var map;
    var gdir;
    var geocoder = null;
    var addressMarker;
 
    function initialize() {
		
		if(document.getElementById("map_canvas")==null) return;
		
		if (GBrowserIsCompatible()) { 
		
		var point = new GLatLng(53.9467388391495, -1.36861056089401);
		
		map = new GMap2(document.getElementById("map_canvas"));
		map.setCenter(point, 15);
		map.setUIToDefault();
		map.enableRotation();
		
		map.addOverlay(new GMarker(point));
		
		gdir = new GDirections(map, document.getElementById("directions"));
		GEvent.addListener(gdir, "addoverlay", onGDirectionsLoad);
		GEvent.addListener(gdir, "error", handleErrors);
      }
    }
    
    function setDirections(fromAddress, toAddress, locale) {
		
		if(fromAddress=='')
		{
			alert("Please enter the postcode or address you'll be departing from");
			return;	
		}
		
		/*
		directions.load('from: 52.15,-75.38 to: 52.25,-75.63', {getPolyline:true}); 
		*/
		
      	gdir.load("from: " + fromAddress + " to: 53.9467388391495, -1.36861056089401",{ "locale": locale });
    }
 
    function handleErrors(){
   if (gdir.getStatus().code == G_GEO_UNKNOWN_ADDRESS)
     alert("Your location could not be found, please enter either a valid UK postcode or at least a house number, street name and town.");
   
   else if (gdir.getStatus().code == G_GEO_SERVER_ERROR)
     alert("A geocoding or directions request could not be successfully processed, yet the exact reason for the failure is not known.\n Error code: " + gdir.getStatus().code);
   else if (gdir.getStatus().code == G_GEO_MISSING_QUERY)
     alert("The HTTP q parameter was either missing or had no value. For geocoder requests, this means that an empty address was specified as input. For directions requests, this means that no query was specified in the input.\n Error code: " + gdir.getStatus().code);
   else if (gdir.getStatus().code == G_GEO_BAD_KEY)
     alert("The given key is either invalid or does not match the domain for which it was given. \n Error code: " + gdir.getStatus().code);
   else if (gdir.getStatus().code == G_GEO_BAD_REQUEST)
     alert("A directions request could not be successfully parsed.\n Error code: " + gdir.getStatus().code);
   else alert("An unknown error occurred.");
    }
 
  function onGDirectionsLoad(){ 
   var poly = gdir.getPolyline();
   if (poly.getVertexCount() > 100) {
     //alert("This route has too many vertices");
     //return;
   }
   var baseUrl = "http://maps.google.com/staticmap?";
 
   var params = [];
   var markersArray = [];
   markersArray.push(poly.getVertex(0).toUrlValue(5) + ",greena");
   markersArray.push(poly.getVertex(poly.getVertexCount()-1).toUrlValue(5) + ",greenb");
   params.push("markers=" + markersArray.join("|"));
 
   var polyParams = "rgba:0x0000FF80,weight:5|";
   var polyLatLngs = [];
   for (var j = 0; j < poly.getVertexCount(); j++) {
     polyLatLngs.push(poly.getVertex(j).lat().toFixed(5) + "," + poly.getVertex(j).lng().toFixed(5));
   }
   params.push("path=" + polyParams + polyLatLngs.join("|"));
   params.push("size=300x300");
   params.push("key=ABQIAAAAjU0EJWnWPMv7oQ-jjS7dYxSPW5CJgpdgO_s4yyMovOaVh_KvvhSfpvagV18eOyDWu7VytS6Bi1CWxw");
 
   baseUrl += params.join("&");
 
   var extraParams = [];
   extraParams.push("center=" + map.getCenter().lat().toFixed(6) + "," + map.getCenter().lng().toFixed(6));
   extraParams.push("zoom=" + map.getZoom());
   addImg(baseUrl + "&" + extraParams.join("&"), "staticMapOverviewIMG");
 
   var extraParams = [];
   extraParams.push("center=" + poly.getVertex(0).toUrlValue(5));
   extraParams.push("zoom=" + 15);
   addImg(baseUrl + "&" + extraParams.join("&"), "staticMapStartIMG");
 
   var extraParams = [];
   extraParams.push("center=" + poly.getVertex(poly.getVertexCount()-1).toUrlValue(5));
   extraParams.push("zoom=" + 15);
   addImg(baseUrl + "&" + extraParams.join("&"), "staticMapEndIMG");
}
 
function addImg(url, id) {
 var img = document.createElement("img");
 img.src = url;
 document.getElementById(id).innerHTML = "";
 document.getElementById(id).appendChild(img);
}