飘动图片新闻添加代码

<div id="ad" style="position:absolute">   <a href="http://www.baidu.com" target="_blank">     <img src="http://www.bgpintl.com/images/hsejianbao.gif" 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 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     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("floatAD()", delay)    obj.onmouseover=function(){clearInterval(itl)}    obj.onmouseout=function(){itl=setInterval("floatAD()", delay)}   </script>  

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