[Mateus]

Огромное спасибо, melky.
Если кому интересно, то сделал так:

var map;

function initialize() {
  var city= new google.maps.LatLng(0.000000 ,00.000000);
  var mapOptions = {
    zoom: 13,
    center: city,
  };
  map = new google.maps.Map(document.getElementById('map-canvas'),
      mapOptions);
  
    var marker = new google.maps.Marker({
    position: city,
	draggable:true,
	icon:image,
    map: map,
	animation: google.maps.Animation.DROP,
  }); 
	
	
google.maps.event.addListener(map, "click", function(event) {
	position_x = event.latLng.lat();
	position_y = event.latLng.lng();
	marker.setPosition(event.latLng);
  	$('#map_coordinates').empty().append(position_x+' '+position_y);
});

google.maps.event.addListener(marker,"dragend", function(event) {
	position_x = marker.getPosition().lat();
	position_y = marker.getPosition().lng();
	$('#map_coordinates').empty().append(position_x+' '+position_y);
});

// gdsgsdgdsgsg



}
var image = 'http://google-maps-icons.googlecode.com/files/beach-nudist.png';
// Add a marker to the map and push to the array.
function addMarker(location) {
  var marker = new google.maps.Marker({
    position: location,
	draggable:true,
	icon:image,
    map: map,
  });  
  markers.push(marker);
	$('#map_coordinates').empty().append(location.e+' '+location.d);

}

// 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);
}

google.maps.event.addDomListener(window, 'load', initialize);