var map;
var locncircles = [];
var chmarkers =[];
var prev_infowindow=false;
var alldata=[
['C006058','53.759363635','-2.357556262','pingcs.png','Accrington Church'],
['R004010','53.759363635','-2.357556262','pinprs.png','Accrington Reading Room'],
['C006045','53.381842875','-2.35190088','pingcs.png','Altrincham Church'],
['R003994','53.381842875','-2.35190088','pinprs.png','Altrincham Reading Room'],
['R014950','51.081993146','-4.059129273','pinprs.png','Barnstaple Reading Room'],
['C014949','51.081993146','-4.059129273','pingcs.png','Barnstaple Society'],
['C006029','52.1444923','-0.4584413','pingcs.png','Bedford Church'],
['R003973','52.1444923','-0.4584413','pinprs.png','Bedford Reading Room'],
['C006095','54.608779','-5.8674839','pingcs.png','Belfast Church'],
['R004059','54.608779','-5.8674839','pinprs.png','Belfast Reading Room'],
['R021233','51.762367511','-0.570733486','pinprs.png','Berkhamsted Reading Room'],
['C007971','51.762367511','-0.570733486','pingcs.png','Berkhamsted Society'],
['C006085','52.477056401','-1.908318442','pingcs.png','Birmingham Church'],
['C007976','51.4685741','0.0098938','pingcs.png','Blackheath Society'],
['C006040','50.725977179','-1.811692715','pingcs.png','Bournemouth Church'],
['R003987','50.725977179','-1.811692715','pinprs.png','Bournemouth Reading Room'],
['C006080','50.8254993','-0.1521999','pingcs.png','Brighton Church'],
['R004039','50.8254993','-0.1521999','pinprs.png','Brighton Reading Room'],
['R003975','51.4798011','-2.6124097','pinprs.png','Bristol Reading Room'],
['C007960','51.4798011',' 	-2.6124097','pingcs.png','Bristol Society'],
['R005500','50.2163937','-5.2902092','pinprs.png','Camborne Reading Room'],
['C007961','50.2163937','-5.2902092','pingcs.png','Camborne Society'],
['C007993','51.4895783','-3.18671','pingcs.png','Cardiff Society'],
['C007962','54.895649768','-2.927415311','pingcs.png','Carlisle Society'],
['C007967','53.378563901','-2.190921956','pingcs.png','Cheadle Hulme Society'],
['C006043','51.897268617','-2.083272968','pingcs.png','Cheltenham Church'],
['C006034','53.187370107','-2.889185398','pingcs.png','Chester Church'],
['R003979','53.187370107','-2.889185398','pinprs.png','Chester Reading Room'],
['C006065','51.629238809','-0.002644946','pingcs.png','Chingford Church'],
['R004018','51.629238809','-0.002644946','pinprs.png','Chingford Reading Room'],
['C005706','51.3632352','-0.3491765','pingcs.png','Claygate and Esher Church'],
['R004033','51.3632352','-0.3491765','pinprs.png','Claygate and Esher Reading Room'],
['C006066','51.373733','-0.0920206','pingcs.png','Croydon Church'],
['R004019','51.373733','-0.0920206','pinprs.png','Croydon Reading Room'],
['C006037','52.9212982','-1.4851255','pingcs.png','Derby Society'],
['C006076','51.234093283','-0.32655191','pingcs.png','Dorking Church'],
['R004034','51.234093283','-0.32655191','pinprs.png','Dorking Reading Room'],
['C006094','54.157827183','-4.486308703','pingcs.png','Douglas Church'],
['R004058','54.157827183','-4.486308703','pinprs.png','Douglas Reading Room'],
['C006106','53.3265303','-6.2379765','pingcs.png','Dublin Church'],
['R004074','53.3431546','-6.2642345','pinprs.png','Dublin Reading Room'],
['I006081','50.7609647','0.2842971','pingcs.png','Eastbourne Informal Group'],
['C006096','55.953074','-3.205228','pingcs.png','Edinburgh Church'],
['R004060','55.95373','-3.187742','pinprs.png','Edinburgh Reading Room'],
['R023726','51.4313572','-0.5490822','pinprs.png','Egham Reading Room'],
['C006063','51.5298376','-0.1213092','pingcs.png','Eleventh Church London'],
['R004016','51.5298376','-0.1213092','pinprs.png','Eleventh Church London Reading Room'],
['C006038','50.7279441','-3.5262988','pingcs.png','Exeter Church'],
['R003985','50.7279441','-3.5262988','pinprs.png','Exeter Reading Room'],
