function desplegarT(iNodo,iSubnodos)
	{
	//plegamos todo
	plegar(1,7);
	plegar(2,6);
	desplegar(iNodo,iSubnodos);
}	

function desplegar(iNodo,iSubnodos)
	{
	var sNodo;
	var sRefNodo = "refNodo" + iNodo;
	document.getElementById(sRefNodo).href = "javascript:plegar(" + iNodo + "," + iSubnodos + ");";
	//mostramos subnodos
	for (i=1;i<iSubnodos;i++)
		{ 
		sNodo = "n" + iNodo + "_" + i + "a";
		document.getElementById(sNodo).style.display = "block";
		sNodo = "n" + iNodo + "_" + i + "b";
		document.getElementById(sNodo).style.display = "block";
		sNodo = "n" + iNodo + "_" + i + "c";
		document.getElementById(sNodo).style.display = "block";
		sNodo = "n" + iNodo + "_" + i + "d";
		document.getElementById(sNodo).style.display = "block";
		} 
	i = iSubnodos;
	sNodo = "n" + iNodo + "_" + i + "a";
	document.getElementById(sNodo).style.display = "block";
	}	

function plegar(iNodo,iSubnodos)
	{
	var sNodo;
	var sRefNodo = "refNodo" + iNodo;
	document.getElementById(sRefNodo).href = "javascript:desplegarT(" + iNodo + "," + iSubnodos + ");";
	for (i=1;i<iSubnodos;i++)
		{ 
		sNodo = "n" + iNodo + "_" + i + "a";
		document.getElementById(sNodo).style.display = "none";
		sNodo = "n" + iNodo + "_" + i + "b";
		document.getElementById(sNodo).style.display = "none";
		sNodo = "n" + iNodo + "_" + i + "c";
		document.getElementById(sNodo).style.display = "none";
		sNodo = "n" + iNodo + "_" + i + "d";
		document.getElementById(sNodo).style.display = "none";
		} 
	i = iSubnodos;
	sNodo = "n" + iNodo + "_" + i + "a";
	document.getElementById(sNodo).style.display = "none";
}