la console java non mi da errori è solo che quando si apre la infowindows non restituisce i valori attribuiti alla variabile!!!!!! tutto qua. di seguito metto lo script completo

<script src="http://maps.google.com/maps?file=api&v=2&key=ABQIAAAAjU0EJWnWPMv7oQ-jjS7dYxTPZYElJSBeBUeMSX5xXgq6lLjHthSAk20WnZ_iuuzhM t60X_ukms-AUg" type="text/javascript"></script>
<script type="text/javascript">
//<![CDATA[
var iconBlue = new GIcon();
iconBlue.image = 'http://labs.google.com/ridefinder/images/mm_20_blue.png';
iconBlue.shadow = 'http://labs.google.com/ridefinder/images/mm_20_shadow.png';
iconBlue.iconSize = new GSize(12, 20);
iconBlue.shadowSize = new GSize(22, 20);
iconBlue.iconAnchor = new GPoint(6, 20);
iconBlue.infoWindowAnchor = new GPoint(5, 1);
var iconRed = new GIcon();
iconRed.image = 'http://labs.google.com/ridefinder/images/mm_20_red.png';
iconRed.shadow = 'http://labs.google.com/ridefinder/images/mm_20_shadow.png';
iconRed.iconSize = new GSize(12, 20);
iconRed.shadowSize = new GSize(22, 20);
iconRed.iconAnchor = new GPoint(6, 20);
iconRed.infoWindowAnchor = new GPoint(5, 1);
var customIcons = [];
customIcons["Pescara"] = iconBlue;
customIcons["Chieti"] = iconRed;
customIcons["Teramo"] = iconBlue;
customIcons["Aquila"] = iconRed;

function load(){
if (GBrowserIsCompatible()){
var map = new GMap2(document.getElementById("map"));
map.addControl(new GSmallMapControl());
map.addControl(new GMapTypeControl());
map.setCenter(new GLatLng(42.431034, 14.112481), 13);
GDownloadUrl("phpsqlajax_genxml2.php", function(data) {
var xml = GXml.parse(data);
var markers = xml.documentElement.getElementsByTagName("marker") ;
for (var i = 0; i < markers.length; i++) {
var name = markers[i].getAttribute("registro");
var address = markers[i].getAttribute("localita");
var type = markers[i].getAttribute("prov");
var foto =markers[i].getAttribute("foto");
var point = new GLatLng(parseFloat(markers[i].getAttribute("lat")),
parseFloat(markers[i].getAttribute("lng")));
var marker = createMarker(point, name, address, type);
map.addOverlay(marker);
}
});
}
}
function createMarker(point, name, address, type) {
var marker = new GMarker(point, customIcons[type]);
var html_name = "("+name+")";

GEvent.addListener(marker, 'click', function() {
marker.openInfoWindowHtml(html_name); });

return marker;
}
//]]>
</script>
</head>
<body onload="load()" onunload="GUnload()">
<div id="map" style="width: 500px; height: 300px"></div>