//向上滚动
function UpScrollTop(prefix){
  var demo_ti=0;
  var demo_t0=document.getElementById(prefix+"0");
  var demo_t1=document.getElementById(prefix+"1");
  var demo_t2=document.getElementById(prefix+"2");
  demo_t2.innerHTML=demo_t1.innerHTML+demo_t1.innerHTML;
  function demo_Marquee(){
    if (demo_ti==1)return
    if(demo_t2.offsetTop-demo_t0.scrollTop<=0)
      demo_t0.scrollTop-=demo_t1.offsetHeight
    else
      demo_t0.scrollTop++
  }
  setInterval(demo_Marquee,20)
  demo_t0.onmouseover=function(){demo_ti=1};
  demo_t0.onmouseout=function(){demo_ti=0};
}
//向左滚动
function LeftScrollTop(prefix){
  var demo_ti=0;
  var demo_t0=document.getElementById(prefix+"0");
  var demo_t1=document.getElementById(prefix+"1");
  var demo_t2=document.getElementById(prefix+"2");
  demo_t2.innerHTML=demo_t1.innerHTML
  function demo_Marquee(){
    if (demo_ti==1)return
    if(demo_t2.offsetLeft-demo_t0.scrollLeft<=0)
      demo_t0.scrollLeft-=demo_t1.offsetWidth
    else
      demo_t0.scrollLeft++
  }
  setInterval(demo_Marquee,20)
  demo_t0.onmouseover=function(){demo_ti=1};
  demo_t0.onmouseout=function(){demo_ti=0};
}