var _serviziOpenedMenu = -1;

jQuery(function() {
  jQuery('.SubMenu').each(function() {
    if (this.id != 'subMenu' + _serviziMenuToOpen) {
      jQuery(this).hide();
    }
    else {
      _serviziOpenedMenu = _serviziMenuToOpen;
    }
  });
});

function openSubMenu(id) {
  jQuery('.SubMenu').each(function() {
    jQuery(this).slideUp('slow');
  });
  if (id != _serviziOpenedMenu && jQuery('#subMenu' + id + ' li').length != 0) {
    jQuery('#subMenu' + id).slideDown('slow');
    _serviziOpenedMenu = id;
  }
  else {
    _serviziOpenedMenu = -1;
  }
}