var AlphaMenuCount = 0;

function showAlphaSubMenu(evnt, menu, alphalet) {
    hideAlphaSubMenuAll();
    menu.style.display = '';
    alphalet.style.backgroundColor = '#cee4c3';
}

function hideAlphaSubMenu(menu) {
    hideAlphaSubMenuAll();
    menu.style.display = 'none';
}

function hideAlphaSubMenuAll() {
    for(i= 1; i <=AlphaMenuCount; i++) {
      menu = eval('alphasubmenu_'+i);
      menu.style.display = 'none';
      alphalet = eval('alphalet_'+i);
      alphalet.style.backgroundColor = '';
    }
}