浮动广告 .

<div id="ad" style="position:absolute">

<!--链接地址--><a href="​​  target="_blank">

<!--图片地址--><img src="​​  border="0">

</a>

</div>

<script>

var x = 50,y = 60

var xin = true, yin = true

var step = 1

var delay = 20

var obj=document.getElementById("ad")

function ad() {

var L=T=0

//by  ​

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("ad()", delay)

obj.onmouseover=function(){clearInterval(itl)}

obj.onmouseout=function(){itl=setInterval("ad()", delay)}

</script>

<!--图片漂浮广告代码结束-->