While a server (110) that executes a first web application program that accomplishes a web application that provides a service over the Internet so as to provide the service is not connected to a client (100) that receives the service, the client (100) executes a second web application program that accomplishes a web application, records a procedure in which the client (100) has executed the second application program, and transmits the recorded procedure to the server (110) just after the client (100) and the server (110) are connected and then the server (110) executes the first web application based on the procedure transmitted from the client (100).