var map;
var icon = new GIcon();

icon.image = "http://maps.google.com/mapfiles/kml/pal2/icon10.png";
icon.shadow = "http://maps.google.com/mapfiles/kml/pal2/icon10s.png";
icon.iconSize=new GSize(32,32);
icon.shadowSize=new GSize(56,32);
icon.iconAnchor=new GPoint(16,32);
icon.infoWindowAnchor=new GPoint(16,0);
icon.infoShadowAnchor = new GPoint(18, 25);


function usePointFromPostcode(postcode, callbackFunction, infoText) {
  var localSearch = new GlocalSearch();

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

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


function createMarker(point, icon) {

        var marker = new GMarker(point,icon);
        GEvent.addListener(marker, "click", function() {
          marker.openInfoWindowHtml(point.infoText);
        });
        return marker;
      }

function setCenterToPoint(point)
{
	var marker = createMarker(point,icon);
        map.addOverlay(marker);
}

function setCenter(point)
{
        var marker = createMarker(point,icon);
        map.setCenter(point, 10);
        map.addOverlay(marker);
}

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());				
	}
}

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);