Mootools Tutorials
Mootools Effects quickstart guide
Example One: Fx.Style
Increase width
Example Two: Fx.Styles
Increase width & height
Example Three: Fx.Elements
Reduce width on one element, height on another
Using MooTools for animation timings
Example One: onComplete
Increase height, then width
Example Two: onStart
Increase width and Alert
Example Three: Chain
Increase height, then width, then Alert