Untitled

// bounds of the desired area
var allowedBounds = new google.maps.LatLngBounds(
     new google.maps.LatLng(70.33956792419954, 178.01171875),
     new google.maps.LatLng(83.86483689701898, -88.033203125)
);
var lastValidCenter = map.getCenter();

google.maps.event.addListener(map, 'center_changed', function() {
    if (allowedBounds.contains(map.getCenter())) {
        // still within valid bounds, so save the last valid position
        lastValidCenter = map.getCenter();
        return;
    }

    // not valid anymore => return to last valid position
    map.panTo(lastValidCenter);
});

<!DOCTYPE html>
<html>
<head>
   <meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
   <title>Google Maps JavaScript API v3 Example: Limit Panning</title>
   <script type="text/javascript"
           src="http://maps.google.com/maps/api/js?sensor=false"></script>
</head>
<body>
   <div id="map" style="width: 400px; height: 300px;"></div>

   <script type="text/javascript">

   var minZoomLevel = 5;

   var map = new google.maps.Map(document.getElementById('map'), {
      zoom: minZoomLevel,
      center: new google.maps.LatLng(38.50, -90.50),
      mapTypeId: google.maps.MapTypeId.ROADMAP
   });

   // Bounds for North America
   var allowedBounds = new google.maps.LatLngBounds(
     new google.maps.LatLng(28.70, -127.50),
     new google.maps.LatLng(48.85, -55.90));

   // Listen for the dragend event
   google.maps.event.addListener(map, 'dragend', function() {
     if (allowedBounds.contains(map.getCenter())) return;

     // Out of bounds - Move the map back within the bounds

     var c = map.getCenter(),
         x = c.lng(),
         y = c.lat(),
         maxX = allowedBounds.getNorthEast().lng(),
         maxY = allowedBounds.getNorthEast().lat(),
         minX = allowedBounds.getSouthWest().lng(),
         minY = allowedBounds.getSouthWest().lat();

     if (x < minX) x = minX;
     if (x > maxX) x = maxX;
     if (y < minY) y = minY;
     if (y > maxY) y = maxY;

     map.setCenter(new google.maps.LatLng(y, x));
   });

   // Limit the zoom level
   google.maps.event.addListener(map, 'zoom_changed', function() {
     if (map.getZoom() < minZoomLevel) map.setZoom(minZoomLevel);
   });

   </script>
</body>
</html>

<!DOCTYPE html>
<html>
    <head>
        <style type="text/css">
            html { height: 100% }
            body { height: 100%; margin: 0; padding: 0 }
            #map-canvas { height: 100% }
        </style>
        <script type="text/javascript"
            src="http://maps.google.com/maps/api/js?sensor=false"></script>
        </script>
        <script type="text/javascript">
            function initialize() {
                var mapOptions = {
                    center: new google.maps.LatLng(28.70, -127.50),
                    zoom: 4,
                    mapTypeId: google.maps.MapTypeId.ROADMAP
                };
                var map = new google.maps.Map(document.getElementById("map-canvas"),
                        mapOptions);

                // bounds of the desired area
                var allowedBounds = new google.maps.LatLngBounds(
                  new google.maps.LatLng(28.70, -127.50),
                  new google.maps.LatLng(48.85, -55.90)
                );
                var boundLimits = {
                    maxLat : allowedBounds.getNorthEast().lat(),
                    maxLng : allowedBounds.getNorthEast().lng(),
                    minLat : allowedBounds.getSouthWest().lat(),
                    minLng : allowedBounds.getSouthWest().lng()
                };

                var lastValidCenter = map.getCenter();
                var newLat, newLng;
                google.maps.event.addListener(map, 'center_changed', function() {
                    center = map.getCenter();
                    if (allowedBounds.contains(center)) {
                        // still within valid bounds, so save the last valid position
                        lastValidCenter = map.getCenter();
                        return;
                    }
                    newLat = lastValidCenter.lat();
                    newLng = lastValidCenter.lng();
                    if(center.lng() > boundLimits.minLng && center.lng() < boundLimits.maxLng){
                        newLng = center.lng();
                    }
                    if(center.lat() > boundLimits.minLat && center.lat() < boundLimits.maxLat){
                        newLat = center.lat();
                    }
                    map.panTo(new google.maps.LatLng(newLat, newLng));
                });
            }
            google.maps.event.addDomListener(window, 'load', initialize);
        </script>
    </head>
    <body>
        <div id="map-canvas"/>
    </body>
</html>

