Scripts and Programming

<?php
session_start();
if(!isset($_SESSION['referrer'])){
//get the referrer
if ($_SERVER['HTTP_REFERER']){
$referrer = $_SERVER['HTTP_REFERER'];
}else{
$referrer = "http://www.mysite.com";
}
//save it in a session
$_SESSION['referrer'] = $referrer; // store session data
}
?>

i need to make a new page that can recall this session['referrer'] and do a server redirect on it.
How would i do this?

Much thanks if you can help with any suggestions.