Different Header based on landing page...one database

[forced]

You are the man! Can we give hugs on this board?

Seems to be working like a champ.

I used the following code to create the variable for the image:

if ($_SESSION['referral_code'] != '') {
    $MY_HEADER_LOGO_IMAGE = $_SESSION['referral_code'];
        } else {
        $MY_HEADER_LOGO_IMAGE = 'header'; 
        } 

I used the following code for the header image:

echo '<a href="' . HTTP_SERVER . DIR_WS_CATALOG . '">' . '<img src="https://www4027.ssldomain.com/energetixjewelry/shop/includes/templates/energetix/images/' . $MY_HEADER_LOGO_IMAGE. '.gif"' . '</a>'; 

Is there more of a zen way, other than putting the full image URL?