onchange event in <select> in FireFox

[bmichael]

I have a <select> object that i've set up an onchange event that fires
in IE fine when I use the cursor up and down in the list, but If I use
the cursor up and down in Firefox the event doesn't seem to fire until
I've left the field....If i use the mouse all is fine, only when using
the cursor keys does it not fire the onchange event in FF.

Thanks for any help in advance.

Michael