function controlaenter() {
    if ( document.forms.formulario_login.user.value!="" 
     && document.forms.formulario_login.pass.value!="" ) {
      if ( event.keyCode==13 ) {
        document.formulario_login.submit();
        return false;
      }
      return true;
    } else {
      return false;
    }
  }

  function controlaenter2(cual,formulario) {
    if ( event.keyCode==13 ) {
      if ( cual==1 ) {
        clickpalabra( formulario );
        return false;
      } else if ( cual==2 ) {
        clickfecha( formulario );
        return false;
      } else {
        return true;
      }
    }
    return true;
  }


  function clickpalabra( num ) {
    if ( document.forms['form'+num].cadena.value!="" ) {
      document.forms['form'+num].buscacadena.value="Buscar";
      document.forms['form'+num].buscafecha.value="";
      document.forms['form'+num].submit();
    }
  }
  function clickfecha( num ) {
    if ( document.forms['form'+num].dia.selectedIndex>0
      && document.forms['form'+num].mes.selectedIndex>0
      && document.forms['form'+num].anio.selectedIndex>0 ) {
      document.forms['form'+num].buscacadena.value="";
      document.forms['form'+num].buscafecha.value="Buscar";
      document.forms['form'+num].submit();
    }
  }



  function abrir(numero) {
    var man=window.open("descargar.php?numero="+numero+"" , "" , "width=620, height=650, location=no, menubar=no, status=no, toolbar=no, scrollbars=no, resizable=no");
  }














function recuperalogin() {
  var quelogin = GetCookie('quelogin');
  var queclave = GetCookie('queclave');
  var quecliki = GetCookie('cliki');
  if (quelogin == '') {
    //document.formulario_login.recuerda.checked = false;
    document.forms.formulario_login.user.value = '';
    document.forms.formulario_login.pass.value = '';
  } else {
    //document.formulario_login.recuerda.checked = true;
    document.forms.formulario_login.user.value = quelogin;
    document.forms.formulario_login.pass.value = queclave;
  };
};

function guardalogin() {
 if (document.formulario_login.recuerda.checked) {
   if ( document.formulario_login.user.value!='' && document.formulario_login.pass.value!='' ) {
     document.cookie = 'quelogin=' +
                       document.formulario_login.user.value +
                       '; expires=Tue, 31-Dec-2022 00:00:00 GMT';
     document.cookie = 'queclave=' +
                       document.formulario_login.pass.value +
                       '; expires=Tue, 31-Dec-2022 00:00:00 GMT';
   }
 } else {
   document.cookie = 'quelogin=';
   document.cookie = 'queclave=';
 };
};
function GetCookie( name ) {
  var allcookies = unescape(document.cookie);
  var pos = allcookies.indexOf(name+"=", start);
  if (pos != -1) {
    var start = pos + name.length + 1
    var end   = allcookies.indexOf(";", start)
    if (end == -1) {
      end = allcookies.length;
    };
    return unescape(allcookies.substring(start, end));
  } else {
    return "";
  };
};