if (document.images) {            
        img1on = new Image();   img1on.src = "../images/11e.jpg";
	    img2on = new Image();   img2on.src = "../images/flagfrench.gif";
	    img3on = new Image();   img3on.src = "../images/flagjapan.gif"; 
	    img4on = new Image();   img4on.src = "../images/flaggerman.gif";  
	    img5on = new Image();   img5on.src = "../images/flagusengl.gif";   
       			
        img1off = new Image();  img1off.src = "../images/12a.jpg";
 	    img2off = new Image();  img2off.src = "../images/flagfrench2.gif";
 	    img3off = new Image();  img3off.src = "../images/flagjapan2.gif";
 	    img4off = new Image();  img4off.src = "../images/flaggerman2.gif"; 
 	    img5off = new Image();  img5off.src = "../images/flagusengl2.gif";            
        }
    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");        
            }
    }