خیلی ممنون برای پیگیری تون
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Index</title>
<script src="http://maps.google.com/maps?file=api&v=2&key=ABQIAAAAYLbtKt9f2r1TKgZ873tFBBSTbocS6Fu6VX66t5PjLuR8iUzwxBQCiZFtuB-OPUxekO5_JDo0_uksMg&sensor=false" type="text/javascript"></script>  
 <script type="text/javascript">
 //<![CDATA[
 var map = null;
 var geocoder = null;
 function load() {
 if (GBrowserIsCompatible()) {
 map = new GMap2(document.getElementById("map"));
 map.addControl(new GSmallMapControl());
 geocoder = new GClientGeocoder();
// Here enter your url of ashx file
GDownloadUrl("xml.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("name");
 var address = markers[i].getAttribute("address");
 showAddress(address,name);
}
});
}
}
function showAddress(address, name) {
if (geocoder) {
geocoder.getLatLng(
name+","+address,
function(point) {
if (!point) {
 alert(address + " not found");
} else {
map.setCenter(point, 13);
var marker = createMarker(point, name, address);
map.addOverlay(marker);
}
});
}
}
function createMarker(point, name, address) {
var marker = new GMarker(point);
var html = "<b>" + name + "</b> <br/>" + address;
GEvent.addListener(marker, 'click', function() {
marker.openInfoWindowHtml(html);
});
return marker;
}
 //]]>
</script>
</head>
<body onload="load()" onunload="GUnload()">
<div>
<div id="map" style="width: 1000px; height: 600px"></div>
</div>
</body>
</html>