function cerrar_ventana() {
 document.write('<a href="#" onclick="window.close();" onkeypress="window.close();">cerrar</a>');
}

var ventana = null;
function memoria_ambiental(aaaa) {
 if (ventana == null || ventana.closed) {
  var ancho = 618, alto = 332;
  var alto_p = screen.height / 2, ancho_p = screen.width / 2;
  var x = ancho_p - (ancho/2), y = alto_p - (alto/2);
  var cadena = "width="+ancho+",height="+alto
  if (document.all) {
   cadena = cadena + ",left="+x+",top="+y; }
  else {
   cadena = cadena + ",screenX="+x+",screenY="+y; }
   ventana = window.open("/encuestas/encuesta_publicaciones.asp?publicacion=Memoria_ambiental_"+aaaa, "ree", "scrollbars=yes,resizable=yes," + cadena); }
 else {
  ventana.focus();
 }
}

function popup(url, name, width, height, x, y) {
	var settings = "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width="+width+",height="+height;
	settings = settings+",left=" + x + ",top=" + y
	popupWindow = window.open(url,name,settings);
	popupWindow.opener = self;
	popupWindow.focus();
}