Online Sites to Search Openings?

Sometimes I play a game and fall for an opening trap (or something along those lines), I'd like to be able to replay some of my openings and have a recommended move show (by either an opening book or a GM game).

I know this is possible in Fritz or Chessmaster but are there any simple online versions of these databases?

Where I could simply drag and drop pieces to a position in my game and have it do a database search for similar games?

http://www.chesslive.de/

http://www.365chess.com/

http://www.redhotpawn.com/gamesexplorer/

http://www.eudesign.com/chessops/ch-clear.htm

Youtube has a lot of good tutorials on it.

Good luck>