var img_dir = "images/";
	var imglist = new Array (
	img_dir + "pets_over.gif",
	img_dir + "people_over.gif",
	img_dir + "horses_over.gif",
	img_dir + "fineArt_over.gif",
	img_dir + "giclees_over.gif",
	img_dir + "guests_over.gif",        
	img_dir + "pets_out.gif",
	img_dir + "people_out.gif",
	img_dir + "horses_out.gif",
	img_dir + "fineArt_out.gif",
	img_dir + "giclees_out.gif",
	img_dir + "guests_out.gif"	  
	);

	var imgs = new Array();
	
	var count;
	if (document.images)
	for (count=0; count<imglist.length; count++)
	{
		imgs[count]=new Image(); 
		imgs[count].src=imglist[count];
	}
  
	function swap(refName,imgName)
  {
	  if (document.images)
    {
  		document.images[refName].src = img_dir + imgName;	
  	}
  }