['R013980','51.216480133','-0.798946509','pinprs.png','Farnham Reading Room'],
['C007981','51.216480133','-0.798946509','pingcs.png','Farnham Society'],
['C006060','51.4996977','-0.193048','pingcs.png','First London Church'],
['R004014','51.4996977','-0.193048','pinprs.png','First London Reading Room'],
['R004031','52.221161935','1.3436023432','pinprs.png','Framlingham Reading Room'],
['C007979','52.221161935','1.3436023432','pingcs.png','Framlingham Society'],
['C005709','51.185520197','-0.617957138','pingcs.png','Godalming Church'],
['R004035','51.185520197','-0.617957138','pinprs.png','Godalming Reading Room'],
['C007959','49.45712','-2.53724','pingcs.png','Guernsey Society'],
['I023590','52.9277266','-4.1334836','pingcs.png','Gwynedd Informal Group'],
['C007988','53.718470123','-1.863115732','pingcs.png','Halifax Society'],
['C006053','52.051927565','-2.705090352','pingcs.png','Hereford Church'],
['R004003','52.051927565','-2.705090352','pinprs.png','Hereford Reading Room'],
['R003976','51.623202996','-0.733983778','pinprs.png','High Wycombe - Maidenhead Reading Room'],
['C006031','51.623202996','-0.733983778','pingcs.png','High Wycombe - Maidenhead Society'],
['C006082','51.065056989','-0.338524435','pingcs.png','Horsham Church'],
['R004042','51.065056989','-0.338524435','pinprs.png','Horsham Reading Room'],
['C006071','53.390536398','-3.181672907','pingcs.png','Hoylake Church'],
['R004024','53.390536398','-3.181672907','pinprs.png','Hoylake Reading Room'],
['C008476','52.946428114','0.4936695558','pingcs.png','Hunstanton Society'],
['C006035','54.330586395','-2.746716393','pingcs.png','Kendal Church'],
['R003981','54.330586395','-2.746716393','pinprs.png','Kendal Reading Room'],
['R004021','51.403617313','-0.304534705','pinprs.png','Kingston upon Thames Reading Room'],
['C006068','51.403617313','-0.304534705','pingcs.png','Kingston upon Thames Society'],
['C007983','52.2901198','-1.5369185','pingcs.png','Leamington Spa Society'],
['C006092','53.844242579','-1.514002025','pingcs.png','Leeds Society'],
['C007969','50.76002806','-1.54038207','pingcs.png','Lymington Society'],
['R004012','53.751556449','-3.028769472','pinprs.png','Lytham St Annes Reading Room'],
['C007974','53.751556449','-3.028769472','pingcs.png','Lytham St Annes Society'],
['R004007','51.275813647','0.5317860389','pinprs.png','Maidstone Reading Room'],
['C006055','51.275813647','0.5317860389','pingcs.png','Maidstone Society'],
['C007970','52.100880075','-2.306250038','pingcs.png','Malvern Society'],
['C006047','53.4779252','-2.2478815','pingcs.png','Manchester Church'],
['R003996','53.4779252','-2.2478815','pinprs.png','Manchester Reading Room'],
['C007838','55.009048687','-1.620823226','pingcs.png','Newcastle upon Tyne Church'],
['R005459','55.009048687','-1.620823226','pinprs.png','Newcastle upon Tyne Reading Room'],
['R004027','52.248193599','-0.876339211','pinprs.png','Northampton Reading Room'],
['C008383','52.248193599','-0.876339211','pingcs.png','Northampton Society'],
['C005707','52.964382859','-1.151994315','pingcs.png','Nottingham Church'],
['R004028','52.964382859','-1.151994315','pinprs.png','Nottingham Reading Room'],
['C006074','51.7583653','-1.2608819','pingcs.png','Oxford Church'],
['R004029','51.7583653','-1.2608819','pinprs.png','Oxford Reading Room'],
['R004036','51.2576415','-0.0027327','pinprs.png','Oxted Reading Room'],
['C006077','51.254365144','-0.012382196','pingcs.png','Oxted Society'],
['C006041','50.7246184','-1.951189041','pingcs.png','Poole Church'],
['R003989','50.7232531','-1.9535626','pinprs.png','Poole Reading Room'],
['R007982','50.8344943','-0.7713516','pinprs.png','Portsmouth and Chichester Reading Room'],
['R004000','50.8198288','-1.0769596','pinprs.png','Portsmouth and Chichester Reading Room'],
