References:
DOM 1 Core, 2nd edition, Node IDL
DOM 2 Core, Node IDL
Firefox 2.0.0.9, Firefox 3.0.7, Opera 9.50, Safari 3.0.4, Konqueror 3.5.8, Seamonkey 1.x, Seamonkey 2.x, NS 7.2, K-meleon 1.x, Galeon 2.0.4, Epiphany 2.22 all pass this test.
This bug has been reported at connect's IE beta feedback as bug 339307. This bug has been closed by the IE team and will not be fixed for the release of IE 8 final.