Add this in my CSS worked for me on all Mozilla browsers.
-moz-border-radius-bottomleft:3px;
-moz-border-radius-bottomright:3px;
-moz-border-radius-topleft:3px;
-moz-border-radius-topright:3px;
I think what your looking for is called Stereo3D Toolbox. It’s the only one I know of that can do pretty much everything you would ever need to do in 3D.