Puedes fijarte en el código fuente de ésta página:
http://www.imaputz.com/cssStuff/bigFourVersion.html
Al parecer funciona en bastantes navegadores:
* Opera 7.x + (All Platforms) :: Tested with 7.2x and 7.5x
* Mozilla 1.x + (All Platforms) :: Tested with 1.0x and 1.6x
* IE 6.x + (Windows) :: Tested with 6.0x
* Safari 1.x + (MacOS) :: Tested with 1.2x
* Konqueror 3.x + (Linux / BSD) :: Tested with 3.2x