To view QuickTime animations directly within a Netscape or Internet Explorer browser window, download the QuickTime Plug-in 1.1 for Macintosh, Windows 3.1, or Windows95/NT; OS/2 users can use the QuickFlick plug-in for Netscape Navigator.
UNIX users can spawn the external viewer XAnim (select the "QuickTime Animation" link above) or view the corresponding Java applet.