var Menus = new Array ("MenuPrinc"); //Array com os id's dos menus

function InicMenus () {
	for (var i=0; i<Menus.length; i++) {
		SetMenu(Menus[i]);
	}
}

function SetMenu (strMenu) {

	var oMenu		= document.getElementById(strMenu);
	var arrItens	= oMenu.getElementsByTagName("li");
	var arrSubs		= oMenu.getElementsByTagName("ul");
	
	// Oculto os sub-menus --------------------------
	
	for (var i=0; i<arrSubs.length; i++) {
		arrSubs[i].style.display = "none";
	}
	
	//-----------------------------------------------
	
	for (var i=0; i<arrItens.length; i++) {
		arrItens[i].onmouseover = function () {
			ShowSubMenu (this);
		}
		
		arrItens[i].onmouseout = function () {
			HideSubMenu (this);
		}
	}
}

function ShowSubMenu (oItem) {
	var oSubItem	= oItem.getElementsByTagName("ul")[0];
	
	oSubItem.style.display = "block";
}

function HideSubMenu (oItem) {
	var oSubItem	= oItem.getElementsByTagName("ul")[0];
	
	oSubItem.style.display = "none";
}

window.onload = InicMenus;