if (document.images) {
	  image1on = new Image();
	  image1on.src = "images/nav_01r.gif";
	
	  image2on = new Image();
	  image2on.src = "images/nav_02r.gif";
	
	  image3on = new Image();
	  image3on.src = "images/nav_03r.gif";
	  
	  image4on = new Image();
	  image4on.src = "images/nav_04r.gif";
	  
	  image5on = new Image();
	  image5on.src = "images/tnav_01r.gif";
	
	  image6on = new Image();
	  image6on.src = "images/tnav_02r.gif";
	
	  image7on = new Image();
	  image7on.src = "images/tnav_03r.gif";
	  
	  image8on = new Image();
	  image8on.src = "images/tnav_04r.gif";
	  
	  image9on = new Image();
	  image9on.src = "images/nav_05r.gif";
	  
	  image1off = new Image();
	  image1off.src = "images/nav_01.gif";
	
	  image2off = new Image();
	  image2off.src = "images/nav_02.gif";
	
	  image3off = new Image();
	  image3off.src = "images/nav_03.gif";
	  
	  image4off = new Image();
	  image4off.src = "images/nav_04.gif";
	  
	  image5off = new Image();
	  image5off.src = "images/tnav_01.gif";
	
	  image6off = new Image();
	  image6off.src = "images/tnav_02.gif";
	
	  image7off = new Image();
	  image7off.src = "images/tnav_03.gif";
	  
	  image8off = new Image();
	  image8off.src = "images/tnav_04.gif";
	  
	  image9off = new Image();
	  image9off.src = "images/nav_05.gif";
	
	}
	
	function changeImages() {
	  if (document.images) {
	    for (var i=0; i<changeImages.arguments.length; i+=2) {
	      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
	    }
	  }
	}