Abstract: A composite Web page is made up of a plurality of subpages. It allows a user to input data to a Web server in one subpage while interactively displaying a response from the server of the input on another subpage. When an input is made, an URL is also sent to the server to run a program that updates a database and generates a response. The program also generates a composite Web page incorporating the response in one of the subpages. Each subpage is formed with the use of subtemplates which may contain partially formed text and hypertext markup elements as well as program tags for the server to interpret and execute subprograms upon them. Each subprogram typically produces an output that is written to the tag location in hypertext markup language format. In another embodiment, the subtemplates and the program are sent to the client to construct the interactive Web page there.