Update index.html

public/index.html

@@ -22,13 +22,13 @@
         <div id="cesiumContainer"></div>
 		<!-- defining menu panel -->
         <div class="backdrop" id="menu">
-		    <h2>Meidling 3D Viewer</h2>
+		    <h2>Meidling 3D Viewer <i class="fa fa-info-circle" style="font-size:15px;color:yellow" onclick="window.open('https://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/VIII-4-W1-2021/81/2021/')"> </i></h2>
 			<span><strong>3D City Model</strong></span>
             <div class="nowrap">
 					<input id="buildings" type="checkbox" checked onclick="showbuildings()" />
-					<label for="buildings">Buildings</label>
+					<label for="buildings">Buildings</label> <i class="fa fa-info-circle" style="font-size:15px;color:yellow" onclick="window.open('https://www.data.gv.at/katalog/dataset/86d88cae-ad97-4476-bae5-73488a12776d')"> </i>
 					<input id="landuse" type="checkbox" onclick="showlanduse()" />
-					<label for="landuse">LandUse</label>
+					<label for="landuse">LandUse</label> <i class="fa fa-info-circle" style="font-size:15px;color:yellow" onclick="window.open('https://www.data.gv.at/katalog/dataset/2f5baa1f-208c-42c2-8d04-9ea74aa1b229')"> </i>
             </div> 
             <br>
             <span><strong>Analysis</strong></span>