var map;
var localSearch = new GlocalSearch();
var point;

// default zoom
var gZoom = 15;

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

function placeMarkerAndCenterToPoint(point) {
  placeMarkerAtPoint(point);
  setCenterToPoint(point);
}

function placeMarkerAtPoint(point)
{
  var marker = new GMarker(point);
  map.addOverlay(marker);

  GEvent.addListener(marker, "click", function() {
    marker.openInfoWindowHtml(myHtml);
  })

  marker.openInfoWindowHtml(myHtml);
}



function setCenterToPoint(point)
{
  var centerPoint = new GLatLng(point.lat() + 0.002, point.lng() + 0.002); // Offset to allow for the overlay height
  map.setCenter(centerPoint, gZoom);
}

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

function mapLoad() {
	if (GBrowserIsCompatible()) {
		map = new GMap2(document.getElementById("google_map"));

		map.addControl(new GLargeMapControl());
		map.addControl(new GMapTypeControl());
		map.setCenter(new GLatLng(54.622978,-2.592773), 5, G_NORMAL_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();
	  }
	}
}

addUnLoadEvent(GUnload);