function getNormalizedCoord(coord, zoom) {
    var y = coord.y;
    var x = coord.x;

    // tile range in one direction range is dependent on zoom level
    // 0 = 1 tile, 1 = 2 tiles, 2 = 4 tiles, 3 = 8 tiles, etc
    var tileRange = 1 << zoom;

    // don't repeat across y-axis (vertically)
    if (y < 0 || y >= tileRange) {
        return null;
    }

    // repeat across x-axis
    if (x < 0 || x >= tileRange) {
        x = (x % tileRange + tileRange) % tileRange;
    }

    return {
        x: x,
        y: y
    };
}

var map;

function initMaps() {

    $.getScript("http://google-maps-utility-library-v3.googlecode.com/svn/trunk/infobox/src/infobox.js").done(function (script, textStatus) {

        var customMapTypeOptions = {
            getTileUrl: function (coord, zoom) {
                var normalizedCoord = getNormalizedCoord(coord, zoom);
                if (!normalizedCoord) {
                    return null;
                }
                var bound = Math.pow(2, zoom);
                console.log('http://img.photobucket.com/albums/v229/s15199d/ + normalizedCoord.x + '-' + (bound - normalizedCoord.y - 1) + '.png');
                return 'http://img.photobucket.com/albums/v229/s15199d/ + normalizedCoord.x + '-' + (bound - normalizedCoord.y - 1) + '.png';
            },
            tileSize: new google.maps.Size(250, 250),
            maxZoom: 0,
            minZoom: 0,
            radius: 1738000,
            name: 'custom map'
        };

        var customMapType = new google.maps.ImageMapType(customMapTypeOptions);

        var latlng = new google.maps.LatLng(0, 0), // center point

        mapOptions = {
            zoom: 0,
            center: latlng,
            draggable: true,
            scrollwheel: false,
            mapTypeControl: false,
            panControl: false,
            scaleControl: false,
            zoomControl: true,
            zoomControlOptions: {
                style: google.maps.ZoomControlStyle.LARGE,
                position: google.maps.ControlPosition.RIGHT_TOP
            },
            streetViewControl: false,
            streetViewControlOptions: {
                position: google.maps.ControlPosition.RIGHT_TOP
            },
            mapTypeControlOptions: {
                mapTypeIds: ['custom map']
            }
        };

        map = new google.maps.Map(document.getElementById('map_canvas'), mapOptions);

        map.mapTypes.set('custom map', customMapType);
        map.setMapTypeId('custom map');

    });
}

$(function () {
    if (window.google && google.maps) {
        //alert("Map script is already loaded. Initializing");
        initMaps();
    } else {
        //alert("Lazy loading Google map...");
        lazyLoadGoogleMap();
    }

});

function lazyLoadGoogleMap() {
    $.getScript("http://maps.google.com/maps/api/js?sensor=true&callback=initMaps")
    .done(function (script, textStatus) {
        //alert("Google map script loaded successfully");
    })
    .fail(function (jqxhr, settings, ex) {
        //alert("Could not load Google Map script: " + jqxhr);
    });
}