function slideLine(box,stf,delay,speed,h)
{
  var slideBox = document.getElementById(box);
  var delay = delay||1000,speed = speed||20,h = h||20;
  var tid = null,pause = false;
  var s = function(){tid=setInterval(slide, speed);}
  var slide = function(){
    if(pause) return;
    slideBox.scrollTop += 1;
    if(slideBox.scrollTop%h == 0){
      clearInterval(tid);
      slideBox.appendChild(slideBox.getElementsByTagName(stf)[0]);
      slideBox.scrollTop = 0;
      setTimeout(s, delay);
    }
  }
  slideBox.onmouseover=function(){pause=true;}
  slideBox.onmouseout=function(){pause=false;}
  setTimeout(s, delay);
}