title: render a circle onclick event in highcharts
body: <p>I have a requirement to render circles on click event in highcharts. The x,y value should be the point getting from click event I mean</p>
  
  <pre><code>var x = event.xAxis[0].value;
  var y = event.yAxis[0].value;
  </code></pre>
  
  <p>If I click more than one point there should render another circle.</p>
  
  <p>js fiddle:</p>
  
  <p><a href="http://jsfiddle.net/das_palash89/WN3XC/1/" rel="nofollow">http://jsfiddle.net/das_palash89/WN3XC/1/</a></p>