SVG tiny support in firefox et.al.

Hi

I am considering what would be the best thing to author SVG for i.e.
what standard would work broadly across all browsers and wonder if I
should not simply select the tiny profile since this would work on
mobile devices as well

but my question really is does firefox render all of the SVG tiny and
to what extent ?

regards

John Jones
http://www.johnjones.me.uk