function  valida_contactar_ca () {
  with (document.getElementById('contactar')) {
    result0 = esta_ple (nom);
    result1 = esta_ple (cognoms);
    result2 = esta_ple (email);
    result3 = mira_email (email);

    if (result0 == 0) {
      alerta_ct('Nom');
      nom.focus();
      return false;
    }
    else if (result1 == 0) {
      alerta_ct('Cognoms');
      cognoms.focus();
      return false;
    }
    else if (result2 == 0) {
      alerta_ct('Correu electr\u00F2nic');
      email.focus();
      return false;
    }
    else if (result3 == 9) {
      alert('El format del correu electr\u00F2nic no \u00E9s correcte ...');
      email.focus();
      return false;
    }
    else return true;
  }
}

function  valida_contactar_es () {
  with (document.getElementById('contactar')) {
    result0 = esta_ple (nom);
    result1 = esta_ple (cognoms);
    result2 = esta_ple (email);
    result3 = mira_email (email);

    if (result0 == 0) {
      alerta_es('Nombre');
      nom.focus();
      return false;
    }
    else if (result1 == 0) {
      alerta_es('Apellidos');
      cognoms.focus();
      return false;
    }
    else if (result2 == 0) {
      alerta_es('Correo electr\u00F3nico');
      email.focus();
      return false;
    }
    else if (result3 == 9) {
      alert('El formato del correo electr\u00F3nico no es correcto ...');
      email.focus();
      return false;
    }
    else return true;
  }
}

function  valida_contactar_en() {
  with (document.getElementById('contactar')) {
    result0 = esta_ple (nom);
    result1 = esta_ple (cognoms);
    result2 = esta_ple (email);
    result3 = mira_email (email);

    if (result0 == 0) {
      alerta_en('Name');
      nom.focus();
      return false;
    }
    else if (result1 == 0) {
      alerta_en('Surname');
      cognoms.focus();
      return false;
    }
    else if (result2 == 0) {
      alerta_en('E-mail');
      email.focus();
      return false;
    }
    else if (result3 ==9) {
      alert('Please, check email value ...');
      email.focus();
      return false;
    }
    else return true;
  }
}