gistfile1.js

var markers = [],
  		ticketsStorage = [],
  		nowTicketId;
  	var mapProp = {
  		center: new google.maps.LatLng(50.4459229,30.5214291),
  		zoom: 10,
  		mapTypeId: google.maps.MapTypeId.ROADMAP
  	};
  	var map = new google.maps.Map(document.getElementById("googleMap"),mapProp);

  	// Add a marker to the map and push to the array.
  	function addMarker(location) {
  	  var marker = new google.maps.Marker({
  	    position: location,
  	    map: map
  	  });
  	  markers.push(marker);
  	}

  	// Sets the map on all markers in the array.
  	function setAllMap(map) {
  	  for (var i = 0; i < markers.length; i++) {
  	    markers[i].setMap(map);
  	  }
  	}

  	// Removes the markers from the map, but keeps them in the array.
  	function clearMarkers() {
  	  setAllMap(null);
  	}

  	// Shows any markers currently in the array.
  	function showMarkers() {
  	  setAllMap(map);
  	}

  	// Deletes all markers in the array by removing references to them.
  	function deleteMarkers() {
  	  clearMarkers();
  	  markers = [];
  	}