Solved!
Because I need only one marker per time, I have a global variable
called currentMarker and a function createMarker.
function vai(){
// prendo il valore dell'opzione che contiene la stringa
"lat|lng"
lo splitto e
// converto i valori in float per creare un oggetto GLatLng da
passare a map.setCenter.
coord=(combodati.options[combodati.selectedIndex].value).split("|");
centro = new GLatLng(parseFloat(coord[0]),
parseFloat(coord[1]));
// creo il marker
if (currentmarker != null) {
if (map.getExtInfoWindow() != null) {
map.closeExtInfoWindow() ;
}
map.removeOverlay(currentmarker);
currentmarker = null; //<======== added
}
currentmarker = createMarker(centro,combodati.options
[combodati.selectedIndex].text) ;
map.addOverlay(currentmarker);
map.setCenter(centro); //<======= placed after instead of
before
addOverlay
}
// funzione per creare un marker, con relativo listner per il click
ed il mouseover
function createMarker(point,text) {
var marker = new GMarker(point, DSAico);
GEvent.addListener(marker,"click", function() {
GDownloadUrl("../dati/wikipage.php?titolo=" + text, function
(doc) {
marker.openExtInfoWindow(map, "usnbWindow",
doc,
{beakOffset: 10, paddingY: 15, paddingX: 15}
);
}
);
});
map.addOverlay(marker);
return marker;
}
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