Dynamic SELECT lists and Netscape

Hi all!

I am building a page with multiple SELECT lists where one SELECT list's 
contents change dynamically based on what the user chooses from the other 
SELECT list.  The Javascript code works fine, however the visible result in 
Netscape is less than desirable.  I have loaded a sample at:

http://www.geocities.com/sly_witherspoon/DynamSelectBox.html

Not only doesn't Netscape resize the width of the SELECT box dynamically it 
doesn't alter the number of displayed options when a user clicks on the 
little arrow to the right.  Is there something I need to do in order to get 
Netscape to behave, or will I need to force a size=5 (like the first one) 
for all three?

If this isn't clear or if I am off my rocker in my implementation, please 
let me know and I will try to clarify.

Thanks in advance,
Eric

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