**
 * Implements hook_form_FORM_ID_alter() for user_register_form().
 */
function username_generator_form_user_register_form_alter(&$form, &$form_state, $form_id) {
  $form['account']['#type'] = 'fieldset';
    $form['account']['name']['#suffix'] = '</div>';
  }

 drupal_add_js('function random_area_wrapper(name) { jQuery("#random-area-wrapper").html(name).slideDown(); }', 'inline');


  $form['Personal Information']['profile_date']['#default_value'] =  array(
    'day' => date('j'),
    'month' => date('n'),
    'year' => date('Y')
  );
  $form['Personal Information']['profile_date']['#after_build'] = array('__set_year_range');

  if (!user_access('administer users')) {
    $form['Personal Information']['profile_date']['#element_validate'] = array('age_validate');
  }
}

function age_validate($element, &$form_state) {
  $rid = autoassignrole_get_active_path_rid();
  $rid = array_diff($rid, array(0));
  $rid = reset ($rid);

  if (_role_access($rid, 'allow kids registration' ) || empty($rid)) {

  print_r($element);
  print_r($form_state);

[values] => Array
        (
          [profile_date] => Array
                (
                    [day] => 31
                    [month] => 8
                    [year] => 2001
                )
)

[input] => Array
        (

            [profile_date] => Array
                (
                    [day] => 31
                    [month] => 8
                    [year] => 2001
                )

        )

print_r($element);

Array
(
    [#default_value] => Array
        (
            [day] => 31
            [month] => 8
            [year] => 2017
        )

    [#after_build] => Array
        (
            [0] => __set_year_range
        )

    [#element_validate] => Array
        (
            [0] => age_validate
        )

    [#tree] =>
    [#parents] => Array
        (
            [0] => profile_date
        )

    [#array_parents] => Array
        (
            [0] => Personal Information
            [1] => profile_date
        )

    [#weight] => 0
    [#processed] =>
    [#required] =>
    [#attributes] => Array
        (
        )

    [#title_display] => before
    [#id] => edit-profile-date--2
    [#sorted] => 1
            [#validated] => 1
        )

    [#after_build_done] => 1
)
Array
(
    [#default_value] => Array
        (
            [day] => 31
            [month] => 8
            [year] => 2017
        )

    [#after_build] => Array
        (
            [0] => __set_year_range
        )

    [#element_validate] => Array
        (
            [0] => age_validate
        )

    [#tree] =>
    [#parents] => Array
        (
            [0] => profile_date
        )

    [#array_parents] => Array
        (
            [0] => Personal Information
            [1] => profile_date
        )

    [#weight] => 0
    [#processed] =>
    [#required] =>
    [#attributes] => Array
        (
        )

    [#title_display] => before
    [#id] => edit-profile-date--2
    [#sorted] => 1

            [#validated] => 1
        )

    [#after_build_done] => 1
)