title: sort dataset array by value[1]
body: <p>How can I sort this dataset by its value [1] (4,10,19) so it returns as A,C,B?</p>
  
  <pre><code>var dataset = [
          ["A","4","570"],
          ["B","19","123"],
          ["C","10","395"],
      ];
  </code></pre>
  
  <p>Test: <a href="http://jsfiddle.net/2js5x/" rel="nofollow">http://jsfiddle.net/2js5x/</a></p>