Another alterative is JSFlot, which is Open Source and released via Google Code. JSFlot Google Code Site under the MIT license.
There is also a Live Demonstration of JSFlot here: JSFlot Live Demo
Some example charts generated with JSFlot:
JSFlot - Open Source JSF Chart library for drawing in-browser interactive charts.
Weeds: because mother nature refuses to be your personal bitch. But this tiny ad is willing: