ylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/toastr.js/2.1.3/toastr.min.css">
{% end %}
{% block content %}
<div id="mapol" class="mapol"></div>
<br>
 <script>
      // this example uses topolis and toastr for which we don't have an externs file.

      var raster = new ol.layer.Tile({
        source: new ol.source.OSM()
      });

      var nodes = new ol.source.Vector({wrapX: false});
      var nodesLayer = new ol.layer.Vector({
        source: nodes,
        style: function(f) {
          var s