FLASH 加载进度 JS代码

<div id="d1">
<embed type="application/x-shockwave-flash" pluginspage="http://www.adobe.com/go/getflashplayer" id="mgame" name="mgame"  width="640px" height="480px" src="http://www.kfc123.com/test/hai.swf" allowscriptaccess="always" allownetworking="all" wmode="window" quality="high">
</div>
<input id="txt" type="text" value="">
<div id="d2" style="visibility:hidden">
flash已经加载完成
</div>
<script language="javascript">
function ck()
{
var mFlash=document.getElementById("mgame");
var txt=document.getElementById("txt");
txt.value=mgame.PercentLoaded()+"%"
if(txt.value=="100%")
{
document.getElementById("d2").style.visibility="visible"
clearInterval(timer)
}
}
var timer=setInterval("ck()",1000)
</script>