function alternaVista(sRengId, sCtrlId, sTipMas, sTipMenos) {
	var oReng = document.getElementById(sRengId);
	var oCtrl = document.getElementById(sCtrlId);
	if (oReng.style.display != '') {
		oReng.style.display = '';
		oCtrl.src   = 'imagenes/infoMenos.gif';
		oCtrl.title = sTipMenos;
	}
	else {
		oReng.style.display = 'none';
		oCtrl.src   = 'imagenes/infoMas.gif';
		oCtrl.title = sTipMas;
	}
}

function expandeTodo(sRengsName, sCtrlsName, iNumRengs, sTip, sCeldaId, sTitCelNoCtrl) {
	for (var i = 1; i <= iNumRengs; i++) {
		var sCelContId = sCeldaId + i;
		var oCelCont = document.getElementById(sCelContId);
		if (oCelCont.title != sTitCelNoCtrl) {
			var sRengId = sRengsName + i;
			var sCtrlId = sCtrlsName + i;
			var oReng = document.getElementById(sRengId);
			var oCtrl = document.getElementById(sCtrlId);
			oReng.style.display = '';
			oCtrl.src   = 'imagenes/infoMenos.gif';
			oCtrl.title = sTip;
		}
	}
}

function contraeTodo(sRengsName, sCtrlsName, iNumRengs, sTip, sCeldaId, sTitCelNoCtrl) {
	for (var i = 1; i <= iNumRengs; i++) {
		var sCelContId = sCeldaId + i;
		var oCelCont = document.getElementById(sCelContId);
		if (oCelCont.title != sTitCelNoCtrl) {
			var sRengId = sRengsName + i;
			var sCtrlId = sCtrlsName + i;
			var oReng = document.getElementById(sRengId);
			var oCtrl = document.getElementById(sCtrlId);
			oReng.style.display = 'none';
			oCtrl.src   = 'imagenes/infoMas.gif';
			oCtrl.title = sTip;
		}
	}
}