>Check whether this is what you need:
>

>document.getElementById('MyTable').style.display='none';
>document.getElementById('MyTable').style.backgroundColor='#CCCCCC';
>document.getElementById('MyTable').style.display='block';
>

I finally found why. In Netscape, the bug is that on a Table style, you can only change it once. You can't change it after. However, at the Td level, that is ok. So, I changed my style to have the Td defined as well with the background for the Netscape version.