It is arranged so that the history of access to a web page that has been returned to can be determined even in a case where a “BACK” button on a browser has been clicked. Owing to a transition from one web page to another in response to clicking of hot text from the one page to the other, the URL of the destination web page is transmitted to a server. As a result, the URL of the source web page and the URL of the access destination can be recognized by the server. In a case where one web page is returned to from another web page by pressing the “BACK” button on a browser, a URL is not transmitted to the server. Therefore, a URL combination in which the source URL and the access destination URL have been interchanged is generated and stored in an access history table. Thus, even if the preceding web page is restored by pressing the “BACK” button, the server is capable of ascertaining history of the access.