How can we integrate Paypal payment process in my own site without redirect to Paypal Site. Actually my need is when i click on payment button then it shows deducted amount in my site. Means on payment button it checks credit card credentials automatically(i dont want to redirect this to Paypal site) & show deduct money. I know for this i have to integrate paypal API but i dont know the exact process. Anyone who have done such kind of work before Kindly share me your valuable information.