// Limit panning
var lastCenter = map.getCenter();

google.maps.event.addListener(map, 'dragstart', function() {
    lastCenter = map.getCenter();
});

google.maps.event.addListener(map, 'dragend', function() {
    if(allowedBounds.contains(map.getCenter())) return;

    map.setCenter(lastCenter);
});

var latlng = new google.maps.LatLng(18.283078,84.047556);
     var myOptions = {
          zoom: 12,

          center: latlng,
          zoomControl: false,
          mapTypeId: google.maps.MapTypeId.ROADMAP,
          scrollwheel: false,
        navigationControl: false,
        mapTypeControl: false,
        scaleControl: false,
        draggable: false,
        disableDoubleClickZoom: true,
        };
        map = new google.maps.Map(document.getElementById("map_canvas"),   myOptions);

map = new google.maps.Map( // defaults
        document.getElementById("map22"),
        {
            disableDefaultUI        : true,
            zoomControl             : true,
            zoom                    : 7,
            minZoom                 : 7,
            maxZoom                 : 10,
            center                  : new google.maps.LatLng(
                64.99473104134819,
                -19.22332763671875
            ),
            mapTypeId               : google.maps.MapTypeId.ROADMAP
        }
    );


    function borders(){
        return {
            maxLat : map.getBounds().getNorthEast().lat(),
            maxLng : map.getBounds().getNorthEast().lng(),
            minLat : map.getBounds().getSouthWest().lat(),
            minLng : map.getBounds().getSouthWest().lng(),
            center : map.getCenter()
        }
    }

    google.maps.event.addListenerOnce(map,'idle',function() {
        limit = borders();
    });

    google.maps.event.addListener(map,'drag',function() {
        if(map.getZoom() == 7) return map.setCenter(limit.center);
        current = borders();
        if( current.maxLng < limit.maxLng && current.minLng > limit.minLng ) activeCenterLng = current.center.lng();
        if( current.maxLat < limit.maxLat && current.minLat > limit.minLat ) activeCenterLat = current.center.lat();
        map.setCenter(
            new google.maps.LatLng(
                activeCenterLat,
                activeCenterLng
            )
        );
    });

google.maps.event.addListener(map, 'center_changed', function() {
    var mapBounds = map.getBounds();
    if(allowedBounds.contains(mapBounds.getNorthEast()) && allowedBounds.contains(mapBounds.getSouthWest())) {
        lastCenter = map.getCenter();
        return;
    }

    map.panTo(lastCenter);
}, this));

google.maps.event.addListener(map, 'center_changed', function(){
    checkBounds();
});

function checkBounds() {

    //console.log("call uit");

    // Perform the check and return if OK
    console.log(map.getCenter());
    if (bounds.contains(map.getCenter())) {
        return;
    }
    // It`s not OK, so find the nearest allowed point and move there
    var C = map.getCenter();
    var X = C.lng();
    var Y = C.lat();

    var AmaxX = bounds.getNorthEast().lng();
    var AmaxY = bounds.getNorthEast().lat();
    var AminX = bounds.getSouthWest().lng();
    var AminY = bounds.getSouthWest().lat();

    if (X < AminX) {X = AminX;}
    if (X > AmaxX) {X = AmaxX;}
    if (Y < AminY) {Y = AminY;}
    if (Y > AmaxY) {Y = AmaxY;}

    console.log("Restricting "+Y+" "+X);
    map.setCenter( new google.maps.LatLng(Y,X));


    //showLatlong();
}