Animating with code may seem intimidating at first, but don’t worry – the GreenSock Animation Platform (GSAP) was engineered to make it simple and intuitive. The platform is also highly optimized for performance and unprecedented flexibility. Hang in there through the learning curve and you’ll be glad you did. For now, we’ll focus on getting you up and running with the core engine, TweenLite. Then we’ll discuss if and when you might want to put the other tools to work (like TweenMax, TimelineLite, TimelineMax, etc.). If you’ve used the Flash version of the platform, you should notice that the syntax is identical (although you’ll definitely want to read up on the CSSPlugin and check out the FAQ section).
http://www.greensock.com/as/docs/tween/com/greensock/plugins/package-detail.html
