日期:2014-05-16 浏览次数:20314 次
<html> <head> <title>漂浮广告</title> <body> <div id="codefans_net" style="position:absolute"> <!--链接地址--><a href="#" target="_blank"> <!--图片地址--><img src="s/images/list2.jpg" 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("codefans_net") function float() { 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 alert(obj.style.left); 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("float()", delay) obj.onmouseover=function(){clearInterval(itl)} obj.onmouseout=function(){itl=setInterval("float()", delay)} </script> </body> </html>
x = x + step*(xin?1:-1) //就是往右(xin==true)或往左(xin==false)移动