Actually, I found a way to get the opacity setting working in both. Mozilla just uses it's own way of doing it.
img.display

{
filter:alpha(opacity=70); -moz-opacity: 70%
}

Feel free to use this in lojack too, if you want. I'm still having a problem with the color in Mozilla. I'm using javascript to set the cell background image from a cookie, and I don't believe it is possible to set a cell background image from javascript in Mozilla. I use (doucment.all) which is IE only.

Tom