Scroll bar in Highcharts tooltip
<p>I have a lot of data in the tooltip of a highcharts bar chart. Each tooltip data has some 50-60 lines and the complete tooltip is not being able to be displayed in the graph container. In order to view all of it, i want a scroll bar in tooltip. Is it possible?</p>

<p>Here is an example of the code.</p>

<p><a href="http://jsfiddle.net/o2zmLngr/7/" rel="nofollow"> Working jsFiddle example </a></p>

<p>Here is the tooltip code. I don't know where to add the scroll bar code.</p>

<pre><code>tooltip: {
  useHTML: true,
  pointFormatter: function() {
    var string = '';
    Highcharts.each(toolTip[this.series.data.indexOf(this)], function(p) {
      string += p + '&lt;/a&gt;&lt;br&gt;'
    })
    return "Incident&lt;br&gt;" + string + "&lt;br /&gt;";
  }
}
</code></pre>