A computer network (20) includes a first processor (22) for maintaining a Web page (34) having an embedded first code module (36) and accessible through a Web address (38). A second processor (24) supports a Web browser (52) for downloading the Web page (34) and executing the first code module (36). When executed, the first code module (36) issues a first command (93) to retrieve a second code module (90) from a server system (26). The server system (26) includes a database (68) having a service response (162, 176, 186) associated with the Web address (38). A processor (62) assembles the second code module (90) having the service response (162, 176, 186). When the second code module is retrieved, the first code module (36) issues a second command (106) to initiate execution of the second code module (90) to provide added function to the Web page (34).