发一个广告轮播代码！

[Tony]

可以自定义轮播的广告数和间隔时间

<script>
var i=1; 
var j=10; //广告总数，至少两少

var myobj = setInterval("adchange()",5000);  //这里调整你的轮换时间，默认5秒
function adchange() 
{ 
  var k=1;
  i=i+1;
  for (k;k<=j;k++ )
  {
   if(k!=i)
   {
    document.getElementById("ad_"+k).style.display='none'; 
   }
   else
   {
    document.getElementById("ad_"+i).style.display='block'; 
   }
  }
if(i==j) i=0;
} 
</script>
<div id="ad_1" style="display:block"><a href="http://www.1819.net/" target="_blank"><img src="http://www.1819.net/upload/20090724/1.gif" border="0"></a></div>
<div id='ad_2' style='display:none'><a href="http://www.1819.net/" target="_blank"><img src='http://www.1819.net/upload/20090724/2.gif' border="0"></a></div>
<div id='ad_3' style='display:none'><a href="http://www.1819.net/" target="_blank"><img src='http://www.1819.net/upload/20090724/3.gif' border="0"></a></div>
<div id='ad_4' style='display:none'><a href="http://www.1819.net/" target="_blank"><img src='http://www.1819.net/upload/20090724/4.gif' border="0"></a></div>
<div id='ad_5' style='display:none'><a href="http://www.1819.net/" target="_blank"><img src='http://www.1819.net/upload/20090724/5.gif' border="0"></a></div>
<div id='ad_6' style='display:none'><a href="http://www.1819.net/" target="_blank"><img src='http://www.1819.net/upload/20090724/6.gif' border="0"></a></div>
<div id='ad_7' style='display:none'><a href="http://www.1819.net/" target="_blank"><img src='http://www.1819.net/upload/20090724/7.gif' border="0"></a></div>
<div id='ad_8' style='display:none'><a href="http://www.1819.net/" target="_blank"><img src='http://www.1819.net/upload/20090724/8.gif' border="0"></a></div>
<div id='ad_9' style='display:none'><a href="http://www.1819.net/" target="_blank"><img src='http://www.1819.net/upload/20090724/9.gif' border="0"></a></div>
<div id='ad_10' style='display:none'><a href="http://www.1819.net/" target="_blank"><img src='http://www.1819.net/upload/20090724/10.gif' border="0"></a></div>