if (document.layers) { //checks for Netscape 4
     scrollObj = eval('document.' + scroller);
  }
  else if (document.all && !document.getElementById) { //checks for IE 4
     scrollObj = eval('document.all.' + scroller);
  }
  else if (document.getElementById) { //Checks for Netscape 6 & IE 5
     scrollObj = document.getElementById('scroller');
  }
scrollObj.scrollamount=10;

  function scrolling_up()
  {
   scrollObj.direction="up";
  }
  function scrolling_down()
  {
   scrollObj.direction="down";
  }
 function scrolling_right()
  {
   scrollObj.direction="right";
  }
  function scrolling_left()
  {
   scrollObj.direction="left";
  }
  function scrolling_start()
  {
   scrollObj.start();
  }
  function scrolling_stop()
  {
   scrollObj.stop();
  }
  function set_speed(x)
  {
   scrollObj.scrollAmount=x;
  }