<script>
    $(function(){
        $.jqplot.preParseOptionsHooks.push(function(args){
            args.seriesDefaults.rendererOptions.dataLabelPositionFactor = 1.05;
        });
    });
</script>

 The charts are plotted using jqPlot. Head over to their website here to see the full list of available hooks for customization.

<script>
    $(function(){
        $.jqplot.preParseOptionsHooks.push(function(args){
            args.axesDefaults.drawMajorGridlines = false;
        });
    });
</script>

<script>
$(document).ready(function(){
    $('#jq_plot_chart').bind('jqplotDataClick',
        function (event, seriesIndex, pointIndex, data) {   
            console.log(event);
            console.log(seriesIndex);
            console.log(pointIndex);
            console.log(data);
            
            //for chart which used legend and x-axis, 
            var xaxis = $(".jqplot-xaxis-tick:eq("+pointIndex+")");
            var series = $(".jqplot-table-legend-label:eq("+seriesIndex+")");
            
            console.log("x-axis :" + xaxis.text());
            console.log("series :" + series.text());
        }
    );
 
    //for double click event. Please note the arguments are different.
    $('#jq_plot_chart').bind('jqplotDblClick',
        function (event, coordinate, points, data) {   
            console.log(event);
            console.log(coordinate);
            console.log(points);
            console.log(data);

            if (data) {
                var xaxis = $(".jqplot-xaxis-tick:eq("+data.pointIndex+")");
                var series = $(".jqplot-table-legend-label:eq("+data.seriesIndex+")");

                console.log("values :" + data.data);
                console.log("x-axis :" + xaxis.text());
                console.log("series :" + series.text());
            }
        }
    );
});
</script>

 This code does not work with OHLC and candlestick charts.