Модуль оплаты Интеркасса vm 1.1 - страница 2 - [VM1] Оплата и доставка

<form name="payment" action="https://interkassa.com/lib/payment.php" method="post" 
enctype="application/x-www-form-urlencoded" accept-charset="cp1251">
<input type="hidden" name="ik_shop_id" value="<? echo ik_shop_id ?>">
<input type="hidden" name="ik_payment_amount" value="<?php printf("%.2f", $db->f("order_total"))?>">
<input type="hidden" name="ik_payment_id" value="<?php echo $order_id ?>">
<input type="hidden" name="ik_payment_desc" value="Оплата заказа номер: <?php echo $order_id ?>">
<input type="submit" onclick="return( submit_order( this.form ) );" class="button" name="process" value="Перейти к оплате">
</form>

<input type="hidden" name="ik_payment_amount" value="<?php printf("%.2f", $db->f("order_total"))?>">