SVG image sizing

I am trying to create charts using the SVG backend. I am able to create
a chart but the size seems to be fixed in the upper right, and the image
does not resize to the browser window, as I would expect it to. When I
look at the SVG image code generated , I see the first portion of the
svg header as 1. below. If I adjust the header as in 2. with a
viewBox setting I get an image that will scall to the browser window,
and is centered. Is there a way to do this from with in Matplotlib?
1.
<svg
   xmlns="http://www.w3.org/2000/svg"
   xmlns:xlink="http://www.w3.org/1999/xlink"
   version="1.0"
   x="0.0"
   y="0.0"
   width="576"
   height="432"
   id="svg1">

2. <svg
   xmlns="http://www.w3.org/2000/svg"
   xmlns:xlink="http://www.w3.org/1999/xlink"
   version="1.0"
   viewBox="0 0 576 432"

   id="svg1">

C Scott Glackin
Production Support Specialist / IT
Lockwood®
10 Valley Stream Parkway
Malvern, PA 19355
Phone: (610)-651-8810
Email: CGlackin@...730...

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