请大家帮我实现这个功能,我先啃饭去了.

以下是播放MP3的进度, 但加载的进度不知道怎么弄, 顶一下<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<META http-equiv=Content-Type content="text/html; charset=GB2312">
<META content="MSHTML 6.00.2900.3354" name=GENERATOR>
<style type="text/css">
.progressBar { padding-top: 5px; }
.progressBarBox { width: 350px; height: 20px; border: 1px inset; background: #eee;}
.progressBarBoxContent {position:relative; width: 0; top: -20px; border-right: 1px solid #444; background: #9ACB34; filter:Alpha(opacity=70);}
</style>
<object id="player" height="64" width="260" classid="CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6" style="display:none">
</object>
<SCRIPT LANGUAGE="JavaScript">
<!--
/* Licence:
*   Use this however/wherever you like, just don't blame me if it breaks anything.
*
* Credit:
*   If you're nice, you'll leave this bit:
*
*   Class by Pierre-Alexandre Losson -- http://www.telio.be/blog
*   email : [email protected]
*/
var GetE=document.getElementById; var Player=function(filename,url)
{
this.FileName=filename;
this.text=null;
this.bar=null;
this.Url=url;
this.interVal=null;
this.Root=null;
} Player.prototype.Instance=null; Player.prototype.player=GetE("player"); Player.prototype.Create=function()
{
Player.prototype.Instance=this; var root=document.createElement("DIV");
root.className="progressBar";
root.onclick=this.Play; var leaf=document.createElement("DIV");
root.appendChild(leaf); this.text=document.createElement("DIV");
this.text.className="progressBarBox";
this.text.innerText=this.FileName;
leaf.appendChild(this.text); this.bar=document.createElement("DIV");
this.bar.className="progressBarBoxContent";
leaf.appendChild(this.bar); document.body.appendChild(root);
this.Root=root;
} Player.prototype.Play=function()
{
Player.prototype.Instance.Root.onclick=Player.prototype.Instance.Pause;
Player.prototype.Instance.player.controls.stop();
Player.prototype.Instance.player.url=Player.prototype.Instance.Url;
Player.prototype.Instance.player.controls.play();
var test=window.setInterval(Player.prototype.Instance.Progress,100);
Player.prototype.Instance.interVal=test;
Player.prototype.Instance.player.onPlayStateChange=new function()
{
if(Player.prototype.Instance.player.PlayState==1)
{
window.clearInterval(Player.prototype.Instance.interVal);
}
};
} Player.prototype.Pause=function()
{
Player.prototype.Instance.Root.onclick=Player.prototype.Instance.RePlay;
Player.prototype.Instance.player.controls.pause();
} Player.prototype.RePlay=function()
{
Player.prototype.Instance.player.controls.play();
} Player.prototype.Progress=function()
{
var a=Player.prototype.Instance.player.controls.currentPosition;
var b=Player.prototype.Instance.player.currentMedia.duration;
if (b>a)
{
var progressPercent = Math.ceil((a / b) * 100);
Player.prototype.Instance.bar.style.width = parseInt(progressPercent * 3.5) + "px";
}
} function show(obj)
{
for(var test in obj)
alert(test)
}
//-->
</SCRIPT>
</HEAD>
<BODY>
<SCRIPT LANGUAGE="JavaScript">
<!--
var a=new Player("九局下半","http://yin.douqun.com/674/1.mp3");
a.Create();
//-->
</SCRIPT>
</BODY>
</HTML>