The trick is very easy, How to Donate via Credit Card and PayPal
If you choose a donation payment using PayPal or Credit Card, your total donation value will be converted into Dollar (USD);
We will reply to your e-mail containing links to donation via PayPal.com web. All your transactions will be done by PayPal so that security is guaranteed. Transactions using PayPal and Credit Card incur 3-4% surcharge from the value of your donation.