function menu_in(type) {
  path = "./img/";
  if(type == 1){
    document.menu1.src = path + "menu-1-2.gif";
  }
  if(type == 2){
    document.menu2.src = path + "menu-2-2.gif";
  }
  if(type == 3){
    document.menu3.src = path + "menu-3-2.gif";
  }
  if(type == 4){
    document.menu4.src = path + "menu-4-2.gif";
  }
  if(type == 5){
    document.menu5.src = path + "menu-5-2.gif";
  }
  if(type == 6){
    document.menu6.src = path + "menu-6-2.gif";
  }
  if(type == 7){
    document.menu7.src = path + "menu-7-2.gif";
  }
  if(type == 8){
    document.menu8.src = path + "menu-8-2.gif";
  }
  if(type == 9){
    document.menu9.src = path + "menu-9-2.gif";
  }
  if(type == 10){
    document.menu10.src = path + "menu-10-2.gif";
  }
  if(type == 11){
    document.menu11.src = path + "menu-11-2.gif";
  }
  if(type == 12){
    document.menu12.src = path + "menu-12-2.gif";
  }
}

function menu_out(type) {
  path = "./img/";
  if(type == 1){
    document.menu1.src = path + "menu-1-1.gif";
  }
  if(type == 2){
    document.menu2.src = path + "menu-2-1.gif";
  }
  if(type == 3){
    document.menu3.src = path + "menu-3-1.gif";
  }
  if(type == 4){
    document.menu4.src = path + "menu-4-1.gif";
  }
  if(type == 5){
    document.menu5.src = path + "menu-5-1.gif";
  }
  if(type == 6){
    document.menu6.src = path + "menu-6-1.gif";
  }
  if(type == 7){
    document.menu7.src = path + "menu-7-1.gif";
  }
  if(type == 8){
    document.menu8.src = path + "menu-8-1.gif";
  }
  if(type == 9){
    document.menu9.src = path + "menu-9-1.gif";
  }
  if(type == 10){
    document.menu10.src = path + "menu-10-1.gif";
  }
  if(type == 11){
    document.menu11.src = path + "menu-11-1.gif";
  }
  if(type == 12){
    document.menu12.src = path + "menu-12-1.gif";
  }
}