Google Charts inside BS# tabs

Google Charts inside BS# tabs

HTML

<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
    <script type="text/javascript" src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
    <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>

        <div class="container">

          <div class="row text-center">

            <div class="col-sm-12">
              <div class="thumbnail">
              
              <h3>Title</h3>

    <hr>

                <ul class="nav nav-tabs">
                  <li class="active"><a  data-toggle="tab" href="#BUS">Bus</a></li>
                  <li><a  data-toggle="tab" href="#RES">Res</a></li>
                </ul>

                <div class="tab-content">
                  <div id="BUS" class="tab-pane active">
                  
                    <div class="row">
                      <h3>BUS title</h3>
                      <div class="col-sm-9">
                        <div id="AreaB1"></div>
                      </div>
                      <div class="col-sm-3">
                        <div id="PieB1"></div>
                      </div>
                    </div><!-- .row -->

          <script type="text/javascript">

            function drawChartsB()
            {
              var view;

              var AreaOpt = {
                height: 200,
                legend: { position: 'bottom', maxLines: 1 },
              };

              var PieOpt = {
                height: 200,
                legend: { position: 'bottom', maxLines: 1 }
              };

              view = new google.visualization.DataView(google.visualization.arrayToDataTable([['X','A','B'],['2017M02',95,0],['2017M03',129,0],['2017M04',42,33]]));
              view.setColumns([0,1,{sourceColumn:1,role:"annotation"},2,{sourceColumn:2,role:"annotation"}]);
...