如何实现对联广告的浮动效果且在后台不显示?
单位网站中我加了个对联广告,但不能实现跟随窗口的浮动效果，另外如何在后台不显示，请教高手解答。
代码如下：
<SCRIPT language=JavaScript event=FSCommand() for=dl> 
duilian2.style.visibility='hidden'; 
duilian3.style.visibility='hidden'; 
</SCRIPT>

<SCRIPT language=JavaScript> 
function winload() 
{ 
duilian2.style.top=20; 
duilian2.style.left=5; 
duilian3.style.top=20; 
duilian3.style.right=5; 
} 
if(screen.width>800){ 
{ 
document.write("<div id=duilian2 style='position: absolute;visibility:visible;z-index:1'><EMBED src='left.swf' quality=high WIDTH=100 HEIGHT=300 TYPE='application/x-shockwave-flash' id=dl></EMBED></div>" 
+"<div id=duilian3 style='position: absolute;visibility:visible;z-index:1'><EMBED src='right.swf' quality=high WIDTH=100 HEIGHT=300 TYPE='application/x-shockwave-flash' id=dl></EMBED></div>"); 
} 
winload() ;
} 
</SCRIPT>