1. A method for processing documents in a network environment in a customized fashion using a browser, the method comprising the steps of: receiving, by a redirector from the browser, at least one request to store custom information associated with a selected network document; storing the associated custom information in the redirector; receiving, by the redirector from the browser, a request for the selected network document; redirecting at least a portion of the request for the selected network document to a network server hosting the selected document, thereby retrieving the selected document; retrieving the custom information; modifying the selected document, by the redirector, so as to replace each original network address within the selected document by a corresponding new network address pointing to the redirector; and transmitting, by the redirector to the browser, the selected network document and a custom response derived using the custom information.