Th eproblem with the top bar on nn4 is the tiled background really - obviosuly if you are going to be making mods to suit nn4 users then either change that html or put a browser sniffer in to do the job.
The form tags - diff story - will not cause a problem in any browser that I have worked with across pc/macs etc - just not necessarily neat coding.
Reason to put it outside of table cells is cos the form tag creates a default space and unless you change this with style sheet settings, you will have a totally disjointed page and not know why.
my biggest issue with the code is not these things but the lack of "" in the assigning of values.
- can causes probs on macs and is not strictly w3c friendly..but then what is
