How to turn off preview mode

if you want to leave preview on but wish to retain your framebreaker add this to your header.php

<!– frame buster –>
<?
$preview = $_REQUEST[‘preview’];
if ($preview == “”) {
$preview = “false”;
}
?>
<script type=”text/javascript”>
var preview = <?php echo $preview; ?>;
if (preview != true && self != top)
{
top.location.href = document.location.href;
}
</script>
<!– end frame buster –>

That didn’t work. It wasn’t breaking frames anymore. Do I need to add something to those lines of code in your post to get it to work lencrockett?