See the demo site

donation

template

title definition (##title##)

title

title-tag

title-style

accompanying text definition (##text##)

text

text-tag

text-style

button definition (##button##)

button

button-style

definition of amount and currency (##amount## & ##currency##)

amount

currency-code

currency-list

amount-style

currency-style

Data transmitted and used by the Paypal site

item-name

image-url

url-valid

url-cancel

use-sandbox Yes No

style and secondary options

id

class

style

css-head