<html>
  <head>
    <link href="/css/c3.css" rel="stylesheet" type="text/css">
  </head>
  <body>
    <div id="chart"></div>

    <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
    <script src="/js/c3.js"></script>
    <script>
      var chart = c3.generate({
        data: {
          columns: [
            ['data1', 30, 200, 100, 400, 150, 250, 100, 600],
            ['data2', 50, 20, 10, 40, 15, 25],
          ]
        },
        axis: {
//          rotated: true,
          x: {
   