A computer-implemented system and method for navigation on a communication network to robustly locate, retrieve and display information. In response to one or a few user inputs, a hyperlink in a referring document provides efficient and robust access to original resources and also to alternative resources for originally intended content. Intended content may comprise the whole of or only parts of document resources, which may be affected by linkrot or content modification. Links are checked to determine if they cannot be followed or if they can be followed but originally intended content is missing or altered. Then, in response to zero or a few additional user inputs, intended content is accessed from alternative resources including archival resources and non-archival live resources.