以下IE没问题了,火狐仍不能通过,求修改
<div id="wait" style="margin:auto; display:block; height:400px" align="center">
  loading...
</div><div id="fla" style="z-index:1; position:absolute; width:710px; height:460px; display:none; left:50%; margin:0 0 0 -356px;">
<object id="flashitem" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0" width="710" height="460">
    <param name="movie" value="fla/links.swf" />
    <param name="quality" value="high" />
    <param name="wmode" value="transparent" />
    <embed src="fla/links.swf" quality="high" wmode="transparent" pluginspage="http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash" type="application/x-shockwave-flash" width="710" height="460" name="flashitem_ff"></embed>
  </object>
</div><script language="javascript">
 refreshProgress();
  function refreshProgress() {    
if(window.navigator.userAgent.indexOf("Firefox")>=1)//判断是否为FIREFOX浏览器,FIREFOX不支持PercentLoaded()函数 
    {var nPercentLoaded = Math.abs(document.embeds["flashitem_ff"].PercentLoaded());}
else{
var nPercentLoaded = Math.abs(document.getElementById("flashitem").PercentLoaded());  }      
if(nPercentLoaded==100)   { document.getElementById("wait").style.display = 'none';
document.getElementById("fla").style.display = 'block'; }}
</script>