var cTree = {
	init: function(){
		var oUlTreeMenu = document.getElementById("tree_menu");
		clearWhiteSpace(oUlTreeMenu);
		var aLiTreeMenu = oUlTreeMenu.getElementsByTagName("li");
		var filho = 0;
		for(var i=0; i<aLiTreeMenu.length; i++){
			if(aLiTreeMenu[i].getElementsByTagName("ul").length > 0){
				filho++;
				aLiTreeMenu[i].style.fontWeight="bold";
				aLiTreeMenu[i].className="fechado";
				//addEvent(aLiTreeMenu[i],"click",cTree.nodeAction);
				addEvent(aLiTreeMenu[i].childNodes[0],"click",cTree.nodeAction);
				//addEvent(aLiTreeMenu[i].childNodes[1],"click",cTree.nodeAction);
				//alert(aLiTreeMenu[i].childNodes[1]);
			}
			else{
				aLiTreeMenu[i].style.fontWeight="normal";
			}
		}
	},

	nodeAction: function(e){
		var oClicked = getSource(e);
		var oLi = oClicked.parentNode;
		if(oLi.className == "fechado"){
			oLi.className="aberto";
			document.getElementById('icone_menu').src = 'imagens/seta_aberta.gif';
		}
		else{
			oLi.className="fechado";
			document.getElementById('icone_menu').src = 'imagens/seta_fechada.gif';
		}
	}

}
addEvent(window,"load",cTree.init);