Set custom map level when map updates

gfgeo-custom-zoom-level-on-map-update.php

function gfgeo_set_custom_zoom_level() {
    ?>
    jQuery( document ).ready( function() {

    	jQuery( document ).bind( 'gfgeo_update_map', function( event, mapObject ) {

			// set map zoom level to 10
	        mapObject.map.setZoom( 10 );

	        // pan map into new position
            mapObject.map.panTo( mapObject.latLng );
		});
    });
    </script>
    <?php
}
add_action( 'wp_footer', 'gfgeo_set_custom_zoom_level' );