drupal/core/modules/openid/openid.js

(function ($) {

Drupal.behaviors.openid = {
  attach: function (context) {
    var $context = $(context);
    var loginElements = $('.form-item-name, .form-item-pass, li.openid-link');
    var openidElements = $('.form-item-openid-identifier, li.user-link');
    var cookie = $.cookie('Drupal.visitor.openid_identifier');

    // This behavior attaches by ID, so is only valid once on a page.
    if (cookie || location.hash == '#openid-login') {
      $edit_openid_identifier = $('#edit-openid-identifier');
      if (cookie) {
        $edit_openid_identifier.val(cookie);
      }
      $edit_openid_identifier.once('openid', function() {
        loginElements.hide();
        // Use .css('display', 'block') instead of .show() to be Konqueror friendly.
        openidElements.css('display', 'block');
      });
    }


    $context.find('li.openid-link')
      .once('openid')
      .click(function () {
        loginElements.hide();
        openidElements.css('display', 'block');
        // Remove possible error message.
        $('#edit-name, #edit-pass').removeClass('error');
        $('div.messages.error').hide();
        // Set focus on OpenID Identifier field.
        $('#edit-openid-identifier')[0].focus();
        return false;
      });
    $context.find('li.user-link')
      .once('openid')
      .click(function () {
        openidElements.hide();
        loginElements.css('display', 'block');
        // Clear OpenID Identifier field and remove possible error message.
        $('#edit-openid-identifier').val('').removeClass('error');
        $('div.messages.error').css('display', 'block');
        // Set focus on username field.
        $('#edit-name')[0].focus();
        return false;
      });
  }
};

})(jQuery);