Development Flash ActionScript

//ProgressBar
package {
    import flash.display.Sprite;
    import flash.media.Sound;
    import flash.net.URLRequest;
    import flash.events.Event;
    
    public class Main extends Sprite {
        private var _sound:Sound;
        var i:int = 1;
        public function Main(  ) {
            addEventListener(Event.ENTER_FRAME, onEnterFrame);
        }
        
        public function onEnterFrame(event:Event):void
        {
            var barWidth:int = 200;
            var barHeight:int = 5;
            var loaded:int = i++;
            var total:int = 100;
            if(total > 0) {
                graphics.clear(  );
                graphics.beginFill(0xFFFFFF);
                graphics.drawRect(10, 10, barWidth, barHeight);
                graphics.endFill(  );
                var percent:Number = loaded / total;
                graphics.beginFill(0xCCCCCC);
                graphics.drawRect(10, 10, barWidth * percent, barHeight);
                graphics.endFill(  );
            }
        }
    }    
}