A history acquisition unit acquires a history of operations with a web browser by a user and stores the history in a storage device. A search unit accesses the storage device to search a history of a first operation for inputting a parameter and a history of a second operation performed after the first operation. A generation unit generates a service program that provides services that the user has received through the operations with the web browser, and stores it in the storage device. The service program makes a computer function as: an input acceptance unit that accepts input of a new parameter instead of the parameter input through the first operation; and a processing unit that performs, in response to the new parameter, inputting the new parameter in the web page and processing associated with the second operation beforehand in this stated order with respect to the web browser.