import mx.transitions.Tween;

import mx.transitions.easing.*;

 

var ballAnim:Tween = new Tween (someball,["_x","_y"], Strong.easeOut,[0,400,0,300],2,true);

 

ballAnim.onMotionFinished = function (){

this.yoyo()

}

//////////////Вот мой пример, по другому никак 

import mx.transitions.Tween;

import mx.transitions.easing.*;

function muta(n:Number) {        

        var PageTween:Tween = new Tween(_root.pagini, "_y", Back.easeIn, 480, 2000, 0.5, true);

        var PageTween1:Tween = new Tween(_root.pagini, "_alpha", Back.easeIn, 100, 0, 0.5, true);

        PageTween.onMotionFinished = function() {

                _root.pagini.gotoAndStop(n);

                var PageTween2:Tween = new Tween(_root.pagini, "_y", Elastic.easeOut, -400, 480 , 2, true);

                var PageTween3:Tween = new Tween(_root.pagini, "_alpha", Stong.easeOut, 0, 100, 2, true);

        };

        }