I usually subscribe to the 'solutions not philosphy' way of thinking regarding forum replies, but in this instance I agree. I have spent many a fretful hour writing forks in my code or workarounds to cater for Netscape 4.x anomalies and I have had enough.
It's bad enough that Netscape 4.x should lack basic support for various CSS and HTML standards, but it's also full of bugs, crashes regularly and one minor version can behave totally different to another. Then to cap it all they ship the abortion that is Netscape 6 - completely rewritten - so you've now got a new set of bugs to discover and find workarounds for - GREAT, THANK YOU SO MUCH.
Now I'm no great fan of Microsoft, but I have to say that IE 5.5 is one of the finest pieces of basically free software to ever be released and it is definitely the best web browser I have used so far.
So my personal recommendation is to do what I do, write code that is basically HTML standard compliant, make it look right in Opera and IE, ensure it is at least usable in Netscape and leave it at that.
You will then find that life is so much easier that you will have time to reply to forum posts with long diatribes like this.
Regards,
chrber