$.ajax({
							url: "engine/displayMarker.php",
							type: "POST",
							data: { distance: radius } ,
							success: function (response) 
							{
								var markers_loc = JSON.parse(response);

								
								for (var i = 0; i < markers_loc.length; i++) {  
									marker = new google.maps.Marker({
										position: new google.maps.LatLng(markers_loc[i]["lat_coordinate"], markers_loc[i]["lng_coordinate"]),
										map: map,
										title:markers_loc[i]["store_name"] 
									});
								}
							},
							error: function ()
							{
								alert("error");
							}
                        });