title: graphviz svg autoresize
body: <p>I've got a graph made by graphviz <strong>circo</strong> (or <strong>dot</strong>, i guess in this issue there's no difference) in svg format and i'd like this image to be resized automaticly.
  I know it can be done if i set</p>
  
  <p><code>&lt;svg width="100%" height="100%"...</code></p>
  
  <p>but i can't realize how to make circo to do this.</p>
  
  <p>The graph file for circo is generated in php like this:</p>
  
  <pre><code>$graph = "digraph structs {
  node [shape=record, URL=\"http://localhost/gr.php?object=\N\"];
  overlap = prism;
  size=\"50,50\";`
  </code></pre>
  
  <p>I've tried <code>size=\"100%,100%\";</code> but circo translates it into <code>&lt;svg width="3600pt" height="2946pt"</code>.
  So, how can i make circo put <code>100%</code> in there?
  Thanks!</p>