function Marquee (demo, demo1, demo2, direction, delay, step)
{
 direction = direction.toLowerCase();
 if(((direction == "up" || direction == "down") && ($(demo1).offsetHeight > $(demo).offsetHeight)) || ((direction == "left" || direction == "right") && ($(demo1).offsetWidth > $(demo).offsetWidth)))
 {
  $(demo2).innerHTML = $(demo1).innerHTML;
  if(direction == "down")
   $(demo).scrollTop = 2 * $(demo1).offsetHeight - $(demo).offsetHeight;
  if(direction == "right")
   $(demo).scrollLeft = 2 * $(demo1).offsetWidth - $(demo).offsetWidth;
 }
 else
  return;
 
 var flag = true;
 var speed = delay == null? 1 : parseInt(delay);
 var amount = step == null? 1 : parseInt(step);
 var Marquee = function ()
 {
  switch(direction)
  {
   case "up":
    if($(demo2).offsetTop - $(demo).scrollTop <= 0)
     $(demo).scrollTop -= $(demo1).offsetHeight;
    else
     $(demo).scrollTop += amount;
    break;
   case "down":
    if($(demo1).offsetTop - $(demo).scrollTop >= 0)
     $(demo).scrollTop += $(demo2).offsetHeight;
    else
     $(demo).scrollTop -= amount;
    break;
   case "left":
    if($(demo2).offsetWidth - $(demo).scrollLeft <= 0)
     $(demo).scrollLeft -= $(demo1).offsetWidth;
    else
     $(demo).scrollLeft += amount;
    break;
   case "right":
    if($(demo).scrollLeft <= 0)
     $(demo).scrollLeft += $(demo2).offsetWidth;
    else
     $(demo).scrollLeft -= amount;
    break;
   default:break;
  }
 }
 var timer = setInterval(Marquee,speed);
 var play = function ()
 {
  if(flag)
  {
   clearInterval(timer);
   timer = setInterval(Marquee, speed);
  }
 }
 $(demo).onmouseover = function ()
 {
  if(flag)
   clearInterval(timer);
 }
 $(demo).onmouseout = function ()
 {
  if(flag)
   timer = setInterval(Marquee, speed);
 }
 this.delay = function (s)
 {
  speed = s == null? 50 : parseInt(s);
  play();
 }
 this.step = function (s)
 {
  amount = s == null? 1 : parseInt(s);
  play();
 }
 this.start = function ()
 {
  if(!flag)
  {
   flag = true;
   play();
  }
 }
 this.stop = function ()
 {
  if(flag)
  {
   flag = false;
   clearInterval(timer);
  }
 }
 this.direction = function (s)
 {
  s = s.toLowerCase();
  if( s == direction )
   return;
  if(s == "down" && direction == "up" )
   direction = s;
  if(s == "up" && direction == "down")
   direction = s;
  if(s == "right" && direction == "left")
   direction = s;
  if(s == "left" && direction == "right")
   direction = s;
  if (s == direction)
   play();
 }
}