<!--

             menu1on = new Image();
             menu1on.src = "images/menu01b.gif";
             menu1off = new Image();
             menu1off.src = "images/menu01a.gif";

             menu2on = new Image();
             menu2on.src = "images/menu02b.gif";
             menu2off = new Image();
             menu2off.src = "images/menu02a.gif";

             menu3on = new Image();
             menu3on.src = "images/menu04b.gif";
             menu3off = new Image();
             menu3off.src = "images/menu04a.gif";

             menu4on = new Image();
             menu4on.src = "images/menu05b.gif";
             menu4off = new Image();
             menu4off.src = "images/menu05a.gif";

function img_act(imgName) 
           { imgOn = eval(imgName + "on.src");
             document[imgName].src = imgOn;			 
             }
function img_inact(imgName)          
            {imgOff = eval(imgName + "off.src");
             document [imgName].src = imgOff;	
			 }

// -->