Abstract: A multi-level multiplexor system enables a networked browser client to access content information over a networked computer system, such as the Internet. The multi-level multiplexor system has at least one program executing on a server operably connected to the networked computer system that receives a service request from the networked browser client. In response, the program packages a reply that is returned to the networked browser client and causes that browser to automatically issue a plurality of service requests to sources of content information on the networked computer system. The packaged reply also causes the browser to present the responses to the plurality of service requests to sources of content information such that each response is selectively displayed as one of a cascaded series of pages of content information within a single window frame in the browser.