Solution for changing a donation page so that it accepts cash or checks only -- no credit cards. Note that the payment type is stored in donation,Batch_Code and the check number is stored in donation.Notes.

donation_cash_check_only.html

<script type="text/javascript">
    // Solution for changing a donation page so that it accepts cash or checks only -- no credit cards.
    // Note that the payment type is stored in donation,Batch_Code and the check number is stored in
    // donation.Notes.
    document.addEventListener('DOMContentLoaded', function() {
        document.querySelector('#credit_card_information').style.display = 'none';
        document.querySelector('#cc_number').value = '1111111111111111';
        document.querySelector('#ccExpMonth').value = '12';
        document.querySelector('#ccExpYear').value = '27';
        document.querySelector('#CVV2').value = '1111';
        document.querySelector('#one_time').click();
        document.querySelector('#recurring').parentNode.style.display = 'none';
        document.querySelector('#one_time').parentNode.style.display = 'none';
        document.querySelector('#form-of-payment-cash').addEventListener('click', formOfPaymentListener);
        document.querySelector('#form-of-payment-check').addEventListener('click', formOfPaymentListener);

        function formOfPaymentListener(event) {
            var cashPayment = document.querySelector('#form-of-payment-cash');
            var checkPayment = document.querySelector('#form-of-payment-check');
            var checkNumberRow = document.querySelector('#check-number-row');
            if (cashPayment.checked) {
                cashPayment.value = cashPayment.getAttribute('x-value');
                checkPayment.value = '';
                checkNumberRow.style.display = 'none';
            } else {
                checkPayment.value = checkPayment.getAttribute('x-value');
                cashPayment.value = '';
                checkNumberRow.style.display = 'block';
            }
        }
        formOfPaymentListener();
    });
</script>

<fieldset id="form-of-payment">
<legend>Form of Payment?</legend>
<div class="formRow">
    <input id="form-of-payment-cash" type="radio" name="Batch_Code" x-value="Cash" value="Cash" checked/>
    <label for="form-of-payment-cash">Cash</label>
</div>
<div class="formRow">
    <input id="form-of-payment-check" type="radio" name="Batch_Code" X-value="Check" value="" />
    <label for="form-of-payment-check">Check</label>
<div style="display: none;" id="check-number-row" class="formRow">
    <label for="form-of-payment-check-number">Check Number</label>
    <input id="form-of-payment-check-number" type="text" maxlength="5" name="Notes" />
</div>
</div>
</fieldset>