Facebook login error

<?php
require_once 'inc/facebook.php';
$facebook = new Facebook(array(
  'appId' => 'xxxxxxxxxxxxxx',
  'secret' => 'xxxxxxxxxxx',
  'cookie' => true,
)); 
try {
  $me = $facebook->api('/me');
} catch (FacebookApiException $e) {
  error_log($e);
}

if ($facebook->getUser()) { ?>
<form action='signup.php' method='post'>
<fieldset class='field_name'>
<label>First Name</label>
<input class='name' name='first_name' type='text' value='<? if ($facebook->getUser())
 {echo $me['first_name'];}else{echo'First Name';} ?>' />
</fieldset>
<fieldset class='field_name'>
<label>Last Name</label>
<input class='name' name='last_name' type='text' value='<? if ($facebook->getUser())
 {echo $me['last_name'];}else{echo'Last Name';} ?>' />
</fieldset>
<fieldset>
<label>Email Address</label>
<input name='email' type='text' value='<? if ($facebook->getUser()) 
{echo $me['email'];}else{echo'email address';} ?>' />
</fieldset>
<fieldset>
<input name='submit' type='submit' value='submit' />
</fieldset>
</form>
<? } else {
  ?>
<fb:login-button data-perms='email, user_checkins'>Login</fb:login-button> 
<div id='fb-root'></div>
      <script src='http://connect.facebook.net/en_US/all.js'></script>
      <script>
         FB.init({ 
            appId:'xxxxxxxxxxxxxxx', cookie:true, 
            status:true, xfbml:true 
         });
         FB.Event.subscribe('auth.login', function(response) {
        window.location.reload();
      });
      </script>
 <? }
?>

<?php
session_start();
include:'connect.php';


$first_name = $_POST['first_name']; 
$last_name = $_POST['last_name']; 
$email = $_POST ['email']; 
$query = mysql_query('INSERT INTO Facebook (first_name, last_name, email) VALUES 
('$first_name','$last_name','$email')') or die(mysql_error());

if($query){
header('location: Website.php');
}else {
echo 'fejl';    
}
?>