var map = new ol.Map({
  layers: [
    new ol.layer.Tile({
      source: new ol.source.OSM()
    }),
    new ol.layer.Tile({
      source: new ol.source.TileDebug({
        projection: 'EPSG:3857',
        tileGrid: new ol.tilegrid.XYZ({
          maxZoom: 22
        })
      })
    })
  ],
  renderer: exampleNS.getRendererFromQueryString(),
  target: 'map',
  view: new ol.View2D({
    center: ol.proj.transform(
        [-0.1275, 51.507222], 'EPSG:4326', 'EPSG:3857'),
    zoom: 10
  })
});