<body>
<div id="Ad" style="position:absolute">
< a href=" " target="_blank">
< img src="照片/mmexport1567744347057.jpg" width="300" height="223" border="0"/></ a></div>\\注意照片位置需要自己调试；
<script>
var x=50,y=60;
var xin=true,yin=true;
var step=1;
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()",10);
obj.onmousemove=function(){clearInterval(itl);}
obj.onmouseout=function(){itl=setInterval("floatAd()",10);}
</script>
</body>
</html>
