如何在制作网页中插入浮动广告

<SCRIPT>
var imagepath="http://www.cyxxg.com/images-0/qqxy-0003.gif"
var imagewidth=171 //这两行写图片的大小
var imageheight=133
var speed=3;
var imageclick="http://www.cyxxg.com/" //这里写点击图片连接到的地址
var hideafter=0
var isie=0;
if(window.navigator.appName=="Microsoft Internet Explorer"&&window.navigator.appVersion.substring(window.navigator.appVersion.indexOf("MSIE")+5,window.navigator.appVersion.indexOf("MSIE")+8)>=5.5) {
isie=1;
}
else {
isie=0;
}
if(isie){
var preloadit=new Image()
preloadit.src=imagepath
}
function pop() {
if(isie) {
x=x+dx;y=y+dy;
oPopup.show(x, y, imagewidth, imageheight);
if(x+imagewidth+5>screen.width) dx=-dx