How can I add to my web page corners, among others the print button such as the following form has: http://www.nintendo.fi/files/pdf/wii_u_huoltolahete_v2.pdf
The form you point to was created using Adobe LiveCycle Designer. This is an Enterprise level document and form platform. For more information on Adobe LiveCycle see http://www.adobe.com/products/livecycle.html.
At this time pdf files created in Adobe LiveCycle Designer are incompatible with FormsCentral. This issue is currently being addressed and should be resolved in the comming weeks.
Thank you very much for your response!