var map = null;
var geocoder = null;
var xmlhttp = null;
if (window.XMLHttpRequest) {
  xmlhttp = new XMLHttpRequest();
} else if (window.ActiveXObject) {
  xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}


function load(e) 
    {
      if (GBrowserIsCompatible()) 
      {
        map = new GMap2(document.getElementById("map"));
        geocoder = new GClientGeocoder();  
        placeMarkers(document.getElementById("address").value, e);
        
        GDownloadUrl("data.xml", function(data, responseCode) {
  var xml = GXml.parse(data);
  var markers = xml.documentElement.getElementsByTagName("marker");
  
  if (markers.length > 0)
  {
  point2 = new GLatLng(parseFloat(markers[0].getAttribute("lat")), parseFloat(markers[0].getAttribute("lng")));
  map.setCenter(point2, 13);
  }
  else
  {
  
  geocoder.getLatLng("Paris", function(point){map.setCenter(point, 13)}); 
  }
});       
      }
    }
    
    function placeInXmlFile(point)
    {
                   var xml = null;
      if (window.ActiveXObject)
      {
            xml = new ActiveXObject("Microsoft.XMLDOM");
            xml.async = false;
            xml.load("data.xml");               
      }
      else
      {     
            xml = document.implementation.createDocument("","", null);
            xml.async = false;
            xml.load("data.xml");
      }


      var newmarker =  xml.getElementsByTagName("markers")[0];
      newtag = xml.createElement("marker");
      newmarker.appendChild(newtag);
      
      newtag.setAttribute("lat", point.y);
      newtag.setAttribute("lng", point.x); 
      newtag.setAttribute("address", address.value); 
      
     xmlhttp.abort();
     var xmlToSave = xml.xml || (new XMLSerializer().serializeToString(xml));
     var xmlcode = encodeURIComponent(xmlToSave);
     alert("yes3");
     var url = "Save.php?xml=" + xmlcode;
     xmlhttp.open("GET", url, true);
     xmlhttp.setRequestHeader("Content-Type", "text/xml" );
     xmlhttp.send(null);

     
 }

function placeMarkers(address, e)
{
if (e == "true")
{
geocoder.getLatLng(address, function(point) {
      if (!point) {
        alert(address + " not found");
      } else {
        map.setCenter(point, 13);
       var marker = new GMarker(point);
        map.addOverlay(marker);
        marker.openInfoWindowHtml(address);
        placeInXmlFile(point, address);          
      }
    });
}
GDownloadUrl("data.xml", function(data, responseCode) {
  var xml = GXml.parse(data);
  var markers = xml.documentElement.getElementsByTagName("address");
  for (var i = 0; i < markers.length; i++) {
   
    point2 = new GLatLng(parseFloat(markers[i].getAttribute("lat")),
                            parseFloat(markers[i].getAttribute("lng")));
                            map.setCenter(point2, 13);
    marker2 = new GMarker(point2);
    map.addOverlay(marker2);
    marker2.openInfoWindowHtml(markers[i].getAttribute("address"));
  }

});
}