title: Simple javascript library for visualizing a graph/network in a circle?
body: <p>I am looking for a javascript library which plots networks with the nodes arranged in a circle.</p>
  
  <p>There are some other good questions about javascript visualisation in general, but most of the things referenced seem to be quite heavyweight toolkits.  I am looking for a simple API that lets me pass in an array of string pairs representing connections, and then plots the nodes of the resulting graph in a circle, with interior lines joining the connected nodes.</p>
  
  <p>Requirements: javascript (not flash), free, available for offline use</p>