dibawah if (user_is_authenticated()) {
dan sebelum if ($_GET['status'])
masukkan
----
require 'fblib/facebook.php';
require 'fblib/fbconfig.php';

$user = $facebook->getUser();
if ($user)
{
$logoutUrl = $facebook->getLogoutUrl();
try
{
$userdata = $facebook->api('/me');
}
catch (FacebookApiException $e) {
error_log($e);
$user = null;
}
$_SESSION['facebook']=$_SESSION;
$_SESSION['userdata'] = $userdata;
$_SESSION['logout'] = $logoutUrl;
//Redirecting to home.php
$fbc="<input type='checkbox' name='fb' value='1'> Post to FB";
}
else
{
$loginUrl = $facebook->getLoginUrl(array(
 'scope' => 'email,user_birthday,publish_stream',
 'display' => 'touch'
));
$fbc="<a href='http://domainmu.com/fb'> Login with Facebook</a>";
}
}