var menu_id = "left-menu";
//var menu_root;

function GetMenuRoot()
{
	var tag = document.getElementById("left-menu");
	//tag = tag.getElementsByTagName("ul");
	//tag = tag.firstChild;
	return tag;
}

function CloseAllMenu()
{
	var list = document.getElementById(menu_id).getElementsByTagName("ul");
	list = menu_root.getElementsByTagName("ul");
	for(var i=0;i<list.length;i++){
		list[i].style.display = "none";
	}
}

function OpenMenu(node)
{
	var subMenu = node.parentNode.getElementsByTagName("ul")[0];
//alert('MENU');
	subMenu.style.display == "none" ? subMenu.style.display = "block" : subMenu.style.display = "none";
}

function InitMenu()
{
	menu_root = GetMenuRoot(); return;
	
	var list = document.getElementById(menu_id).getElementsByTagName("li");
	for (var i=0;i<list.length;i++)
  {
		list[i].onClick = "OpenMenu(this);";
  //list[i].style.display = "none";
	}
	var list = document.getElementById(menu_id).getElementsByTagName("ul");
	for (var i=0;i<list.length;i++)
  {
		//list[i].style.display = "none";
	}
}