<div id="ad" style="position:absolute">
<a
href="http://www.scshlx.com/wayne173" target="_blank">
<img
src="http://www.hxlysw.com/images/adminlogo.gif"
border="0">
</a></div>
<script
type="text/javascript">
var x = 50,y = 60;
var xin = true, yin =
true;
var step = 1;
var delay = 10;
var
obj=document.getElementById("ad");
function floatAD() {
var L=T=0;
var
R= document.body.clientWidth-obj.offsetWidth;
var B =
document.body.clientHeight-obj.offsetHeight;
obj.style.left = x +
document.body.scrollLeft + "px";
obj.style.top = y + document.body.scrollTop
+ "px";
x = x + step*(xin?1:-1);
if (x < L) { xin = true; x = L;}
if
(x > R){ xin = false; x = R;}
y = y + step*(yin?1:-1);
if
(y < T) { yin = true; y = T; }
if (y > B) { yin = false; y = B;
}
}
var itl= setInterval(floatAD,
delay);
obj.onmouseover=function(){clearInterval(itl);}
obj.onmouseout=function(){itl=setInterval(floatAD,
delay);}
</script>
<SCRIPT
LANGUAGE="JavaScript">
var s = "网页可见区域宽 ："+
document.body.clientWidth;
s += "\r\n网页可见区域高："+
document.body.clientHeight;
s += "\r\n网页可见区域高："+
document.body.offsetHeight +" (包括边线的宽)";
s += "\r\n网页正文全文宽："+
document.body.scrollWidth;
s += "\r\n网页正文全文高："+
document.body.scrollHeight;
s += "\r\n网页被卷去的高："+
document.body.scrollTop;
s += "\r\n网页被卷去的左："+
document.body.scrollLeft;
s += "\r\n网页正文部分上："+
window.screenTop;
s += "\r\n网页正文部分左："+ window.screenLeft;
s +=
"\r\n屏幕分辨率的高："+ window.screen.height;
s += "\r\n屏幕分辨率的宽："+
window.screen.width;
s += "\r\n屏幕可用工作区高度："+
window.screen.availHeight;
s += "\r\n屏幕可用工作区宽度："+
window.screen.availWidth;
document.write(s);
</script>
http://www.t1xy.com/wayne173 //换成是漂浮图片点击后出现的页面，也就是点击后出现的详细的介绍页面
http://www.t1xy.com/images/adminlogo.gif //换成是漂浮广告图片的URL地址，最好采用绝对路径
var
x = 50,y = 60 //浮动层的初始位置，分别对应层的初始X坐标和Y坐标
var xin = true, yin
= true
//判断层的X坐标和Y坐标是否在在控制范围之内，xin为真是层向右移动，否则向左；yin为真是层向下移动，否则向上
var
step = 1 //层移动的步长，值越大移动速度越快
var delay = 10
//层移动的时间间隔,单位为毫秒，值越小移动速度越快
网页特效”漂浮广告代码”来回跳动的,布布扣,bubuko.com
原文：http://www.cnblogs.com/lukec8650/p/3745225.html