Forum Moderators: open
I hope we can figure this one out with you - if there is an issue with Netscape it would help a lot of people if we can zero in on exactly what it is.
Our forum Terms of Service do not allow for posting personal URLs - this rule was a necessary step at our high volume to keep promotional posts off the boards so we get a good "signal to noise" ratio here.
I invite you to read our Welcome Thread [webmasterworld.com] in the community forum. It's a great orientation to our "tools and rules".
Now, on to your onChange question. You're welcome to post a small snippet of the javascript you used. My assumption right now is that there is no problem with the onchange event handler, but rather in the way the particular form elements are addressed in your code.