var map;
var localSearch = new GlocalSearch();

var icon = new GIcon();
icon.image = "http://www.google.com/mapfiles/marker.png";
icon.shadow = "http://www.google.com/mapfiles/shadow50.png";
icon.iconSize = new GSize(20, 34);
icon.shadowSize = new GSize(37, 34);
icon.iconAnchor = new GPoint(10, 34);

var marker;


function usePointFromPostcode(postcode, callbackFunction) {
  
  localSearch.setSearchCompleteCallback(null, 
    function() {
      
      if (localSearch.results[0])
      {    
        var resultLat = localSearch.results[0].lat;
        var resultLng = localSearch.results[0].lng;
        
        var point = new GLatLng(resultLat,resultLng);
        callbackFunction(point);
      }else{
        alert("Postcode '" + postcode  + "' not found!");
      }
    });  
    
  localSearch.execute(postcode + ", UK");
}

function placeMarkerAtPoint(point)
{
  if(marker)
  {
    map.removeOverlay(marker);
  }
  
  marker = new GMarker(point,{draggable: true});
  
  GEvent.addListener(marker, "dragstart", 
  function() 
  {
    
  }
  );

  GEvent.addListener(marker, "dragend", 
  function() 
  {
    
     var coord = marker.getLatLng();
     jQuery('#x_geocode').attr('value',coord.y.toFixed(6) + ',' + coord.x.toFixed(6));
    
  }
  );
  
  map.addOverlay(marker);
}

function setCenterToPoint(point)
{
  placeMarkerAtPoint(point);
  jQuery('#x_geocode').attr('value',point.lat() + ',' + point.lng());
  map.setCenter(point, 11);
}

function showPointLatLng(point)
{
  alert("Latitude: " + point.lat() + "\nLongitude: " + point.lng());
}

function mapLoad() {
  if (GBrowserIsCompatible()) {
    map = new GMap2(document.getElementById("map"));
    
    
    map.addControl(new GLargeMapControl());
    map.addControl(new GMapTypeControl());
    //map.setCenter(new GLatLng(54.622978,-2.592773), 5, G_HYBRID_MAP);
  }
}

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

function addUnLoadEvent(func) {
  var oldonunload = window.onunload;
  if (typeof window.onunload != 'function') {
    window.onunload = func;
  } else {
    window.onunload = function() {
      oldonunload();
      func();
    }
  }
}

//addLoadEvent(mapLoad);
addUnLoadEvent(GUnload);