Drupal : Login / register with Facebook connect button

<?php

/**
* @filesource
*
* Different customization & enhancements to existing features for Channel portal
*
* @param $form
* @param $form_state
* @param $form_id
* DrupalD
*/

/**
* Implementation of hook_form_alter
*
* @param $form
* @param $form_state
* @param $form_id
* DrupalD
*/
function channel_utils_form_alter(&$form, &$form_state, $form_id) {
$user_profile = fbconnect_user_profile();
$op = $user_profile ? 'login' : 'register';
switch ($form_id) {
case 'user_register_form':
case 'user_login':
drupal_add_css(drupal_get_path('module', 'channel_utils') .'/fbappear.css');
$attr = array();
if (variable_get('fbconnect_fast_reg', 0) && variable_get('fbconnect_reg_options', 0)) {
$attr = array('perms' => 'email');
}
$ss__facebook_connect = fbconnect_render_button($attr);
$form['login_text'] = array(
'#markup' => 'Log in instantly with Facebook',
'#weight' => -50,
);
$form['fbconnect_button'] = array(
'#type' => 'item',
'#prefix' => '',
'#title' => t('Facebook login'),
'#markup' => $ss__facebook_connect,
'#weight' => -49,
);

$form['points_text'] = array(
'#markup' => '

',
'#prefix' => '

',
'#suffix' => '

',
'#weight' => -48,

);

$form['fb_divider'] = array(
'#type' => 'item',
'#prefix' => '',
'#markup' => ' ',
'#suffix' => '',
'#weight' => -47,
);

$form['or'] = array(
'#type' => 'item',
'#prefix' => '',
'#markup' => ''. t('OR') .'',
'#suffix' => '',
'#weight' => -46,
);

$form['name']['#size'] = 40;
$form['pass']['#size'] = 40;

break;
}
}