html5小广告怎么写

1.用html怎么做上下滚动的文字或者图片(就跟那种小广告一样~)要完成此效果把如下代码加入到<body>;区域中
<script language="JavaScript">
<!--
done = 0;
step = 1
function anim(yp,yk)
{
if(document.layers) document.layers["napis"].top=yp;
else document.all["napis"].style.top=yp;
【html5小广告怎么写】if(yp>yk) step = -1
if(yp<60) step = 1
setTimeout('anim('+(yp+step)+','+yk+')', 35);
}
function start()
{
if(done) return
done = 1;
if(navigator.appName=="Netscape") {
document.napis.left=innerWidth/2 - 145;
anim(60,innerHeight - 60)
}
else {
napis.style.left=11;
anim(60,document.body.offsetHeight - 60)
}
}
//-->
</script>
<div id="napis" style="position: absolute;top: -50;color: #000000;font-family:宋体;font-size:9pt;">
<p>
<a href=http://typhoon.500.to>;升降文字特效</a>
</p></div>
<script language="JavaScript">
<!--
setTimeout('start()',10);
//-->
</script>

html5小广告怎么写

文章插图