一个傻瓜式显示下载进度的代码

//创建动态文本
this.createTextField("my_txt", 0, 0, 0, 0, 0);
with (my_txt) {
 autoSize = true;
 _x = 170;
 _y = 180;
}
//画背景矩形框
this.createEmptyMovieClip("frame_mc", 1);
with (frame_mc) {
 beginFill(0x000000);
 moveTo(0, 0);
 lineTo(202, 0);
 lineTo(202, 4);
 lineTo(0, 4);
 lineTo(0, 0);
 endFill();
 _x = 174;
 _y = 200;
}
//画矩形
this.createEmptyMovieClip("bar_mc", 2);
with (bar_mc) {
 beginFill(0xFFFFFF);
 moveTo(0, 0);
 lineTo(200, 0);
 lineTo(200, 2);
 lineTo(0, 2);
 lineTo(0, 0);
 endFill();
 _x = 175;
 _y = 201;
 _visible = 0;
}
//进度动画显示
var loaded:Number = 0;
bar_mc.onEnterFrame = function() {
 this._visible = 1;
 loaded = Math.floor(getBytesLoaded()/getBytesTotal()*100);
 if (loaded>=100) {
  bar_mc.removeMovieClip();
  frame_mc.removeMovieClip();
  my_txt.removeTextField();
  gotoAndStop(2);
 } else {
  bar_mc._xscale = loaded;
  my_txt.text = loaded+"%";
  my_txt._x = 170+loaded*2;
 }
};