为什么在firefox里面显示不了flash,我安装的有插件啊

在IE下显示正常，而在firefox里面显示一片空白，请问怎么样才能支持显示啊，firebug也没提示任何错误imgUrl1="index/cycling-lg.jpg";
imgtext1="單車"
imgLink1=escape("productlist.jsp?catid=2");
imgUrl2="index/inline-lg.jpg";
imgtext2="室內滑冰"
imgLink2=escape("productlist.jsp?catid=6");
imgUrl3="index/motorsports-lg.jpg";
imgtext3="機動車"
imgLink3=escape("productlist.jsp?catid=4");
imgUrl4="index/nordic-lg.jpg";
imgtext4="滑雪"
imgLink4=escape("productlist.jsp?catid=7");
imgUrl5="index/triathlon-lg.jpg";
imgtext5="鐵人三項"
imgLink5=escape("productlist.jsp?catid=3"); var focus_width=535
 var focus_height=430
 var text_height=18
 var swf_height = focus_height+text_height
 
 var pics=imgUrl1+"|"+imgUrl2+"|"+imgUrl3+"|"+imgUrl4+"|"+imgUrl5
 var links=imgLink1+"|"+imgLink2+"|"+imgLink3+"|"+imgLink4+"|"+imgLink5
 var texts=imgtext1+"|"+imgtext2+"|"+imgtext3+"|"+imgtext4+"|"+imgtext5document.write('<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0" width="'+ focus_width +'" height="'+ swf_height +'">');
 document.write('<param name="allowScriptAccess" value="sameDomain"><param name="movie" value="index/focus1.swf"><param name="quality" value="high"><param name="bgcolor" value="#F0F0F0">');
 document.write('<param name="menu" value="false"><param name=wmode value="opaque">');
 document.write('<param name="FlashVars" value="pics='+pics+'&links='+links+'&texts='+texts+'&borderwidth='+focus_width+'&borderheight='+focus_height+'&textheight='+text_height+'">');
document.write('</object>');