imations>
            <paper-menu class="dropdown-content" selected="{{secondary}}">
              <template is="dom-repeat" items="[[columns]]" as="column">
                <paper-item>[[column]]</paper-item>
              </template>
            </paper-menu>
          </paper-dropdown-menu>
        </div>
        <div id="chart1">
            <svg style='height:500px'></svg>
        </div>
        <content id="content"></content>
    </template>
</dom-module>

<script>
'use strict';

Polymer({
    is: 'u