If you are using OmniWeb, this should be red, but in other browsers it should be blue. (media="Screen")

This should be green in any CSS-supporting browser on a color screen. (media="screen")

If you are using OmniWeb 4.1x or 4.2, this should be red, but in other browsers it should be blue. In Netscape 4 it is the default color (media="All")

This should be green in any CSS-supporting browser on a color screen. In Netscape 4 it is the default color (media="all")

This CSS-hiding technique hides stylesheets from OmniWeb 4.1 and 4.2 only. It has been verified that the following browsers can see all four stylesheets and thus show [blue, green, blue, green] rather than [red, green, red, green]:

Internet Explorer:
4.0/Mac, 4.01/Windows, 4.5/Mac, 5.0/Mac, 5.0/Windows, 5.1x/Mac, 5.2x/Mac, 5.5/Windows, 6.0/Windows
Netscape 4:
4.08/Windows, 4.7/Windows, 4.72/Windows, 4.75/Windows, 4.77/Mac, 4.78/Windows
Mozilla-based browsers:
Mozilla 0.9x/Windows, Mozilla 1.01/Windows, Mozilla 1.1/Windows, Mozilla 1.0.1/RedHat 8, Netscape 6.01/Windows, Netscape 6.1/Windows, Netscape 6.2/Windows, Netscape 6.21/Windows, Netscape 6.22/Windows, Netscape 6.23/Windows, Netscape 7.0/Windows, Chimera 0.6/Mac, Galeon 1.2.5/knoppix linux, Phoenix 0.2/Windows
Opera:
5/Mac, 5/MacOSX, 5/Windows, 6beta2/MacOSX, 6/Windows, 6.05/Windows, 6.10/RedHat 8, 7.0beta/Windows
Konqueror:
3.02/knoppix linux, 3.0.3/RedHat 8
Handheld-based browsers:
Web Pro 1.0/Palm Tungsten
Other devices:
WebTV: Viewer 2.0 (emulator on Mac OS9 tested)

Thanks to Owen Briggs, Ton van der Liet, Paul Hammond, Marshall Roch and Matthew Sparby for testing non-Mac browsers.

Comments, questions and browser reports should be sent to codebitch@macedition.com.