show receipt type icon on checkout

To whom it may concern,
Is it possible to view the receipt type icon on checkout?
may be there is another way but adding a css class may help.
file: ec_receipt.checkout.inc
line: 75

  $form['ec_receipt']['ec_receipt_name'] = array(
    '#value' => ec_receipt_checkout_types(ec_receipt_get_types('type', $txn->payment_method)),
    '#weight' => -8,
    '#prefix' => '<div class="rtype-'. $txn->payment_method .'">',
    '#sufffix' => '</div>',
  );

thanx