* Upgrade your browser
* Only 1% of users have Netscape, and I’m not designing for 1% (apparently no one uses an OS other than Windows, either)
* The site validates with W3C (really?)
* The information you’re looking for is there, you just didn’t find it (and no, there’s nothing wrong with the navigation?)
Universal design (trying to please all of the browsers, all of the time) is impossible. However, the principle is to “downgrade gracefully” — i.e. while not everyone will be able to see the artistic brilliance of your site, no-one should have a bad experience either.
The Colorado Swimming website has some other usability problems, by the way. For example, the use of pull-down menus.
See what usability guru Carolyn Snyder has to say about those: http://www-106.ibm.com/developerworks/library/us-tricks/?dwzone=usability
Great reference – thanks! It’s easy to get so caught up in standards that you forget how very basic some of these issues are (like “don’t open new windows”).