get height e width

[GunraY]

onClipEvent(data){
sfondodinamico._x=this._x-this._width/2 -20;
sfondodinamico._y=this._y-this._heigth/2 -20;
sfondodinamico._width=this._width+40;
sfondodinamico._height=this._height+40;
}