var minLongitude ;
    var maxLongitude ;
    var minLatitude ;
    var maxLatitude ;
    function createMarkerPto(point, index, info, entradilla, imagen) {
        var icono = new GIcon(G_DEFAULT_ICON);
        //icono.image = "/MODULOS/global/admin/interfaces/img/iconos/ico_marcador.gif";
        //icono.shadow = null;
        //icono.iconSize = new GSize(13, 13);
        //icono.iconAnchor = new GPoint(5, 10);
        //icono.infoWindowAnchor = new GPoint(9, 2);
        //icono.infoShadowAnchor = new GPoint(18, 25);
        //icono.printImage = "/MODULOS/global/admin/interfaces/img/iconos/ico_marcador.gif";
        //icono.mozPrintImage = "/MODULOS/global/admin/interfaces/img/iconos/ico_marcador.gif";
        // Set up our GMarkerOptions object
        markerOptions = { icon:icono };
        var marker = new GMarker(point, markerOptions);
        if(imagen!=undefined){
            if(entradilla!=undefined){
                GEvent.addListener(marker, "mouseover", function() {
                       var html = imagen+"<div style='width: 170px'>"+info+"<br />"+entradilla+"</div>";
                       marker.openInfoWindowHtml(html);
                });
            }else{
                GEvent.addListener(marker, "mouseover", function() {
                       var html = imagen+"<div style='width: 170px'>"+info+"<br /></div>";
                       marker.openInfoWindowHtml(html);
                });
            }
        }else{
            if(entradilla!=undefined){
                GEvent.addListener(marker, "mouseover", function() {
                       var html = "<div style='width: 170px'>"+info+"<br />"+entradilla+"</div>";
                       marker.openInfoWindowHtml(html);
                });
            }else{
                GEvent.addListener(marker, "mouseover", function() {
                       var html = "<div style='width: 170px'>"+info+"<br /></div>";
                       marker.openInfoWindowHtml(html);
                });
            }
        }
        return marker;
    }

    function cargaPois(url){
        var conn = new XHConn();
        if(!conn){
            alert("XMLHTTP not available");
            return false;
        }
        var fnWhenDone = function (oXML){
            if(oXML.readyState == 4){
                xml = oXML.responseXML.documentElement;
                cont = 0;
                if(xml.getElementsByTagName('marcas').length > 0){
                    for(i = 0; i < xml.getElementsByTagName('marcas').length; i++){
                        var marcas = xml.getElementsByTagName('marcas')[i];
                        if(marcas.getElementsByTagName('latitud')[0].firstChild && marcas.getElementsByTagName('longitud')[0] && marcas.getElementsByTagName('info')[0]){
                            var latitud = marcas.getElementsByTagName('latitud')[0].firstChild.data;
                            var longitud = marcas.getElementsByTagName('longitud')[0].firstChild.data;
                            var entradilla = undefined;
                            if(marcas.getElementsByTagName('entradilla')[0]){
                                var entradilla = marcas.getElementsByTagName('entradilla')[0].firstChild.data;
                            }
                            if(! minLongitude){
                                minLongitude = longitud ;
                            }
                            if(! maxLongitude){
                                maxLongitude = longitud ;
                            }
                            if(! minLatitude){
                                minLatitude = latitud ;
                            }
                            if(! maxLatitude){
                                maxLatitude = latitud ;
                            }
                            minLongitude = Math.min(minLongitude, longitud);
                            maxLongitude = Math.max(maxLongitude, longitud);
                            minLatitude = Math.min(minLatitude, latitud);
                            maxLatitude = Math.max(maxLatitude, latitud);
                            var point = new GLatLng(latitud, longitud);

                            var node = marcas.getElementsByTagName("info")[0];
                            var lObj = eval(marcas.getElementsByTagName("info")[0]);
                            if(lObj != null){
                                var larr = lObj.childNodes;
                                for(var iCounter = 0; iCounter< larr.length; iCounter++){
                                      var vv = eval(larr[iCounter]);
                                      if(vv != null) {
                                        var lvalue = vv.nodeValue;
                                        if(lvalue.length > 0){
                                            var info = lvalue.substring(7,lvalue.length-2);
                                        }
                                      }
                                }
                              }
                              var nodeImg = undefined;
                              var lObjImg = undefined;
                              var imagen =  undefined;
                            if(marcas.getElementsByTagName("imagen")[0]){
                                var nodeImg = marcas.getElementsByTagName("imagen")[0];
                                var lObjImg = eval(marcas.getElementsByTagName("imagen")[0]);
                                if(lObjImg != null){
                                    var larrImg = lObjImg.childNodes;
                                    for(var iCounter = 0; iCounter< larrImg.length; iCounter++){
                                          var vvimg = eval(larrImg[iCounter]);
                                          if(vvimg != null) {
                                            var lvalue = vvimg.nodeValue;
                                            if(lvalue.length > 0){
                                                var imagen = lvalue.substring(7,lvalue.length-2);
                                            }
                                          }
                                    }
                                  }
                            }
                              if(info || imagen){
                                  map.addOverlay(createMarkerPto(point, xml.getElementsByTagName('marcas').length, info, entradilla, imagen));
                              }
                        }
                        cont ++;
                    }
                    centerLatitude = minLatitude + (maxLatitude - minLatitude) / 2;
                          centerLongitude = minLongitude + (maxLongitude - minLongitude) / 2;
                       var b = new GLatLngBounds(new GLatLng(minLatitude,minLongitude),  new GLatLng(maxLatitude,maxLongitude));
                       var z = map.getBoundsZoomLevel(b);
                       if(cont > 1){
                           map.setCenter(new GLatLng(centerLatitude, centerLongitude), z);
                       }else{
                           map.setCenter(new GLatLng(latitud, longitud), 5);
                       }
                }
                if (cont==0){
                    // Si no hay marcas definimos un centro fijo para q aparezca el mapa
                    map.setCenter(new GLatLng(39.740986355883564,-3.779296875), 3);
                }
            }
        };
        var sUrl    = url;
        var sMethod = "POST";
        var sVars   = "";
        conn.connect(sUrl, sMethod, sVars, fnWhenDone);
        return true;
    }