import flash.display.Sprite;
import fl.transitions.Tween;
import fl.transitions.easing.*;

var box:Sprite = new Sprite();
    box.graphics.beginFill(0xABCDEF);
    box.graphics.drawCircle(0, 0, 10);
    box.graphics.endFill();
    this.addChild(box);

var tweenX:Tween;
var tweenY:Tween;


function moveBox(){
    tweenX = new Tween(box, "x", Strong.easeOut, box.x, getRand(0, stage.stageWidth), 3, true);
    tweenY = new Tween(box, "y", Strong.easeOut, box.y, getRand(0, stage.stageHeight), 3, true);
}

function getRand(min:Number, max:Number){
    return Math.round(Math.random()*(max-min))+min;
}

var timer:Number = setInterval(moveBox, 2500);