代码(2)如下:
<!--图片漂浮广告代码开始-->
<div id="pf_ad" style="position:absolute">
<!--链接地址--><a HREF="http://www.shfq.com/ad/" target="_blank">
<!--图片地址--><img src="http://www.shfq.com/ad/pic/xymxh.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("pf_ad")
function floatpf_ad() {
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("floatpf_ad()", delay)
obj.onmouseover=function(){clearInterval(itl)}
obj.onmouseout=function(){itl=setInterval("floatpf_ad()", delay)}
</script>
<!--图片漂浮广告代码结束-->
注释:
var x = 50,y = 60 //浮动层的初始位置,分别对应层的初始X坐标和Y坐标
var xin = true, yin = true //判断层的X坐标和Y坐标是否在在控制范围之内,xin为真是层向右移动,否则向左;yin为真是层向下移动,否则向上
var step = 1 //层移动的步长,值越大移动速度越快
var delay = 10 //层移动的时间间隔,单位为毫秒,值越小移动速度越快