Facebook Callback

Hey guys i have a big problem with my site that when other click on a Like Button it will not remove from the site, still stays here. can anyone please help me..

here are the codes.

facebook.php

<?
  $site2 = mysql_query("SELECT * FROM `facebook` WHERE (`active` = '0' AND `points` > '4') AND `id` NOT IN (SELECT `site_id` FROM `liked` WHERE `user_id`='{$data->id}') ORDER BY `cpc` DESC LIMIT 0, 15");
  $ext = mysql_num_rows($site2);
if($ext > 0){
?><div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
 FB.init({status: true, cookie: true, xfbml: true});
 var user= "<? echo $data->id;?>";
 document.getElementById("Hint").style.display='block';
 FB.Event.subscribe('edge.create', function(response) {
    $.ajax({
        type: "POST",
        url: "fbreceive.php",
        data: "data="+response + "---" + user,        
        cache: false
    });
    $("#Hint").html('<font size="3"><b>Punkty dodane prawidłowo!</b></font>');
    removeElement('tbl', response);
 });
};
(function() {
 var e = document.createElement('script');
 e.type = 'text/javascript';
 e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js';
 e.async = true;
 document.getElementById('fb-root').appendChild(e);
 }());

function removeElement(parentDiv, childDiv){
     if (document.getElementById(childDiv)) {     
          var child = document.getElementById(childDiv);
          var parent = document.getElementById(parentDiv);
          parent.removeChild(child);
     }
}
  function refreshpage()
   {
      window.location.reload();
   }
</script>
<center><div id="Hint" style="display:none;"></div></center>
<div id="tbl">
<?
  for($j=1; $site = mysql_fetch_object($site2); $j++)
{
?>    

PHP:

fbreceive.php

<?include('config.php');if(isset($_POST['data'])){$x = explode('---', $_POST['data']);$site = mysql_fetch_object(mysql_query("SELECT * FROM `facebook` WHERE `facebook`='{$x[0]}'"));mysql_query("UPDATE `users` SET `coins`=`coins`+'{$site->cpc}' WHERE `id`='{$x[1]}'");mysql_query("UPDATE `facebook` SET `likes`=`likes`+'1', `points`=`points`-'{$site->cpc}' WHERE `facebook`='{$x[0]}'");mysql_query("INSERT INTO `liked` (user_id, site_id) VALUES('{$x[1]}','{$site->id}')");}?>

PHP:

I really need help