var myLoading:MovieClip; 
var loadInfo:MovieClip;
var _lineBgcolor = "0x666666"; 
var _lineColor = "0x0000FF"; 
var _lineLen:Number = 200; 
var _lineH:Number = 3; 
var _txtColor; var _txtAlign:String = "center"; 
var tb:Number; 
var txtFormat:TextFormat = new TextFormat
("Arial", null, 0x000000, true); myLoading = _root.createEmptyMovieClip("myLoading",10); //进度条
loadInfo = myLoading.createEmptyMovieClip("line", 10); 
loadInfo.lineStyle(1, _lineColor, 20);
loadInfo.moveTo(0, 0);
loadInfo.lineTo(_lineLen, 0); 
loadInfo.lineTo(_lineLen, _lineH); 
loadInfo.lineTo(0, _lineH); 
loadInfo.lineTo(0, 0); //进度显示文本
loadInfo.createTextField("txt", 30, 0, 0, _lineLen, 22);
loadInfo.txt.autoSize = _txtAlign; //设置进度条的位置（居中于主场景）
loadInfo._x = (Stage.width - _lineLen)/2; 
loadInfo._y = Stage.height/2; //获得影片大小并stop，再onEnterFrame 
tb = _root.getBytesTotal(); 
_root.stop(); 
myLoading.onEnterFrame = function(){
var lb:Number = _root.getBytesLoaded();
var percent:Number = Math.round(lb/tb*100);
loadInfo.txt.text = percent+"%"; 
loadInfo.txt.setTextFormat(txtFormat); 
loadInfo.lineStyle(_lineH, _lineBgcolor, 10); 
loadInfo.moveTo(0, _lineH/2); 
loadInfo.lineTo(percent*_lineLen/100, _lineH/2); 
if (percent == 100) { 
   _root.play(); 
   delete this.onEnterFrame; 
   loadInfo.clear(); 
   loadInfo.txt.text = "";
} 
}