GSAP JS is in its final beta stages. There are no known bugs (knock on wood) and it is actively being used in many business-critical sites/apps with great results.
repeat yoyo stagger and more!
TweenMax extends TweenLite so it can do everything TweenLite does plus more while using the same syntax. TweenMax delivers maximum features and convenience whereas TweenLite prioritizes tight file size. The TweenMax JS file also includes several popular plugins (like CSSPlugin, BezierPlugin, and RoundPropsPlugin), more eases, plus TimelineLite and TimelineMax, so there arefewer files to load.