Visibility on an element?

[Bishop, Michael W. CONTR J9C880]

Is there any way to determine whether or not an SVG is visible?  I’m looking for a global solution.  I’m trying to work with layers:   <g style=”display:none”> is the way I indicate a layer is not visible.  I’m sure there are other ways to turn it off as well.   However, for visible layers:   <g> and <g style=”display:block”> would work and I’m sure there are other ways.   I’m looking for a way to determine visibility regardless of how the SVG document is created?  If I parse the attributes (which I currently do) inconsistencies can arise.   public static boolean isVisible(Element element) { … }   Is there a way to find this out?  Maybe at a lower-level?  Is there a point where Batik decides whether or not to draw a particular object?  Obviously a <g> tag isn’t typically “drawn” anyway so this setting would apply to its children which may complicate the solution.   Michael Bishop