title: Highcharts : selection issue on funnel charts type
body: <p>I'm experiencing a problem  when trying to make a selection (by clicking on funnel sections) in funnel charts. A JS error occurs during the selection process. </p>
  
  <p>Thanks a lot</p>
  
  <p><a href="http://jsfiddle.net/JvY4s/1246/" rel="nofollow">http://jsfiddle.net/JvY4s/1246/</a></p>
  
  <pre><code>$(function () {
  
  
  var chart = new Highcharts.Chart({
      chart: {
          renderTo: 'container',
          type: 'funnel',
          marginRight: 100
      },
      title: {
          text: 'Sales funnel'
      },
      plotArea: {
          shadow: null,
          borderWidth: null,
          backgroundColor: null
      },
      plotOptions: {
          series: {
              allowPointSelect:true,
              dataLabels: {
                  enabled: true,
                  format: '&lt;b&gt;{point.name}&lt;/b&gt; ({point.y:,.0f})',
                  color: 'black',
                  softConnector: true
              },
              neckWidth: '30%',
              neckHeight: '25%'
  
              //-- Other available options
              // height: pixels or percent
              // width: pixels or percent
          }
      },
      legend: {
          enabled: false
      },
      series: [{
          name: 'Unique users',
          data: [
              ['Website visits',   15654],
              ['Downloads',       4064],
              ['Requested price list', 1987],
              ['Invoice sent',    976],
              ['Finalized',    846]
          ]
      }]
  });
  
  // Add the jQuery UI resizin
  var container = $('#container')[0];
  $('#resizer').resizable({
      // On resize, set the chart size to that of the 
      // resizer minus padding. If your chart has a lot of data or other
      // content, the redrawing might be slow. In that case, we recommend 
      // that you use the 'stop' event instead of 'resize'.
      resize: function() {
          chart.setSize(
              this.offsetWidth - 20, 
              this.offsetHeight - 20,
              false
          );
      }
  });
  });
  </code></pre>