Hi folks,
I have searched and searched for a solution to hiding table rows that is compatible with Firefox, and while what I have found is pertinent, it has not helped me with my problem.

I need to use the value from a dynamically populated select box to hide or show table rows depending on which option the user selects. This is not my code, I have been given the task of making this work in Firefox.
As far as I can tell, it the use of :

<tr id="someValue">
that is causing the problem. IE is more forgiving and renders the formatting correctly, but Firefox is dying a death here and I'm on a time limit.

The swapping (visibility/display css) is defined in an external javascript, which i have tried to modify to handle Firefox, i.e. I test fo IE and use
and for Firefox I am using
but I just can't seem to solve this one.

If anyone has any suggestions, they would be very gratefully recieved.