marqueesHeight=130;//高度 
delaytime = 200; //时间 
scrollupRadio = 1; //速度
stopscroll=false; 
RoolBox2.scrollTop=0;
//设置层的属性
with(RoolBox2)
{   
  style.height=130; 
  style.overflowX="hidden"; 
  style.overflowY="hidden"; 
  noWrap= false 
  onmouseover=new Function("stopscroll=true"); 
  onmouseout=new Function("stopscroll=false"); 
}
//数据输出两次
var strText=RoolBox2.innerHTML;
RoolBox2.innerHTML+=strText+strText+strText+strText; 
//方法
preTop=0; currentTop=0; stoptime=0; 
function scrollUp()
{ 
  if(stopscroll==true) return; 
  currentTop+=1; 
  if(currentTop==marqueesHeight+1)
  {  
   stoptime+=1; 
   currentTop-=1; 
   if(stoptime==delaytime)  
   {  
    currentTop=0; 
    stoptime=0; 
    } 
  } 
  else 
  {
   preTop=RoolBox2.scrollTop; 
   RoolBox2.scrollTop+=1; 
   if(preTop==RoolBox2.scrollTop)
   {  
     RoolBox2.scrollTop=marqueesHeight;
     RoolBox2.scrollTop+=1; 
   }
  }
}


function init_srolltext()
{ 
RoolBox2.scrollTop= 0;
setInterval("scrollUp()",scrollupRadio);
} 
setTimeout("init_srolltext()",5000);