function goLogin() {
  // window.alert('Se presiono ENTER');
  var connect, form, response, result, user, pass, session;

  user = __('user_login').value;
  pass = __('pass_login').value;
  session = __('session_login').checked ? true : false;

  form = 'user' + user + '&pass=' + pass + '&session=' + session;
  connect = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject('Microsoft.XMLHTTP');

  connect.onreadystatechange = function(){
    if (connect.readyState == 4 && connect.status == 200) {
      if (connect.responseText == 1) {
        result ='<div class="alert alert-dismissible alert-success">Igual a 1</div>';
        result = '<div class="alert alert-dismissible alert-success">';
        result += '<h4>Conectado</h4>';
        result += '<p><strong>Estamos Redireccionandote...</strong></p>';
        result += '</div>';
        __('_AJAX_LOGIN_').innerHTML = result;
        location.reload();
      }else{
        // result = 'hola';
        // __('_AJAX_LOGIN_').innerHTML = connect.responseText;
        result ='<div class="alert alert-dismissible alert-success">Igual a 1</div>';
        result = '<div class="alert alert-dismissible alert-success">';
        result += '<h4>Conectado</h4>';
        result += '<p><strong>Estamos ...</strong></p>';
        result += '</div>';
        __('_AJAX_LOGIN_').innerHTML = result;
      }
    }else if (connect.readyState != 4){
      result = '<div class="alert alert-dismissible alert-warning">';
      result += '<button type="button" class="close" data-dismiss="alert">X</button>';
      result += '<h4>Procesando...</h4>';
      result += '<p><strong>Estamos intentando Logearte...</strong></p>';
      result += '</div>';
      __('_AJAX_LOGIN_').innerHTML = result;

    }
  }
  connect.open('POST','ajax.php?mode=login',true);
  connect.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
  connect.send(form);
}//FIn de goLogin