buttonMenu = new Array();
for (i=1; i<=15; i++){
   buttonMenu[i] = new Image();
   buttonMenu[i].src = "/img/menu-" + i + "-on.gif";
}
function menuOn(n){
   document.images['menu'+n].src = buttonMenu[n].src
}
function menuOff(n){
   document.images['menu'+n].src = "/img/menu-" + n + "-off.gif";
}

buttonMenuE = new Array();
for (i=0; i<=4; i++){
   buttonMenuE[i] = new Image();
   buttonMenuE[i].src = "/img/menuE-" + i + "-on.gif";
}
function menuOnE(n){
   document.images['menuE'+n].src = buttonMenuE[n].src
}
function menuOffE(n){
   document.images['menuE'+n].src = "/img/menuE-" + n + "-off.gif";
}

buttonMenuG = new Array();
for (i=0; i<=5; i++){
   buttonMenuG[i] = new Image();
   buttonMenuG[i].src = "/gs/img/menuG-" + i + "-on.gif";
}
function menuOnG(n){
   document.images['menuG'+n].src = buttonMenuG[n].src
}
function menuOffG(n){
   document.images['menuG'+n].src = "/gs/img/menuG-" + n + "-off.gif";
}

buttonMenuEG = new Array();
for (i=0; i<=4; i++){
   buttonMenuEG[i] = new Image();
   buttonMenuEG[i].src = "/gs/img/menuEG-" + i + "-on.gif";
}
function menuOnEG(n){
   document.images['menuEG'+n].src = buttonMenuEG[n].src
}
function menuOffEG(n){
   document.images['menuEG'+n].src = "/gs/img/menuEG-" + n + "-off.gif";
}