Offset Google Maps without Animating

google.maps.Map.offsetCenter.js

/**
             * Offsets the map's center from it's current position.
             *
             * @param {Integer} offsetX. X coord to offset by.
             * @param {Integer} offsetY. Y coord to offset by.
             */
            google.maps.Map.prototype.offsetCenter = function ( offsetX, offsetY ) {

                    // Shortcut for google Point
                var gPoint = google.maps.Point,
                    // Shortcut for google LatLng
                    gLatLng = google.maps.LatLng,
                    // Get the map's projection
                    mProj = this.getProjection(),
                    // Get th map's current bounds
                    mBounds = this.getBounds(),
                    // Get the map's current center point, returns LatLng
                    mapCenter = this.getCenter(),
                    // Scale of current map, helps us determine how much of an offset we have.
                    scale = Math.pow( 2, this.getZoom() ),
                    // Get world center
                    worldCordCenter = mProj.fromLatLngToPoint( mapCenter ),
                    // Get the offset point. 
                    pOffset = new gPoint( ( offsetX/scale ) || 0, ( offsetY/scale ) || 0 ),
                    // Get our new coordinate world center, the offset happens here.
                    worldCoordNewCenter = new gPoint( worldCordCenter.x - pOffset.x, worldCordCenter.y - pOffset.y ),
                    // Get the new center LatLng coordinates.
                    newCenter = mProj.fromPointToLatLng( worldCoordNewCenter )
                ;

                // Set the map's new offset center.
                this.setCenter( newCenter );


            };