;map&#x27;,
  view: new ol.View({
    center: [0, 0],
    zoom: 2
  })
});

var pos &#x3D; ol.proj.fromLonLat([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 sh