var map;
var localSearch = new GlocalSearch();
var zoom = 12;
var maptype = G_HYBRID_MAP;
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);


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,postcode);
			}
                  else
                  {
			  alert("Postcode not found!");
			}
		    });		
  localSearch.execute(postcode + ", UK");
}

function createInfoMarker(point, address) 
{ 
  var marker = new GMarker(point); 
  GEvent.addListener(marker, "mouseover", function() 
  { 
    marker.openInfoWindowHtml(address); 
  } );
 return marker; 
} 

function placeMarkerAtPoint(point,pc)
{
  var marker = new GMarker(point,icon);
  map.addOverlay(marker);
}

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

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

function mapLoad() 
{
  if (GBrowserIsCompatible()) 
  {
    map = new GMap2(document.getElementById("map"));		
    map.addControl(new GSmallMapControl());
    map.addControl(new GMapTypeControl());
    map.setCenter(new GLatLng(54.93270, -1.37034), 16, G_HYBRID_MAP);
//    usePointFromPostcode('NE11 9DR', setCenterToPoint);
    map.addOverlay(createInfoMarker(new GLatLng(54.93270, -1.37034), "<b>The Mayfield Guest House</b><br>Sea Lane, Seaburn, Sunderland, SR6 8EE"));
//    usePointFromPostcode('NE23 1EB', placeMarkerAtPoint);
  }
}

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);