var map;
var localSearch = new GlocalSearch();
var icon = new GIcon(G_DEFAULT_ICON);
icon.image = "http://www.google.com/mapfiles/marker.png";
//icon.image = "http://www.myeventz.com/equine/App_Themes/Horses/Images/me_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, html) {
	
	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);
				if (callbackFunction != null) {
				    
				    if (html !=null) {
				        callbackFunction(point, html);
				        }
				    else{
				        callbackFunction(point);
				    };				       
				};
			}
			else
			{
			    if (postcode.length>=6){
			        var postcode_prefix = postcode.substring(0,postcode.length-3);			        
			        
			        // call function to center on the beginning of the postcode
			        usePointFromPostcode(postcode_prefix,setCenterToPoint,null);
			    }
			    else
			    {
				alert("Exact postcode not found!");				
				
				map.setCenter(new GLatLng(54.622978,-2.592773), 5, G_NORMAL_MAP);
				};
			};
		});	
		
	localSearch.execute(postcode + ", UK");
}

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

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

function placeMarkerAtPointAndCenter(point,html)
{
    map.setCenter(point,15,G_NORMAL_MAP);
    var marker = createMarker(point,html);
    map.addOverlay(marker);
    
}

function setCenterToPoint(point)
{
	map.setCenter(point, 15);
}

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

function mapLoad() {
	if (GBrowserIsCompatible()) {
		map = new GMap2(document.getElementById("map"));
		
		
		// this puts on the zoom control (GSmallMapControl or GLargeMapControl)
		map.addControl(new GSmallMapControl());
		// this puts on the view type (normal, hybrid or sattelite)
		map.addControl(new GMapTypeControl());
		
		map.addControl(new GOverviewMapControl(new GSize(100,100)));
		// G_NORMAL_MAP, G_SATELLITE_MAP or G_HYBRID_MAP 
		// commented out so that we dont load the map twice
		//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();
	  }
	}
}

addLoadEvent(mapLoad);
addUnLoadEvent(GUnload);