// Check if refid is set
if ((!empty($_GET['user'])) && ($CLICK == 1) && ($_SERVER['PHP_SELF'] == "click.php")) {
// The variable user comes from the click-counter script click.php and we only accept this here
$GLOBALS['refid'] = bigintval($_GET['user']);
// Check if refid is set
if ((!empty($_GET['user'])) && ($CLICK == 1) && ($_SERVER['PHP_SELF'] == "click.php")) {
// The variable user comes from the click-counter script click.php and we only accept this here
$GLOBALS['refid'] = bigintval($_GET['user']);