var curID="";
function show(id,curMenu){
  var attivo="";
  if(curID==""){
    document.all[id].style.visibility="visible";
    document.all[id].innerHTML=menu[curMenu];
  }else{
    if(id==curID){
      if(document.all[curID].style.visibility=="hidden"){
        document.all[id].style.visibility="visible";
        document.all[id].innerHTML=menu[curMenu];
      }else{  
        document.all[curID].style.visibility="hidden";
        document.all[curID].innerHTML="";
        attivo="menu-1";
      }
    }else{  
      document.all[curID].style.visibility="hidden";
      document.all[curID].innerHTML="";
      document.all[id].style.visibility="visible";
      document.all[id].innerHTML=menu[curMenu];
    }
  }
  curID=id;
  // salvo nel cookies menu
  if (attivo==""){
    attivo=curID;
  }
  var dtOggi = new Date();
  var dtExpires = new Date();
  dtExpires.setTime(dtOggi.getTime() + 24 * 1 * 3600000); // un giorno
  document.cookie = "menu" + "=" + escape(attivo) + "; expires=" + dtExpires.toGMTString();
}
function menu_aperto(){
  lCid="";
// leggo il cookies menu
  var asCookies = document.cookie.split("; ");
  for (var iCnt = 0; iCnt < asCookies.length; iCnt++){    // ciclo su tutti i cookies
    var asCookie = asCookies[iCnt].split("=");
    if (asCookie[0]=="menu") {
      lCid = (unescape(asCookie[1]));
    }
  }
  if(lCid=="menu0"){
    show('menu0',0);
  }else if(lCid=="menu1") {
    show('menu1',1);
  }else if(lCid=="menu2") {
    show('menu2',2);
  }else if(lCid=="menu3") {
    show('menu3',3);
  }else if(lCid=="menu4") {
    show('menu4',4);
  }else if(lCid=="menu5") {
    show('menu5',5);
  }else if(lCid=="menu6") {
    show('menu6',6);
  }else if(lCid=="menu7") {
    show('menu7',7);
  }else if(lCid=="menu8") {
    show('menu8',8);
  }else if(lCid=="menu9") {
    show('menu9',9);
  }else if(lCid=="menu10") {
    show('menu10',10);
  }else if(lCid=="menu11") {
    show('menu11',11);
  }else if(lCid=="menu12") {
    show('menu12',12);
  }else if(lCid=="menu13") {
    show('menu13',13);
  }
}