将如下代码加入到html页面中就可以看到效果了

<!--图片漂浮广告代码开始-->
<div id="www_panpan_org" style="position:absolute">
<!--链接地址--><a href="http://www.2345.com/?k60366769" _fcksavedurl="/" target="_blank">
<!--图片地址--><img src="http://www.panpan.org/other/2345wangzhidaohang.gif" _fcksavedurl="http://www.panpan.org/other/2345wangzhidaohang.gif" border="0">
</a>
</div>
<script>
var x = 50,y = 60
var xin = true, yin = true
var step = 1
var delay = 10
var obj=document.getElementById("www_panpan_org")
function floatwww_panpan_org() {
var L=T=0
//by www.panpan.org
var R= document.body.clientWidth-obj.offsetWidth
var B = document.body.clientHeight-obj.offsetHeight
obj.style.left = x + document.body.scrollLeft
obj.style.top = y + document.body.scrollTop
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("floatwww_panpan_org()", delay)
obj.onmouseover=function(){clearInterval(itl)}
obj.onmouseout=function(){itl=setInterval("floatwww_panpan_org()", delay)}
</script>
<!--图片漂浮广告代码结束-->


查看上面网页漂浮广告代码效果的页面
http://www.panpan.org/other/2345wangzhidaohang.htm