向上滚动

<div>
<div );
demo2.innerHTML=demo1.innerHTML;
function Marquee(){
if(mode==true)return;
steph+=1;
if (steph>table_height){
stept+=1;
steph-=1;
if(stept>=pause_time){
steph=0;
stept=0;
}
}else{
demo.scrollTop+=1;
if(demo.scrollTop >=table_height*3) {
demo.scrollTop = 0;
}
}
}
MyMar=setInterval(Marquee,speed);
demo.onmouseover=function() {clearInterval(MyMar)};
demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)};
</script>