在AJAX刷新后重新加载GoogleMaps infowindow？

Question

我有这个脚本：

[代码]

function getCoords() {
        $.ajax({
        url: "trainspotter_api.php",
        type: "GET",
        cache : false,
        data: {
            action : "trainset",
            number : '1234'
        },
        dataType: "text",
        success: function(returnedData) {
            var jsondata = jQuery.parseJSON(returnedData);
            //console.log(returnedData);
            var coords = jsondata.Latitude+','+jsondata.Longitude;
            //console.log('Lat: '+jsondata.Latitude);
            var coordsArray = coords.split(",");
            moveMarkerMap(coordsArray[0], coordsArray[1]);
            infoWindow(jsondata.MaterieelDeelNummer,jsondata.GpsDatumTijd,jsondata);
            map.setCenter(marker.getPosition());
            setTimeout(getCoords, 5000);
        },
        done: function(data) {
            // don't works!
        }   
         }); 
    }
    function infoWindow(nummer,GPSdate,snelheid) {
        console.log(nummer,GPSdate,snelheid);
        // create infowindow!
        var infowindow = new google.maps.InfoWindow({
        //content: GPSdate
        content: 'Trainset: '+nummer+': Velocity:'+snelheid+' km/u<br />Last update!:'+GPSdate
        });

        google.maps.event.addListener(marker, 'click', function() {
        infowindow.open(map,marker);
        });
    }

    function moveMarkerMap(lat,lon) {
        console.log('moveMarkerMap geladen!');
        var newLatLang = new google.maps.LatLng(lat,lon);
        map.panTo(newLatLang);
        marker.setPosition(newLatLang);
        //infowindow.open(map,marker);
    }      

[/代码]

如何在每次AJAX请求后刷新infowindow。最新值在 console.log 中是可访问的。但是我如何将它们放在信息窗口中，并在每次请求后刷新它们？