Level 21

Level 21 URL: http://www.ouverture-facile.com/riddles/pickles/chat.htm

Clue: The answer is on me

This page shows a guy from three different angles: left room, front room, right room. They correspond to:

http://www.ouverture-facile.com/riddles/pickles/left.swf
http://www.ouverture-facile.com/riddles/pickles/front.swf
http://www.ouverture-facile.com/riddles/pickles/right.swf

Apparently the answer is on him, but you can't see it. Why not try:

http://www.ouverture-facile.com/riddles/pickles/back.swf It gives the following message:

Try: http://www.ouverture-facile.com/riddles/pickles/incorrect.swf

This gives you the answer: decibel.html

Level 22 URL: http://www.ouverture-facile.com/riddles/pickles/decibel.htm