Binary/AVL tree animation

[Pattielli]

I used to know about this kind of animation made by some students in Washington States University (?), it was really an interesting project, I think people who don't know anything about tree structures, just need to give it a look, then they can grasp how they work immediately, I have recently tried to search for it again but haven't found anything...I think I forgot the site name...
Anyone here knows of any sites where I can see something similar ?

Thank you very much,

[Pattielli]

Anyone please ?

[robphy]

Something like this?
http://www.seanet.com/users/arsen/avltree.html (from http://www.cs.ust.hk/~gchan/comp171/ )

[Pattielli]

That is what I was looking for,

Thank you so very much,