var ventanaNueva=0;
function abrirVentana(URLStr, sc, left, top, width, height)
{
  if(ventanaNueva)
  {
    if(!ventanaNueva.closed) ventanaNueva.close();
  }
  ventanaNueva = open(URLStr, 'ventanaNueva', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars='+sc+',resizable=no,copyhistory=yes,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
}


var ampliacion=0;
function abreGeneral(URLStr,sc, res, w,h, der, arr)
{
  if(ampliacion)
  {
    if(!ampliacion.closed) ampliacion.close();
  }
  ampliacion = open(URLStr, 'ampliacion', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=' + sc + ',resizable=' + res + ',copyhistory=no,width=' + w + ',height=' + h + ',left=' + der + ', top=' + arr + ',screenX=' + der +',screenY=' + arr + '');
}