Hata nerde Acaba

ark.lar asp sayfamda reklam kodlarıyla ilgili bi hata olusmakta firefox sorunsuz çalışmakta fakat ie de hata var firefoxda reklam çıkıyor fakat ie de reklam çıkıyor sonra oyun açmıyor bi bakabilrmisiniz

<script type="text/javascript">
setTimeout('gizle()',15000);
function gizle() {
var x=document.getElementById('birinci').style;
var y=document.getElementById('oyun').style;
if(x.display=='block') { x.display='none'; y.display='block'; }
else { x.display='block'; y.display='none'; }
}
</script>
<div id=birinci style=display:block;>
<div class="reklam8">
<p align="center">
<b><font size="4" color="#8CB43C" face="Tahoma">Serverla Bağlantı Kurulup, Oyun Açılıyor...</font></b><br>
<img border="0" src="images/yukleniyor.gif" width="350" height="26"><br>
<iframe name="I3" height="240" width="120" scrolling="no" align="center" border="0" frameborder="0" src="adsreklam7oku.asp">
Your browser does not support inline frames or is currently configured not to display inline frames.
</iframe>
&nbsp;
<iframe name="I1" height="280" width="338" scrolling="no" align="center" border="0" frameborder="0" src="adsreklam6oku.asp">
Your browser does not support inline frames or is currently configured not to display inline frames.
</iframe>
&nbsp;
<iframe name="I2" height="240" width="120" scrolling="no" align="center" border="0" frameborder="0" src="adsreklam8oku.asp">
Your browser does not support inline frames or is currently configured not to display inline frames.
</iframe>
</div>
</div>
<div id="oyun" style=display:none;"width:680;border:1px solid black;" align="center" >
<%
width = "680"
height = "480"
%>
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0" 
width="<%=width%>" height="<%=height%>">
<param name= "width" value="<%=width%>" valuetype="data">
<param name= "heighth" value="<%=height%>" valuetype="data">
<param name= "autoplay" value="true" valuetype="data">
<param name= "cache" value="false" valuetype="data">
<param name="game" value="<%=irs("embed")%>">
<param name="quality" value="high">
<param name="enablecontentmenu" value="false">
<embed src="<%=irs("embed")%>" quality="high" pluginspage="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash" 
type="application/x-shockwave-flash" width="<%=width%>" height="<%=height%>">
</embed> 
</object>
<br>
&nbsp;</div>

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