css实现的对联广告代码

.couplet_ad
/ 底部固定/{position:fixed;bottom:auto; :0; width: 120px; height: 230px; z-index:99999; margin-:158px;}
html .couplet_ad
/ IE6 底部固定/{_position:absolute;
_bottom:auto;
_:expression(eval(document.documentElement.scrollTop));}
.couplet_ad a{ display:block; cursor:pointer;}
#ad_left{ left: 0px;}
#ad_right{ right: 0px;}
 

<div class="couplet_ad" id="ad_left">
<a target="_blank" href=""><img src="dl.jpg"></a>
<a onClick="ad_left();">关闭</a>
</div>
 

<div class="couplet_ad" id="ad_right">
<a target="_blank" href=""><img src="dl.jpg"></a>
<a  onClick="ad_right();">关闭</a>
</div>
 

<script language="javascript">
function ad_left(){
document.getElementById('ad_left').style.display="none";
}
function ad_right(){
document.getElementById('ad_right').style.display="none";
}
</script>