var 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,Count)
{
    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);
				setCenterToPoint(point);
				callbackFunction(point,Count);
			}else{
				//alert("Postcode not found!");
			}
		});	
		
	localSearch.execute(postcode + ", UK");
	return false;
}


function placeMarkerAtPoint(p,c)
{
var icon = new GIcon();
icon.image = "/images/lightblue"+c+".png";
//icon.iconSize = new GSize(20, 34);
//icon.shadowSize = new GSize(37, 34);
//icon.iconAnchor = new GPoint(10, 34);

icon.iconSize = new GSize(17, 19);
icon.shadowSize = new GSize(27, 19);
icon.iconAnchor = new GPoint(8, 19);

var marker = new GMarker(p,icon);
map.addOverlay(marker);
}

function setCenterToPoint(point)
{
	map.setCenter(point, 10);
}


function mapLoad() {
	if (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_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);


function distance(lat1, lon1, lat2, lon2, unit) 
{
	var radlat1 = Math.PI * lat1/180
	var radlat2 = Math.PI * lat2/180
	var radlon1 = Math.PI * lon1/180
	var radlon2 = Math.PI * lon2/180
	var theta = lon1-lon2
	var radtheta = Math.PI * theta/180
	var dist = Math.sin(radlat1) * Math.sin(radlat2) + Math.cos(radlat1) * Math.cos(radlat2) * Math.cos(radtheta);
	dist = Math.acos(dist)
	dist = dist * 180/Math.PI
	dist = dist * 60 * 1.1515
	if (unit=="K") { dist = dist * 1.609344 }
	if (unit=="N") { dist = dist * 0.8684 }
	return dist
}