//echo $_SERVER[HTTP_REFERER];
//echo $_SERVER[HTTP_VIA];
//print_r($_SERVER);
if ( (strpos($_SERVER[HTTP_REFERER], "facebook") == true) and (strpos($_SERVER[HTTP_REFERER], "www.facebook") == false) ) {
echo "
";
the_post_thumbnail();
echo "
Facebook bélyegkép
";
}
?>