Hmm das Theme arbeitet mit TimThumb.
Hier mal ein kleiner Auszug - vlt kannst damit was anfangen:
<?php
/**
* TimThumb script created by Ben Gillbanks, originally created by Tim McDaniels and Darren Hoyt
* http://code.google.com/p/timthumb/
*
* GNU General Public License, version 2
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
*
* Examples and documentation available on the project homepage
* http://www.binarymoon.co.uk/projects/timthumb/
*/
define ('CACHE_SIZE', 1000); // number of files to store before clearing cache
define ('CACHE_CLEAR', 20); // maximum number of files to delete on each cache clear
define ('CACHE_USE', TRUE); // use the cache files? (mostly for testing)
define ('CACHE_MAX_AGE', 864000); // time to cache in the browser
define ('VERSION', '1.28'); // version number (to force a cache refresh)
define ('DIRECTORY_CACHE', './cache'); // cache directory
define ('MAX_WIDTH', 500); // maximum image width
define ('MAX_HEIGHT', 500); // maximum image height
define ('ALLOW_EXTERNAL', FALSE); // allow external website (override security precaution - not advised!)
define ('MEMORY_LIMIT', '30M'); // set PHP memory limit
define ('MAX_FILE_SIZE', 1500000); // file size limit to prevent possible DOS attacks (roughly 1.5 megabytes)
define ('CURL_TIMEOUT', 10); // timeout duration. Tweak as you require (lower = better)
// external domains that are allowed to be displayed on your website
$allowedSites = array (
'flickr.com',
'picasa.com',
'blogger.com',
'wordpress.com',
'img.youtube.com',
'upload.wikimedia.org',
);
// STOP MODIFYING HERE!
// --------------------