符合web标准的跟随滚动条运动
YPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.**w*3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
源码如下：
function scrollImg(){
var posX,posY;
if (window.innerHeight) {
posX = window.pageXOffset;
posY = window.pageYOffset;
}
else if (document.documentElement && document.documentElement.scrollTop) {
posX = document.documentElement.scrollLeft;
posY = document.documentElement.scrollTop;
}
else if (document.body) {
posX = document.body.scrollLeft;
posY = document.body.scrollTop;
}
var ad=document.getElementById("ad");
ad.style.top=(posY+100)+"px";
ad.style.left=(posX+50)+"px";
setTimeout("scrollImg()",100);
}
scrollImg
scrollImg();
[Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]
