var flotante;
var mundooleo;
function ventana2(URL,caracteristicas,alto2,ancho2){
	var ancho = ancho2;
	var alto = alto2;
	var iMyWidth = (window.screen.width - ancho) /2;
	var iMyHeight = (window.screen.height - alto) / 2;
	if (flotante){
		if (flotante.closed){
			flotante = open(URL,'MADRIGAL','' + caracteristicas + ',width='+ ancho2 +',height='+ alto2 +',top=' + iMyHeight + ',left=' + iMyWidth + '');
		}else{
			flotante.close();
			flotante = open(URL,'MADRIGAL','' + caracteristicas + ',width='+ ancho2 +',height='+ alto2 +',top=' + iMyHeight + ',left=' + iMyWidth + '');
		}
	}else{
		flotante = open(URL,'MADRIGAL','' + caracteristicas + ',width='+ ancho2 +',height='+ alto2 +',top=' + iMyHeight + ',left=' + iMyWidth + '');
	}
	flotante.focus();
	flotante.focus();		
}
function ventana(URL,caracteristicas,alto2,ancho2){
	var ancho = ancho2;
	var alto = alto2;
	var iMyWidth = (window.screen.width - ancho) /2;
	var iMyHeight = (window.screen.height - alto) / 2;
	if (mundooleo){
		if (mundooleo.closed){
			mundooleo = open(URL,'MADRIGAL','' + caracteristicas + ',width='+ ancho2 +',height='+ alto2 +',top=' + iMyHeight + ',left=' + iMyWidth + '');
		}else{
			mundooleo.close();
			mundooleo = open(URL,'MADRIGAL','' + caracteristicas + ',width='+ ancho2 +',height='+ alto2 +',top=' + iMyHeight + ',left=' + iMyWidth + '');
		}
	}else{
		mundooleo = open(URL,'MADRIGAL','' + caracteristicas + ',width='+ ancho2 +',height='+ alto2 +',top=' + iMyHeight + ',left=' + iMyWidth + '');
	}
	mundooleo.focus();
	mundooleo.focus();		
}