i have some custom shipping methods which is made by different extensions like webshopapps matrixrate and etc... . i want to add an icon (.png file) to each carrier.
i know that shipment methods names are shown in frontend by this code:
<?php foreach ($_shippingRateGroups as $code => $_rates): ?> <dt><?php echo $this->getCarrierName($code) ?></dt>
how to change this code to show some .png file for each method?