['C007982','50.8344943','-0.7713516','pingcs.png','Portsmouth and Chichester Society'],
['C006050','50.8198288','-1.0769596','pingcs.png','Portsmouth and Chichester Society'],
['C006030','51.4546768','-0.966218311','pingcs.png','Reading Church'],
['R003974','51.4546768','-0.966218311','pinprs.png','Reading Reading Room'],
['C006069','51.4609076','-0.3004196','pingcs.png','Richmond Church'],
['R004022','51.4609076','-0.3004196','pinprs.png','Richmond Reading Room'],
['R004049','54.2734372','-0.4026712','pinprs.png','Scarborough Reading Room'],
['C007985','54.2734372','-0.4026712','pingcs.png','Scarborough Society'],
['C006061','51.508406382','-0.193199389','pingcs.png','Second London Church'],
['R003808','51.508433927','-0.193270467','pinprs.png','Second London Reading Room'],
['C006056','51.282479223','0.1947693981','pingcs.png','Sevenoaks Society'],
['C006088','53.379607599','-1.49535522','pingcs.png','Sheffield Society'],
['C006089','53.8314715','-1.783594','pingcs.png','Shipley Church'],
['R004052','53.8314715','-1.783594','pinprs.png','Shipley Reading Room'],
['C006073','53.6430513','-3.0140627','pingcs.png','Southport Society'],
['C006049','53.3888638','-2.1358097','pingcs.png','Stockport Society'],
['C007966','54.5900264','-1.3241224','pingcs.png','Stockton-on-Tees Society'],
['C006084','52.19164048','-1.709541461','pingcs.png','Stratford-upon-Avon Church'],
['R005599','52.19164048','-1.709541461','pinprs.png','Stratford-upon-Avon Reading Room'],
['C006044','51.74632976','-2.216804001','pingcs.png','Stroud Church'],
['R003993','51.74632976','-2.216804001','pinprs.png','Stroud Reading Room'],
['C006086','52.55705685','-1.826279391','pingcs.png','Sutton Coldfield Church'],
['R004046','52.55705685','-1.826279391','pinprs.png','Sutton Coldfield Reading Room'],
['C006078','51.3796086','-0.4333613','pingcs.png','Walton and Weybridge Church'],
['R004037','51.3720664','-0.4560435','pinprs.png','Walton and Weybridge Reading Room'],
['C006054','51.6608748','-0.4104993','pingcs.png','Watford Church'],
['R004004','51.6608748','-0.4104993','pinprs.png','Watford Reading Room'],
['R004005','51.7960365','-0.2112621','pinprs.png','Welwyn Garden City Reading Room'],
['C007972','51.7960365','-0.2112621','pingcs.png','Welwyn Garden City Society'],
['R017125','51.4194675','-0.2126482','pinprs.png','Wimbledon Reading Room'],
['C007977','51.4194675','-0.2126482','pingcs.png','Wimbledon Society'],
['R004002','51.0653188','-1.3176139','pinprs.png','Winchester Reading Room'],
['C006052','51.0653188','-1.3176139','pingcs.png','Winchester Society'],
['C006036','54.376526546','-2.908243914','pingcs.png','Windermere Church'],
['R003982','54.376526546','-2.908243914','pinprs.png','Windermere Reading Room'],
['C006079','51.315478081','-0.553867478','pingcs.png','Woking Church'],
['R004038','51.315478081','-0.553867478','pinprs.png','Woking Reading Room'],
['R004050','53.94491','-1.0738','pinprs.png','York Reading Room'],
['C007986','53.947397087','-1.073534461','pingcs.png','York Society']
	];
function initialize(){
	var myOptions={
		zoom:2,
		mapTypeId: google.maps.MapTypeId.ROADMAP,
		panControl:true,
		zoomControl:true,
		scaleControl:true
	};
	map=new google.maps.Map(document.getElementById('map_canvas'),myOptions);
	map.setZoom(6);
	var pos=new google.maps.LatLng(53.3,-3.9);
	map.setCenter(pos);

	var input = document.getElementById('pac-input');
	var sBox = new google.maps.places.SearchBox(input);
	map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);
	map.addListener('bounds_changed',function(){
		 sBox.setBounds(map.getBounds());
	});

	setMarkers(map,alldata);
//marker.setZIndex(google.maps.Marker.MAX_ZINDEX + 1);
	var sbmarkers = [];
	sBox.addListener('places_changed', function(){
