var banner_1_mouseEvent = 1;
  var banner_2_mouseEvent = 1;
  
  function banner_roll(div_id, banner_height, banner_delay, banner_speed, this_height){
  if(eval(div_id + "_mouseEvent")){
  var div_tag = document.getElementById(div_id);
  var a_tag, i;
  this_height++;
  if(this_height < banner_height){
  div_tag.style.top = -this_height;
  setTimeout("banner_roll('" + div_id + "', " + banner_height + ", " + banner_delay + ", " + banner_speed + ", " + this_height + ");", banner_speed);
  }
  else{
  a_tag = div_tag.getElementsByTagName("ul");
  div_tag.appendChild(a_tag[0]);
  div_tag.style.top = 0;
  setTimeout("banner_roll('" + div_id + "', " + banner_height + ", " + banner_delay + ", " + banner_speed + ", 0);", banner_delay);
  }
  }
  else{
  setTimeout("banner_roll('" + div_id + "', " + banner_height + ", " + banner_delay + ", " + banner_speed + ", " + this_height + ");", banner_speed);
  }
  return true;
  }