FYI your page is totally unviewable under OPENSTEP/Omniweb 3.1/rc2 (completely green page).
Normally Omniweb does quite well on current pages (except for Javascript). I cannot confirm/disconfirm behaviour on IE/Netscape, however.
Maybe it's not worth supporting OPENSTEP any longer, since it is ailing nowadays. I, personally, would appreciate such support.