buffer

			<script type="text/javascript">
				var directionDisplay;
				var directionsService = new google.maps.DirectionsService();
				var map;

				var latlngs = <?= json_encode($lat_lng); ?>;



				function initialize() {
					directionsDisplay = new google.maps.DirectionsRenderer();
					var myOptions = {
						zoom:7,
						mapTypeId: google.maps.MapTypeId.ROADMAP,
					};
					map = new google.maps.Map($("#map_canvas")[0], myOptions);
					directionsDisplay.setMap(map);
					plot_points(latlngs);
				};

				$(window).load(initialize);

			//	latlngs = [ new google.maps.LatLng(40.749537, -73.9879906), new google.maps.LatLng(40.758883, -73.981014), new google.maps.LatLng(40.7618193, -73.9791976), new google.maps.LatLng(40.761628, -73.968478) ];



//					latlngs = [ new google.maps.LatLng(40.487978, -74.439342), new google.maps.LatLng(40.487978, -74.439342), new google.maps.LatLng(40.498187, -74.445195), new google.maps.LatLng(40.5041, -74.449091), new google.maps.LatLng(40.523768, -74.458305), new google.maps.LatLng(40.51992, -74.433583), new google.maps.LatLng(40.533959, -74.436622), new google.maps.LatLng(40.485633, -74.437406), new google.maps.LatLng(40.499666, -74.445021), new google.maps.LatLng(40.502681, -74.451444)
				//	];
				function plot_points(latlngs) 
				{

					for(var i=0; i < latlngs.length; i++)
					{
						latlngs = new google.maps.LatLng(latlngs[i].lat, latlngs[i].lng);
					}

					latlngs_start = latlngs[0];
					latlngs_end = latlngs[latlngs.length-1];

					var waypts = [];
					for (var i = 1 ; i < latlngs.length -1 ; i++ ) {
						waypts.push({
							location:latlngs[i],
							stopover:true
						});
					}

					console.log(waypts);

					var request = {
						origin: latlngs_start, 
						destination: latlngs_end,
						waypoints: waypts,
						optimizeWaypoints: false,
						travelMode: google.maps.DirectionsTravelMode.DRIVING

					};

					directionsService.route(request, function(response, status) {
						
						if (status == google.maps.DirectionsStatus.OK) {
							console.log(response);
							  directionsDisplay.setDirections(response);
						}
					});

					event.preventDefault();
					return false;
	
				};

			</script>