Question

两侧随滚动条滚动的广告条

一些网站两侧随滚动条滚动的广告条怎么做的啊？是两侧的哦，不是一侧的~这里要用到两个层的，一边一个。
高手高诉我代码，谢谢！~

Answer 1

<SCRIPT LANGUAGE="JavaScript">
function initEcAd() {
document.all.AdLayer1.style.posTop = -200;
document.all.AdLayer1.style.visibility = 'visible'
document.all.AdLayer2.style.posTop = -200;
document.all.AdLayer2.style.visibility = 'visible'
MoveLeftLayer('AdLayer1');
MoveRightLayer('AdLayer2');
}
function MoveLeftLayer(layerName) {
var x = 5;
var y = 400;
var diff = (document.body.scrollTop + y - document.all.AdLayer1.style.posTop)*.40;
var y = document.body.scrollTop + y - diff;
eval("document.all." + layerName + ".style.posTop = parseInt(y)");
eval("document.all." + layerName + ".style.posLeft = x");
setTimeout("MoveLeftLayer('AdLayer1');", 20);
}
function MoveRightLayer(layerName) {
var x = 5;
var y = 400;
var diff = (document.body.scrollTop + y - document.all.AdLayer2.style.posTop)*.40;
var y = document.body.scrollTop + y - diff;
eval("document.all." + layerName + ".style.posTop = y");
eval("document.all." + layerName + ".style.posRight = x");
setTimeout("MoveRightLayer('AdLayer2');", 20);
}
document.write("<div id=AdLayer1 style='position: absolute;visibility:hidden;z-index:1'><a href=地址 target=_bank><img src=图片地址 width=100 height=150 border=0></a></div>"
+"<div id=AdLayer2 style='position: absolute;visibility:hidden;z-index:1'><a href=地址 target=_bank><img src=图片地址 width=100 height=150 border=0></a></div>");
initEcAd()
//
</SCRIPT>

<br>1<br>2<br>3<br><br><br><br><br><br><br><br><br><br><br><br><br><br>d<br>
<br>1<br>2<br>3<br><br><br><br><br><br><br><br><br><br><br><br><br><br>d<br>
<br>1<br>2<br>3<br><br><br><br><br><br><br><br><br><br><br><br><br><br>d<br>
<br>1<br>2<br>3<br><br><br><br><br><br><br><br><br><br><br><br><br><br>d<br>
<br>1<br>2<br>3<br><br><br><br><br><br><br><br><br><br><br><br><br><br>d<br>