js 向上滚动新闻代码

1，

<style>a{display:block;font-size:15px};</style>
<div )
function myfunc(){
var o=d.firstChild
d.removeChild(o)
d.appendChild(o)
}
d.onmouseover=function(){clearInterval(t)}
d.onmouseout=function(){t=setInterval(myfunc,1000)}
</script>

2，

<div >

marqueesHeight=200;
stopscroll=false;

with(marquees){
   style.width=0;
   style.height=marqueesHeight;
   style.overflowX="visible";
   style.overflowY="hidden";
   noWrap=true;
   onmouseover=new Function("stopscroll=true");
   onmouseout=new Function("stopscroll=false");
}
document.write('<div ></div>');

preTop=0; currentTop=0;

function init(){
   templayer.innerHTML="";
   while(templayer.offsetHeight<marqueesHeight){
     templayer.innerHTML+=marquees.innerHTML;
   }
   marquees.innerHTML=templayer.innerHTML+templayer.innerHTML;
   setInterval("scrollUp()",10);
}
document.body.onload=init;

function scrollUp(){
   if(stopscroll==true) return;
   preTop=marquees.scrollTop;
   marquees.scrollTop+=1;
   if(preTop==marquees.scrollTop){
     marquees.scrollTop=templayer.offsetHeight-marqueesHeight;
     marquees.scrollTop+=1;
   }
}
</script>