Flot Toggle Series

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script src="http://static.pureexample.com/js/flot/excanvas.min.js"></script>
<script src="http://static.pureexample.com/js/flot/jquery.flot.min.js"></script>
<script src="http://static.pureexample.com/js/flot/jquery.flot.stack.min.js"></script>

<!-- Javascript -->
<script type="text/javascript">
$(function () {    
    var data1 = GenerateSeries(0);
    var data2 = GenerateSeries(100);
    var data3 = GenerateSeries(200);
    var dataset = [data1, data2, data3];

    function GenerateSeries(added){
        var data = [];
        var start = 100 + added;
        var end = 200 + added;

        for(i=1;i<=100;i++){        
            var d = Math.floor(Math.random() * (end - start + 1) + start);        
            data.push([i, d]);
            start++;
            end++;
        }

        return data;
    }

    var options = {
            series:{
                stack: true     
            },
            legend: {
                position: 'nw',
                labelBoxBorderColor: "#000000",
                container: $("#example-section12 #legendPlaceholder"),
                noColumns: 0
            }
    };

    var plot;
    
    
    function ToggleSeries(){
        var d = [];

        $("#example-section28 input[type='checkbox']").each(function(){
            if($(this).is(":checked")){
                var seqence = $(this).attr("id").replace("cbdata", "");
                d.push({label:"data" + seqence, data: dataset[seqence - 1]});                
            } 
        });

        options.series.lines = {};
        options.series.bars = {};

        $("#example-section28 input[type='radio']").each(function(){
            if($(this).is(":checked")){
                if($(this).val() == "line"){                    
                    options.series.lines = {fill: true};
                }else{
                    options.series.bars = {show: true};
                }            
            } 
        });

        $.plot($("#example-section28 #flotcontainer"), d, options);  
    }

    
    $("#example-section28 input").change(function(){
        ToggleSeries();
    });

    ToggleSeries();
});
</script>

<!-- HTML -->
<div id="example-section28">
    <div id="legendPlaceholder"></div>
    <div id="flotcontainer" style="width: 600px;height:200px; text-align: left;margin-top:10px"></div>
    <Br>
    <div>
        Chart Type : <input id="chartType1" checked name="ct" type="radio" value="line" /><label for="chartType1" style="display:inline">Line chart</label>&nbsp;
        <input id="chartType2" name="ct" type="radio" value="bar" /><label for="chartType2" style="display:inline">Bar chart</label>&nbsp;
    </div>
    <div>
        Toggle series : <input type="checkbox" id="cbdata1" checked><label for="cbdata1" style="display:inline">data1</label>&nbsp;
        <input type="checkbox" id="cbdata2" checked><label for="cbdata2" style="display:inline">data2</label>&nbsp;
        <input type="checkbox" id="cbdata3" checked><label for="cbdata3" style="display:inline">data3</label>&nbsp;
    </div>
</div>