Xect

const CONTINENTS = ["europe", "asia", "africa", "north_america", "south_america", "antartica", "oceanic"];
var map;
var previousInfowindow;
var ref = new Firebase("https://publicdata-earthquakes.firebaseio.com/by_continent/");

function mapQuake(snapshot) {
    var quake = snapshot.val();
    var myLatlng = new google.maps.LatLng(quake.location.lat,quake.location.lng);
    map.setCenter(myLatlng);