<!--
             menu01on = new Image();
             menu01on.src = "gfx/menu01_on.gif";
             menu01off = new Image();
             menu01off.src = "gfx/menu01_off.gif";
             
             menu02on = new Image();
             menu02on.src = "gfx/menu02_on.gif";
             menu02off = new Image();
             menu02off.src = "gfx/menu02_off.gif";
             
             menu03on = new Image();
             menu03on.src = "gfx/menu03_on.gif";
             menu03off = new Image();
             menu03off.src = "gfx/menu03_off.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;        
                         }

//-->