<SCRIPT FOR=window EVENT=onload LANGUAGE="JavaScript">initAd();</SCRIPT>
<script language="JavaScript">
<!--
function initAd() {
document.all.AdLayer.style.posTop = -200;
document.all.AdLayer.style.visibility = 'visible'
MoveLayer('AdLayer');}
function MoveLayer(layerName) {
var x = 900;
var y = 300;
var diff = (document.body.scrollTop + y - document.all.AdLayer.style.posTop)*.40;
var y = document.body.scrollTop + y - diff;
eval("document.all." + layerName + ".style.posTop = y");
eval("document.all." + layerName + ".style.posLeft = x");
setTimeout("MoveLayer('AdLayer');", 20);
}
</script>
<div id=AdLayer style='position:absolute; width:61px; height:59px; z-index:20; visibility:hidden;; left: 600px; top:300px'>
<a  href="#" class="STYLE2" onClick="javascript:window.open('/others/dianhua.htm','InfoDetail','toolbar=no,scrollbars=no,resizable=yes,top=0,left=0,width=620,height=470,');"><img src='/images/kefu.gif' border="0" ></a>
</div>










下面是右侧浮动的代码（比较好用）
<script> 
function myshow() 
{ 
document.all.mydiv.style.top=document.body.scrollTop+100; 
document.all.mydiv.style.left=document.body.clientWidth-document.all.mydiv.clientWidth; 
} 
</script> 
<body onload=myshow() onscroll=myshow()> 
<div id=mydiv style="position:absolute" align=right>
<a  href="#"  onClick="javascript:window.open('/others/dianhua.htm','InfoDetail','toolbar=no,scrollbars=no,resizable=yes,top=0,left=0,width=620 height=470 left=200 top=100');"><img src="/images/kefu.gif" border="0"></a>
<span align=right onclick="document.all.mydiv.style.display='none'">关闭</span>
</div> 