var niveaux_h = new Array();
niveaux_h[0] = level_1_builder_h();
niveaux_h[1] = level_2_builder_h();

/* Niveau 1 */
function level_1_builder_h() {
		
	var racine = document.createElement("ul");
	racine.innerHTML = "<li class=\"_item\"><a href=\"#\"><span><span class=\"_txt\"></span></span></a></li>";
	
	return racine;
}

/* Niveau 2 */
function level_2_builder_h() {
	
	var racine = document.createElement("ul");
	racine.innerHTML  = "<li class=\"_item\"><a href=\"#\"><span><span class=\"_txt\"></span></span></a></li>";
	
	return racine;
}