<divid="chartcontainer"style="visibility: hidden;"><divclass='legend-title'>Select a Building</div><buttontype="button"class="cesium-infoBox-close"onclick="closeChart()">×</button>
<divid="chartcontainer"style="visibility: hidden;"><divclass='legend-title'>Select a Building</div><buttontype="button"class="cesium-infoBox-close"onclick="closeChart()">×</button>