首先，在要加banner的页面里加如下代码：

另外，将如下代码存为move.js

lstart=0
loop=true
speed=85
pr_step=3
newspeed=800
newspeed2=0

function makeObj(obj,nest){
nest=(!nest) ? '':'document.'+nest+'.'
this.css=(document.layers) ? eval(nest+'document.'+obj):eval(obj+'.style')
this.scrollHeight=(document.layers) ? this.css.document.height:eval(obj+'.offsetHeight')
this.scrollWidth=(document.layers) ? this.css.document.width:eval(obj+'.offsetWidth')
this.up=goUp
this.obj = obj + "Object"
eval(this.obj + "=this")
return this
}

function goUp(speed){
if(parseInt(this.css.top)>-(this.scrollHeight-60)){
this.css.top=parseInt(this.css.top)-pr_step-1
//alert("ok")
setTimeout(this.obj+".up("+speed+")",35)
}else {

if(navigator.appName == "Netscape")
{
tome=setInterval(this.obj+".setClipne()",50)}
else{
tome=setInterval('setClipie()',50)
tmp=divCont.style.clip;
}

}
}

function setClipne(){
this.css.clip.right=this.css.clip.right-pr_step;
this.css.clip.left=this.css.clip.left+pr_step;
temp=parseInt(this.css.clip.right)-parseInt(this.css.clip.left);
if(temp==0)
{clearInterval(tome);
document.divCont.document.divNews.visibility="hide";
document.divCont.visibility="hide";
}
}

function setClipie()
{
newspeed=newspeed-pr_step;
newspeed2=newspeed2+pr_step;
temp="rect(0px "+newspeed+"px 600px "+newspeed2+"px)";
this.css.clip=temp;
if(newspeed{
clearInterval(tome);
divNews.style.display="none"
divCont.style.display="none"
}
}

function slideInit(){
oSlide=makeObj('divNews','divCont')
oSlide.css.top=lstart
oSlide.up(speed)
}
function myload(){
setTimeout("slideInit()",5000);
}

function preload(){
imagename=new Image();
imagename.src="bigmap.jpg";
myload()
}

function MM_reloadPage(init) { //reloads the window if Nav4 resized
if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

document.write("

");
document.write("");
preload()

if (navigator.appName == "Netscape")
{document.write("");
preload()
}

自己注意图片名称就ok了！