Google map reset all InfoWindow ?

Question

Hi

I have this code

function initialize() {
    var myLatlng = new google.maps.LatLng(xx.xx, xx.xx);
    var myOptions = {
        zoom: 11,
        center: myLatlng,
        scaleControl: true,
        scrollwheel: true,
        disableDoubleClickZoom: false,
        mapTypeId: google.maps.MapTypeId.TERRAIN
    }

    var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);

    window.mapload = function (myfile) {
            resetAll();
            var bounds = new google.maps.LatLngBounds();
            jQuery.get("trace_" + myfile + ".xml", {}, function(data) {
                        jQuery(data).find("wpt").each(function() {
                                var marker = jQuery(this);
                                var description = marker.find('name').text();
                                var ele = marker.find('ele').text();
                                var latlng = new google.maps.LatLng(parseFloat(marker.attr("lat")),
                                                            parseFloat(marker.attr("lon")));
                                var marker = new google.maps.Marker({position: latlng, map: map, icon: "http://google-maps-icons.googlecode.com/files/racing.png"});

                                var infowindow = new google.maps.InfoWindow({
                                content: description
                                });

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

                                markers.push(marker);
                        });
            });
    }

    window.mapload('motel');
}

// Clear all overlays, reset the array of points
function resetAll() {
    if (flightPathReset) {
      flightPathReset.setMap(null);
    }
    for (var i in markers) {
      markers[i].setMap(null);
    }
    fruits = new Array();
    chart = null;
    data = null;
    mousemarker = null;
    flightPath = null;
    flightPathReset = null;
    dataElev = new Array();
    elevations = new Array();
    markers = new Array();
    bounds = null;
}

google.setOnLoadCallback(initialize);

My problem is to clear from the map all the infowindow from the "resetAll" function if some infowindow are open when I call the "mapload" function with a new xml file !

I can clear all the markers but I didn't find out for the "infowindow" !

Thanks for your help...

Chris