if (document.images) {            

           
			img1on = new Image();   img1on.src = "images/japan2.gif"; 
      img2on = new Image();   img2on.src = "images/buyonlinebutton2.gif";  
			img3on = new Image();   img3on.src = "images/downloadbutton2.gif";
			img4on = new Image();   img4on.src = "images/buy_direct_button2.gif";  
			img5on = new Image();   img5on.src = "images/buy_online_button2.gif";  
	    img6on = new Image();   img6on.src = "images/download2.jpg"; 
	                          
      img1off = new Image();  img1off.src = "images/japan.gif";
			img2off = new Image();  img2off.src = "images/buyonlinebutton.gif";
			img3off = new Image();  img3off.src = "images/downloadbutton.gif";
			img4off = new Image();  img4off.src = "images/buy_direct_button.gif";
			img5off = new Image();  img5off.src = "images/buy_online_button.gif";
			img6off = new Image();  img6off.src = "images/download1.jpg";
        }

    function imgOn(imgName) {
            if (document.images) {
                document[imgName].src = eval(imgName + "on.src");       
            }
    }

    function imgOff(imgName) {
            if (document.images) {
                document[imgName].src = eval(imgName + "off.src");        
            }
    }