I have implemented PayPal for my site, and i used IPN checkout. Currently when I press PayNow button on my site it shows PayPal Checkout page with following design http://c2n.me/iM28i8
But there is another PayPal Checkout page design (see http://c2n.me/iMwGZk), than the one I use. How can i switch to that design?
The second screen shot is new layout design that will be offered going forward . Currently it is not rolled out everywhere , so your buyers can see the different checkout page depending on the various factors like their country , ip adrees etc . This is only the change in design and will not affect the way PayPal process the transaction .
And there is no way to control the checkout design , it will be decided by the PayPal .
The second screenshot looks a lot like the payment page paypal has for mobile devices. are you sure that's not the mobile one?