title: Click event on clicking on the graph
body: <p>I have a series of line graph plotted with highcharts and the tooltip is shared among them.</p>
  
  <p><a href="http://jsfiddle.net/FhF3A/" rel="noreferrer">http://jsfiddle.net/FhF3A/</a></p>
  
  <pre><code> $('#container').highcharts({
          tooltip: {
              shared: true
          },
          series: [{
              name: 'Berlin',
              data: [-0.9, 0.6, 3.5, 8.4, 13.5, 17.0, 18.6, 17.9, 14.3, 9.0, 3.9, 1.0]
          }, {
              name: 'London',
              data: [3.9, 4.2, 5.7, 8.5, 11.9, 15.2, 17.0, 16.6, 14.2, 10.3, 6.6, 4.8]
          }]
      });
  </code></pre>
  
  <p>What should be the best way to capture the dblclick event and obtain the hover y axis value on the graph ?</p>