Make the enter key work with Drupal login

gistfile1.js

Drupal.behaviors.loginAJAXSubmit = {
  attach: function (context, settings) {
    var ajax = Drupal.ajax[$('#tab-login .form-submit').attr('id')];
    if(typeof ajax != 'undefined'){
      $('input',ajax.element_settings.element.parentElement.parentElement).bind("keypress", function (e) {
          var code = (e.keyCode ? e.keyCode : e.which);
          if(code == 13) { //Enter keycode
            $(ajax.element_settings.element).trigger(ajax.element_settings.event);
          }
      });
    }
  }
};