var map = '';
var markerCluster = '';

var obras = new Array();

  
  obras.push(new Array(27.8571138,-15.4123197,3));

  
  obras.push(new Array(27.767671,-15.608795,4));

  
  obras.push(new Array(27.995900580744767,-15.389234572649002,5));

  
  obras.push(new Array(27.995846108909113,-15.388661921024323,6));

  
  obras.push(new Array(27.99744946402863,-15.389290899038315,7));

  
  obras.push(new Array(27.996331617777823,-15.388327986001968,8));

  
  obras.push(new Array(27.997139215490108,-15.388486236333847,10));

  
  obras.push(new Array(27.997726555479705,-15.389404892921448,11));




var images_url = [];

  images_url.push("/images/map_cluster_marker_1.png?1265041394")

  images_url.push("/images/map_cluster_marker_2.png?1265041394")

  images_url.push("/images/map_cluster_marker_3.png?1265041394")



var icon = new GIcon(G_DEFAULT_ICON);
icon.image = "/images/map_marker.png?1265041394"
markerOptions = { icon:icon };


document.observe('dom:loaded', function() {
  map = new GMap2(document.getElementById("map_obras"));
  map.addControl(new GSmallMapControl());
  map.addControl(new GMapTypeControl());
  map.setCenter(new GLatLng(27.964001130618087,-15.8642578125), 7);
  generar_puntos(map,obras);
});

function generar_puntos(map,obras) {
  var markers = [];

  for(var i=0; i<obras.length; i++) {    
     markers.push(generar_punto(obras[i],map));
  }

  var options = new Object();
  options.styles = cluster_style();
  markerCluster = new MarkerClusterer(map, markers,options);  
}

function cluster_style() {
  var images_style = [];
  for(var i=0; i<images_url.length; i++) {
    var point = new Object();
    point.width = 76;
    point.height = 42;
    point.url = images_url[i];
    images_style.push(point);
  }
  return images_style;
}

function generar_punto(obra,map) {
   var latlng = new GLatLng(obra[0],obra[1]);
   var marker = new GMarker(latlng,markerOptions);
   GEvent.addListener(marker, 'click', function() {
      marker.openExtInfoWindow(
        map,
        "map_window",
        "Loading...",
        {beakOffset: 3, ajaxUrl:"/obras/preview/"+obra[2] }
      );
    });
    return marker;
}

function delete_puntos() {
  markerCluster.clearMarkers();
}