wp e-commerce multi image for 3.8+

<?php
/*Call the Extra Thumbails */

function makethumburl($url, $delete = false){
    //This function has 2 uses: 1. to rejig the image url to call the thumbnail sized version of the image. 2. The remove the file extension so the image can be compared to the thumbail already called.
    $exts = array('.jpg','.jpeg','.png','.gif');

    foreach($exts as $ext){
    if(strpos($url,$ext)){
        $theext = $ext;
        }
    }
    if ($delete == true ) {$replacer = '';} else {$replacer = '-38x38' . $theext;}

    return substr_replace($url, $replacer, (strlen($theext)*-1), strlen($theext));
}

$i=1;
//We now query the database directly to obtain the attached images.
$query = 'SELECT *
FROM `wp_posts`
WHERE `post_parent` = "' . wpsc_the_product_id() .'"
AND `post_type` = "attachment"';

$result = mysql_query($query);
while($row = mysql_fetch_array($result)){

$image_url = $row['guid'];

if ( strpos(wpsc_the_product_image(), makethumburl($image_url, true)) === false ) //Checks if the image has already been called earlier as product thumbnail.
        {
        ?>
        <a href="<?php echo $image_url; ?>" rel="lightbox[<?php echo wpsc_the_product_id(); ?>]">
        <img src="<?php echo makethumburl($image_url); ?>" width="36px" height="36px" alt="<?php echo wpsc_the_product_title() . ' ' . $i; ?>"/>
        </a>
        <?php
        $i++;
        }
}
/*END - Call the Extra Thumbails */
?>