Code for the Donation button
<form action="https://www.paypal.com/cgi-bin/webscr" method="post" target="_top">
    <input type="hidden" name="cmd" value="_s-xclick">
    <input type="hidden" name="hosted_button_id" value="EZK8Y6X9YTHXU">
    <input type="image" src="assets/img/payment2.png" name="submit" alt="CAcert Donation through PayPal">
</form>