<form action="https://secure.nationalprocessinggateway.com/cart/cart.php" method="POST">
<input type="text" size="6" name="amount" />
<input type="hidden" name="key_id" value="14064060" />
<input type="hidden" name="action" value="process_variable" />
<input type="hidden" name="order_description" value="Amount Due" />
<input type="hidden" name="language" value="en" />
<input type="hidden" name="customer_receipt" value="true" />
<input type="hidden" name="hash" value="action|order_description|33d3abf84f57532db80e869d788edcc2" />
<input type="submit" name="submit" value="Donate" />
</form>