To actualize the mechanism for commercial advertisement that conventional mass media have cultivated on internet and to inquire more homepages for more people by recording and managing subhomepages on a server and opening a subhomepage together with a homepage requested to be browsed at the time of homepage inquiry.

A homepage provider 1 connects to sites 3 and 4 through the Internet 2 to register a homepage on servers of the sites 3 and 4. When the homepage is provided from the homepage provider 1, subhomepages are added to the homepage automatically at the sites 3 and 4. The main site 3 controls a connection with the homepage provider 1 or a general member 5 and provides the subhomepage while providing the homepage for the general member 5. Therefore, when the general member 5 browses the homepage, the subhome is added unconditionally.