function set_menu_visibility(id, status)
{
  var date = new Date();
  date.setFullYear(date.getFullYear() + 1);
  setCookie('left_menu['+id+']', status, date, '/');
}

function get_menu_visibility(id)
{
  return getCookie('left_menu['+id+']') ? true : false;
}

function toggle_left_menu(id, status, to_show_content)
{
  var e = {collapsed: _ge('left_menu_collapsed_'+id), expanded: _ge('left_menu_expanded_'+id), submenu: _ge('left_submenu_'+id)};

  if (e.submenu || true)
  {
    if (!to_show_content)
    {
      set_menu_visibility(id, status);

      if (e.collapsed) e.collapsed.style.display = status ? 'none' : 'block';
      if (e.expanded) e.expanded.style.display = status ? 'block' : 'none';
      if (e.submenu) e.submenu.style.display = status ? 'block' : 'none';
    }

    if (status)
    {
      for (var i = 0; i < js_content_ids_ar.length; i++)
      {
        var a = js_content_ids_ar[i];

        if (a.id != id)
          toggle_left_menu(a.id, false, a.to_show_content);
      }
    }
  }

  return to_show_content ? true : false;
}