A time marker based on extensible mark-up language (XML) for a synchronized multimedia presentation. The time marker defines up to plural text-based elements that, in turn, define entry points other than the beginning of a multimedia presentation and from which the multimedia presentation may be commenced. In connection with a browser-based display of a synchronized multimedia presentation, the browser displays a navigation bar labelled with the text-based elements. Upon user-selection of a text-based element from the navigation bar, the multimedia presentation is re-started commencing at a point corresponding to the navigation entry point.