as2 to as3 the class or interface 'MouseEvent' could not be loaded

im using as2 but the scripts are supposed to be in as3

here's the code in as3:

for (var i:int=0; i<10; i++){

          var newFood:mcFood=new mcFood();

          newFood.buttonMode=true;

          newFood.x = (Math.random()*510);

          newFood.y = (Math.random()*310);

          if(newFood.x>550){

                    newFood.x -=530;

                    }

          if(newFood.y>550){

                    newFood.y -=530;

                    }

          addChild(newFood);

          newFood.addEventListener(MouseEvent.MOUSE_DOWN, mousePressed);

          newFood.addEventListener(MouseEvent.MOUSE_UP, mouseReleased);

}

function mousePressed(myVar:MouseEvent):void{

          myVar.target.startDrag();

          }

function mouseReleased(myVar:MouseEvent):void{

          myVar.target.stopDrag();

          if(myVar.target.hitTestObject(star)){

                    myVar.target.x = -300;

                    myVar.target.y = -30;

                    }

          }

could anyone transform this into as2?