function initMap() { var map = new google.maps.Map(document.getElementById('map'), { zoom: 11, center: {lat: 41.876, lng: -87.624} });
var ctaLayer = new google.maps.KmlLayer({
url: 'http://googlemaps.github.io/js-v2-samples/ggeoxml/cta.kml',
map: map
});
}