How can I create this animation.

[Iftikhar Arain]

Please check the following address.

http://www.cs.rmit.edu.au/AI-Search/Product/


An applet appear please tell me how they created this animation
before pressing start button.
set the following setting for an applet.
SETTING ---> TWIN STEP =30
SETTING ---> DEPTH BOUND =15
SETTING ---> INCREMENT =10
ALGORITHM ...> BRANCH / AND BOUND SEARCH.
MY question is how they created this animation.
REgards