var localSearch = new GlocalSearch();
function usePointFromPostcode(postcode, callbackFunction) {
 
  //alert("1");
  localSearch.setSearchCompleteCallback(null, function() {
      //alert("2");
      if (localSearch.results[0]) {    
        var resultLat = localSearch.results[0].lat;
        var resultLng = localSearch.results[0].lng;
		//alert("lat long "+resultLat+" "+resultLng);
        //var point = new GLatLng(resultLat,resultLng);
		var point =resultLat+","+resultLng;
		//alert("point"+point+" | "+resultLat+" "+resultLng);
        callbackFunction(point);
      }else{
        alert("Postcode not found!");
      }
    });  
    
  localSearch.execute(postcode + ", UK");
}
	function createMarker(point,name,html) {
        var marker = new GMarker(point);

        // The info window version with the "to here" form open
        to_htmls[i] = html + '<br>Directions: <b>To here</b> - <a href="javascript:fromhere(' + i + ')">From here</a>' +
           '<form action="javascript:usePointFromPostcode(document.getElementById(\'saddr\').value, getDirectionsFrom)"><fieldset style="width:150px;border:0px;">' +
		'<label for="saddr">Start Location:</label><input type="text" maxlength="40" name="saddr" id="saddr" value="" />' +
		'<input value="Get Directions" type="submit" />' +
		'<input type="hidden" id="daddr" value="'+name+"@"+ point.lat() + ',' + point.lng() + 
		'"/></fieldset></form>';
        // The info window version with the "to here" form open
        from_htmls[i] = html + '<br>Directions: <a href="javascript:tohere(' + i + ')">To here</a> - <b>From here</b>' +
           '<form action="javascript:usePointFromPostcode(document.getElementById(\'daddr\').value, getDirectionsTo)"><fieldset style="width:150px;border:0px;">' +
		'<label for="daddr">End Location:</label><input type="text" maxlength="40" name="daddr" id="daddr" value="" />' +
		'<input value="Get Directions" type="submit" />' +
		'<input type="hidden" id="saddr" value="'+name+"@"+ point.lat() + ',' + point.lng() +
		'"/></fieldset></form>';
        // The inactive version of the direction info
        html = html + '<br>Directions: <a href="javascript:tohere('+i+')">To here</a> - <a href="javascript:fromhere('+i+')">From here</a>';

        GEvent.addListener(marker, "click", function() {
          marker.openInfoWindowHtml(html);
        });
        // save the info we need to use later for the side_bar
        gmarkers[i] = marker;
        htmls[i] = html;
        // add a line to the side_bar html
        side_bar_html += '<a href="javascript:myclick(' + i + ')">' + name + '</a><br>';
        i++;
        return marker;
      }

	  var map = new GMap2(document.getElementById("map")); 
	  
      // ===== request the directions TO =====
      function getDirectionsFrom(point) {
        var daddr = document.getElementById("daddr").value
		var saddr = point;
     	document.getElementById("directions").style.display = "block";
     	gdir.load("from: "+saddr+" to: "+daddr);
      }
	  // ===== request the directions TO =====
      function getDirectionsTo(point) {
        var saddr = document.getElementById("saddr").value
		var daddr = point;
     	document.getElementById("directions").style.display = "block";
     	gdir.load("from: "+saddr+" to: "+daddr);
      }


      // This function picks up the click and opens the corresponding info window
      function myclick(i) {
        gmarkers[i].openInfoWindowHtml(htmls[i]);
      }

      // functions that open the directions forms
      function tohere(i) {
        gmarkers[i].openInfoWindowHtml(to_htmls[i]);
      }
      function fromhere(i) {
        gmarkers[i].openInfoWindowHtml(from_htmls[i]);
      }
	  
	  // === create a GDirections Object ===
      var gdir=new GDirections(map, document.getElementById("directions"));

      
	// === Array for decoding the failure codes ===
      var reasons=[];
      reasons[G_GEO_SUCCESS]            = "Success";
      reasons[G_GEO_MISSING_ADDRESS]    = "Missing Address: The address was either missing or had no value.";
      reasons[G_GEO_UNKNOWN_ADDRESS]    = "Unknown Address:  No corresponding geographic location could be found for the specified address.";
      reasons[G_GEO_UNAVAILABLE_ADDRESS]= "Unavailable Address:  The geocode for the given address cannot be returned due to legal or contractual reasons.";
      reasons[G_GEO_BAD_KEY]            = "Bad Key: The API key is either invalid or does not match the domain for which it was given";
      reasons[G_GEO_TOO_MANY_QUERIES]   = "Too Many Queries: The daily geocoding quota for this site has been exceeded.";
      reasons[G_GEO_SERVER_ERROR]       = "Server error: The geocoding request could not be successfully processed.";
      reasons[G_GEO_BAD_REQUEST]        = "A directions request could not be successfully parsed.";
      reasons[G_GEO_MISSING_QUERY]      = "No query was specified in the input.";
      reasons[G_GEO_UNKNOWN_DIRECTIONS] = "The GDirections object could not compute directions between the points.";

      // === catch Directions errors ===
      GEvent.addListener(gdir, "error", function() {
        var code = gdir.getStatus().code;
        var reason="Code "+code;
        if (reasons[code]) {
          reason = reasons[code]
        } 

        alert("Failed to obtain directions, "+reason);
      });



      // Read the data from example.xml
     /*var request = GXmlHttp.create();
      //request.open("GET", "example.xml", true);
      request.onreadystatechange = function() {
        if (request.readyState == 4) {
          var xmlDoc = request.responseXML;
          // obtain the array of markers and loop through it
          var markers = xmlDoc.documentElement.getElementsByTagName("marker");
          
          for (var i = 0; i < markers.length; i++) {
            // obtain the attribues of each marker
            var lat = parseFloat(markers[i].getAttribute("lat"));
            var lng = parseFloat(markers[i].getAttribute("lng"));
            var point = new GLatLng(lat,lng);
            var html = markers[i].getAttribute("html");
            var label = markers[i].getAttribute("label");
            // create the marker
            var marker = createMarker(point,label,html);
            map.addOverlay(marker);
          }
          // put the assembled side_bar_html contents into the side_bar div
          document.getElementById("side_bar").innerHTML = side_bar_html;
        }
      }
     // request.send(null);*/