LayoutTests/fast/js/window-properties.html identifies dom discrepancies between Safari & FireFox I've attached the outputs from various browsers. Ignore the "FIREFOX HACK" line, it was needed due to a bug in firefox causing the test to print nothing.
Created attachment 10616 [details] Safari's output (TOT)
Created attachment 10617 [details] FireFox's output (1.5.1)
Created attachment 10618 [details] output from diff -u safari.txt firefox.txt
Created attachment 10620 [details] Firefox's output (1.5.1)
Created attachment 10621 [details] output from diff -u safari.txt firefox.txt
P5 is not used for WebKit bugs. [http://webkit.org/quality/bugpriorities.html]