function preload_img()
{ 
  var img_list = preload_img.arguments;
  if (document.preloadlist == null) 
    document.preloadlist = new Array();
  var top = document.preloadlist.length;
  for (var i=0; i < img_list.length; i++) 
  {
    document.preloadlist[i] = new Image;
    document.preloadlist[i].src = img_list[i+1];
  } 
}

var img_num=2;
var direction=1;

// The following function(s) are copyright (c) S. J. Farthing 2008.

function image(number)
{ 
  if(!document.getElementById) return;
  
  var img = document.getElementById('watcher');

  if(number==0)
  {
    if (img) img.src = 'watcher/0.jpg';
  }
  else
  {
    if (img) img.src = 'watcher/'+img_num+'.jpg';
    img_num=img_num+direction;
    if (img_num==4)
    {
      img_num=2;
      direction=-1;
    }
    else if (img_num==0)
    {
      img_num=2;
      direction=1;
    }     

  }


}