var TITEMS = [ 
 ["Introduction", "vvedenie.htm", "11"],
 ["Basic information about e-mail", "bazovye_svedeniya_ob_elektronnoy.htm", "1",
  ["E-mail client", "pochtovyy_klient.htm", "11"],
  ["Mail server", "pochtovyy_server.htm", "11"],
  ["DNS", "dns.htm", "11"]
 ],
 ["Installing the BatPost server", "ustanovka_servera.htm", "1",
  ["Before installing", "pered_ustanovkoy.htm", "11"],
  ["Server installation", "ustanovka_servera_batpost.htm", "11"],
  ["Primary server configuration", "nachalnaya_nastroyka_servera.htm", "11"],
  ["Creating global administrators", "sozdanie_globalnyh_administra.htm", "11"],
  ["Creating domains", "sozdanie_domenov.htm", "11"],
  ["Creating users", "sozdanie_polzovateley.htm", "11"],
  ["Testing server configuration", "zapusk_i_proverka_rabotosposob.htm", "11"],
  ["Advanced settings", "dopolnitelnye_nastroyki.htm", "11"]
 ],
 ["FAQ", "voprosy_i_otvety.htm", "1",
  ["Server settings", "nastroyka_servera.htm", "11"],
  ["Registration", "registraciya.htm", "11"],
  ["Problems and solutions", "reshenie_problem.htm", "11"],
  ["Logs", "jurnaly.htm", "11"],
  ["Maintaining the server", "obslujivanie_servera.htm", "11"],
  ["Other questions", "prochie_voprosy.htm", "11"]
 ]
];


var FITEMS = arr_flatten(TITEMS);

function arr_flatten (x) {
   var y = []; if (x == null) return y;
   for (var i=0; i<x.length; i++) {
	if (typeof(x[i]) == "object") {
		 var flat = arr_flatten(x[i]);
		 for (var j=0; j<flat.length; j++)
			 y[y.length]=flat[j];
} else {
		 if ((i%3==0))
		y[y.length]=x[i+1];
}
   }
   return y;
}