Time Waster: Find the Differences

You may have tried this one before. When you click on the link below, you'll see two nearly identical pictures. There are supposedly three differences; I can only find two. If you can find three, you are part of a very small group of elite people (and please, let me know where the third one is). Try it out:

http://members.home.nl/saen/Special/Zoeken.swf

Oh, and uh, sorry beforehand.