		var places = sBox.getPlaces();
		if (places.length == 0){return;}

		sbmarkers.forEach(function(marker){
			marker.setMap(null);
		});
		sbmarkers = [];
		var bounds = new google.maps.LatLngBounds();
		places.forEach(function(place){
			if (!place.geometry){
				console.log("Returned place contains no geometry");
				return;
			}
			var icon={
				url:place.icon,
				size:new google.maps.Size(15,24),
				origin:new google.maps.Point(0,0),
				anchor:new google.maps.Point(7,24),
				scaledSize:new google.maps.Size(15,24)
			};
			sbmarkers.push(new google.maps.Marker({
				map:map,
				icon:icon,
				title:place.name,
				position:place.geometry.location
			}));
			if (place.geometry.viewport){
				bounds.union(place.geometry.viewport);
			}else{
				bounds.extend(place.geometry.location);
			}

			map.setCenter(place.geometry.location);
			if(typeof locncircles[0] != "undefined"){
				for(var i=0;i<locncircles.length;i++){
					locncircles[i].setMap(null);
				}
			}
	  		locncircles = [];
			var locnCircle = new google.maps.Circle({
				strokeColor:'#0000FF',
				strokeOpacity:0.0,
				strokeWeight:2,
				fillColor:'#0000FF',
				fillOpacity:0.10,
				map:map,
				center:place.geometry.location,
				radius:10 * 1609.3
			});
			locncircles.push(locnCircle);
		});
		map.fitBounds(bounds);
		map.setZoom(9);
	});
}
function setMarkers(map, alldata){
	for (var i in alldata){
		var nme=alldata[i][0];
		var lat=alldata[i][1];
		var lng=alldata[i][2];
		var ptr=alldata[i][3];
		var locn=alldata[i][4];
		setMarker(map,nme,ptr,locn,lat,lng);
	}
}
function setMarker(map,nme,ptr,locn,lat,lng){
	var latlng=new google.maps.LatLng(lat,lng);
	var pinIcon=new google.maps.MarkerImage(ptr,null,null,null,google.maps.Size(15,24));
	var zoomin="<input class='zms lft' type='button' value='Zoom In' onclick='ZoomIn(" + lat + "," + lng + ")'> ";
	var zoomout="&nbsp; <input class='zms rt' type='button' value='Zoom Out' onclick='ZoomOut()'>";
	if(ptr=='pingcs.png'){var zidx=9999}else{var zidx=9998;}
	var infowindow=new google.maps.InfoWindow({position:latlng,content:"<b>" + locn + "</b> <br/><br/>" + zoomin + zoomout});
	var marker=new google.maps.Marker({position:latlng,icon:pinIcon,map:map,title:locn,id:nme,optimized:false,zIndex:zidx})
    chmarkers.push(marker);
	google.maps.event.addListener(marker,"dblclick",function(){
		if(prev_infowindow){prev_infowindow.close();}
	});
	google.maps.event.addListener(marker,'click',function(){
        if(prev_infowindow){prev_infowindow.close();}
		prev_infowindow=infowindow;
		infowindow.open(map,marker);
		infoCallback(nme);
	});
}
function ZoomIn(lat,lng){
	map.setCenter(new google.maps.LatLng(lat,lng));
	map.setZoom(18);
}
function ZoomOut(){
	map.setCenter(new google.maps.LatLng(53.3,-3.9));
	map.setZoom(6);
}
function OpenNewMarker(nme){
	for(var i=0;i<chmarkers.length;i++){
    	if(chmarkers[i].id === nme){
    		chmarkers[i].setZIndex(google.maps.Marker.MAX_ZINDEX + 1);
			google.maps.event.trigger(chmarkers[i],'click');
        	break;
    	}
	}
}
function infoCallback(nme){
	var response;
	var sendurl="gm_htm/" + nme + ".htm";
	var xmlhttp;
	var generated_html="";

	if (window.XMLHttpRequest){
		xmlhttp=new XMLHttpRequest();
	}else{
		xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
	}

	xmlhttp.onreadystatechange=function(){
		if(xmlhttp.readyState==2){
			document.getElementById('showdata').innerHTML='<center>Please wait...<p></center>';
		}
		if(xmlhttp.readyState==3){
			document.getElementById('showdata').innerHTML='<center>Please wait...<p></center>';
		}
		if(xmlhttp.readyState==4 && xmlhttp.status==200){
    		var response=xmlhttp.responseText;
    		document.getElementById('showdata').innerHTML=response;
		}
	};
	xmlhttp.open("GET",sendurl,true);
	xmlhttp.send();
}