Chaos Theory & Butterfly Effect

I heard this words from the movie "the butterfly effect"....

What exactly is chaos? The name "chaos theory" comes from the fact that the systems that the theory describes are apparently disordered, but chaos theory is really about finding the underlying order in apparently random data.
The flapping of a single butterfly's wing today produces a tiny change in the state of the atmosphere. Over a period of time, what the atmosphere actually does diverges from what it would have done. So, in a month's time, a tornado that would have devastated the Indonesian coast doesn't happen. Or maybe one that wasn't going to happen, does. (Ian Stewart, Does God Play Dice? The Mathematics of Chaos, pg. 141)

read more abt it on-
http://www.imho.com/grae/chaos/chaos.html

here is a link for fractal generaotr-
http://www.wackerart.de/fractal_english.html