Mimicing this style of payment system

[shuttleexcellen]

Hey everyone,

Just wondering if anyone can help me by explaining which service of paypals is being utilised here

http://www.airshuttle.biz/payment.html

I run a similar business and would like to have a link on my site where people can click like on this one (the paypal picture links to paypal) and then the customer just enters the amount and pays with their card

Any help is greatly apperciated

cheers

Miro