GEOLOCATION

Enable user geolocation to center map on init. example: https:developers.google.commapsdocumentationjavascriptexamplesmap-geolocation

var map;

function initialize() {
  var mapOptions = {
    zoom: 6,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  };
  map = new google.maps.Map(document.getElementById(\'map-canvas\'),
      mapOptions);

   Try HTML5 geolocation
  if(navigator.geolocation) {
    navigator.geolocation.getCurrentPosition(function(position) {
      var pos = new google.maps.LatLng(position.coords.latitude,
                                       position.coords.longitude);

      var infowindow = new google.maps.InfoWindow({
        map: map,
        position: pos,
        content: \'Location found using HTML5.\'
      });

      map.setCenter(pos);
    }, function() {
      handleNoGeolocation(true);
    });
  } else {
     Browser doesn\'t support Geolocation
    handleNoGeolocation(false);
  }
}

function handleNoGeolocation(errorFlag) {
  if (errorFlag) {
    var content = \'Error: The Geolocation service failed.\';
  } else {
    var content = \'Error: Your browser doesn\\\'t support geolocation.\';
  }

  var options = {
    map: map,
    position: new google.maps.LatLng(60, 105),
    content: content
  };

  var infowindow = new google.maps.InfoWindow(options);
  map.setCenter(options.position);
}

google.maps.event.addDomListener(window, \'load\', initialize);