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 not found!");
						      }
					  });
    
    localSearch.execute(postcode + ", UK");
}

function placeMarkerAtPoint(point)
{
    if ( marker ) {
	map.removeOverlay(marker);
    }
    marker = new GMarker(point,icon);
     map.setCenter(point,11); 
    map.addOverlay(marker);
    $('latlong').value=point.lat() + "," + point.lng();
}

function setCenterToPoint(point)
{
    map.setCenter(point, 17);
}

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

function mapLoad() {    
    if (document.getElementById("map") && 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);