text: goog.require('ol.Map');
  goog.require('ol.View2D');
  goog.require('ol.interaction');
  goog.require('ol.interaction.Select');
  goog.require('ol.layer.Tile');
  goog.require('ol.layer.Vector');
  goog.require('ol.source.GeoJSON');
  goog.require('ol.source.MapQuest');
  
  var raster = new ol.layer.Tile({
    source: new ol.source.MapQuest({layer: 'sat'})
  });
  
  var vector = new ol.layer.Vector({
    source: new ol.source.GeoJSON({
      projection: 'EPSG:3857',
      url: 'data/geojson/countries.geojson'
    })
  });
  
  var select = new ol.interaction.Select();
  
  var map = new ol.Map({
    interactions: ol.interaction.defaults().extend([select]),
    layers: [raster, vector],
    renderer: 'canvas',
    target: 'map',
    view: new ol.View2D({
      center: [0, 0],
      zoom: 2
    })
  });
  