html, body {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

button {

    margin: 10px 0 0 10px;

}

#container {

    position: absolute;

    width: 100%;

    top: 35px;

    bottom: 0;

}

anychart.onDocumentReady(function () {

​

    // create data for the first series

    var data1 = [

      {x: 0.6, value: 22},

      {x: 1.7, value: 55},

      {x: 2.3, value: 50},

      {x: 3.5, value: 80},

      {x: 3.9, value: 74},

      {x: 4, value: 68},

      {x: 4, value: 76},

      {x: 4.1, value: 84},

      {x: 4.7, value: 93}

    ];

​

    // create data for the second series

    var data2 = [

      {x: 1.3, value: 25},

      {x: 1.3, value: 44},

      {x: 1.5, value: 40},

      {x: 2,   value: 37},

      {x: 2.5, value: 35},

      {x: 2.8, value: 66},

      {x: 3.2, value: 56},

      {x: 3.3, value: 60},

      {x: 3.5, value: 97}

    ];

​

    // create data for the third series

    var data3 = [

      {x: 0.5, value: 17.5},

      {x: 4.75, value: 100}

    ];

​

    // create a chart

    var chart = anychart.scatter();

​

    // create series, set the data and names

    series1 = chart.marker(data1);

    series2 = chart.marker(data2);

    series3 = chart.line(data3);

    series1.name("Drug 1");

    series2.name("Drug 2");

    series3.name("Trend");

​

    // enable major grids

    chart.xGrid(true);

    chart.yGrid(true);

​

    // enable minor grids 

    chart.xMinorGrid(true);

    chart.yMinorGrid(true);

​

    // enable the legend

    chart.legend(true);

    // set the chart title

    chart.title("Individual Legend Items: Enabling / Disabling");

​

    // set the container id

    chart.container("container");

​

    // initiate drawing the chart

    chart.draw();

});

​

// enable / disable the last item

function itemEnabled(enabled) {

  series3.legendItem(enabled);

}