([16.3725, 48.208889]);

      // Vienna marker
      var marker &#x3D; new ol.Overlay({
        position: pos,
        positioning: &#x27;center-center&#x27;,
        element: document.getElementById(&#x27;marker&#x27;),
        stopEvent: false
      });
      map.addOverlay(marker);

      // Vienna label
      var vienna &#x3D; new ol.Overlay({
        position: pos,
        element: document.getElementById(&#x27;vienna&#x27;)
      });
      map.addOverlay(vienna);

      // Popup showing the position 