function adminLink(){
	document.getElementById('AdminLink').style.visibility = "visible";
}

function adminLinkGone(){
	document.getElementById('AdminLink').style.visibility = "hidden";
}

function alertt(linky){
	var r=confirm("Press a button");
	if (r==true)
	  {
	 	 alert(window.location.href=linky);
	  }
	else
	  {
	  	alert("You pressed Cancel!");
	}
}

function newsprev(){
    document.getElementById('NewsPrev').innerHTML = NieuwsBericht.value;
	document.getElementById('TitlePrev').innerHTML = TitelBericht.value;
	 
	setTimeout('newsprev()', 150);
}

function setValueGB(){
	document.register.gebruikersnaam.value = document.register.initialen.value;
	document.register.gebruikersnaam.value += '.'+document.register.achternaam.value;
}

function setValueWW(){
	document.register.wachtwoord.value = document.register.voornaam.value;
	document.register.wachtwoord.value += ''+document.register.year.value;
}

function whichDayWasThat(date) {
	
	if (!/^[0-9]{1,2}-[0-9]{1,2}-[0-9]{4}$/.test(date)) { 
		alert('het is niet correct ingevuld:\nD-M-YYYY or DD-MM-YYYY.\n\nprobeer het opnieuw');
		return;
	}
		this.date = date.split('-');
	days = new Array('Zondag','Maandag','Dinsdag','Woensdag','Donderdag','Vrijdag','Zaterdag');
	myDate = new Date();
		myDate.setMonth(parseInt(this.date[1]-1),this.date[0]); // 
	myDate.setFullYear(this.date[2]);
	
	alert(this.date.join('-') + ' was-is een ' + days[myDate.getDay()]);
}


//google maps


//google maps

$(function(){
	// Accordion
	$("#accordion").accordion({ header: "h3" });			
});

var location1;
	var location2;
	
	var address1;
	var address2;

	var latlng;
	var geocoder;
	var map;
	
	var distance;
	
	// finds the coordinates for the two locations and calls the showMap() function
	function initialize()
	{
		geocoder = new google.maps.Geocoder(); // creating a new geocode object
		
		// getting the two address values
		address1 = document.getElementById("address1").innerHTML;
		address2 = document.getElementById("address2").innerHTML;
		
		// finding out the coordinates
		if (geocoder) 
		{
			geocoder.geocode( { 'address': address1}, function(results, status) 
			{
				if (status == google.maps.GeocoderStatus.OK) 
				{
					//location of first address (latitude + longitude)
					location1 = results[0].geometry.location;
				} else 
				{
					alert("Geocode was not successful for the following reason: " + status);
				}
			});
			geocoder.geocode( { 'address': address2}, function(results, status) 
			{
				if (status == google.maps.GeocoderStatus.OK) 
				{
					//location of second address (latitude + longitude)
					location2 = results[0].geometry.location;
					// calling the showMap() function to create and show the map 
					showMap();
				} else 
				{
					alert("Geocode was not successful for the following reason: " + status);
				}
			});
		}
	}
		
	// creates and shows the map
	function showMap()
	{
		// center of the map (compute the mean value between the two locations)
		latlng = new google.maps.LatLng((location1.lat()+location2.lat())/2,(location1.lng()+location2.lng())/2);
		
		// set map options
			// set zoom level
			// set center
			// map type
		var mapOptions = 
		{
			zoom: 1,
			center: latlng,
			mapTypeId: google.maps.MapTypeId.HYBRID
		};
		
		// create a new map object
			// set the div id where it will be shown
			// set the map options
		map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);
		
		// show route between the points
		directionsService = new google.maps.DirectionsService();
		directionsDisplay = new google.maps.DirectionsRenderer(
		{
			suppressMarkers: true,
			suppressInfoWindows: true
		});
		directionsDisplay.setMap(map);
		var request = {
			origin:location1, 
			destination:location2,
			travelMode: google.maps.DirectionsTravelMode.DRIVING
		};
		directionsService.route(request, function(response, status) 
		{
			if (status == google.maps.DirectionsStatus.OK) 
			{
				directionsDisplay.setDirections(response);
				distance = "The distance between the two points on the chosen route is: "+response.routes[0].legs[0].distance.text;
				distance += "<br/>The aproximative driving time is: "+response.routes[0].legs[0].duration.text;
				document.getElementById("distance_road").innerHTML = response.routes[0].legs[0].duration.text;
				document.getElementById("distance_direct").innerHTML = response.routes[0].legs[0].distance.text;
			}
		});
		
		// show a line between the two points
		/*var line = new google.maps.Polyline({
			map: map, 
			path: [location1, location2],
			strokeWeight: 7,
			strokeOpacity: 0.8,
			strokeColor: "#FFAA00"
		});*/
		
		// create the markers for the two locations		
		var marker1 = new google.maps.Marker({
			map: map, 
			position: location1,
			title: "First location"
		});
		var marker2 = new google.maps.Marker({
			map: map, 
			position: location2,
			title: "Second location"
		});
		
		// create the text to be shown in the infowindows
		var text1 = '<div id="content">'+
				'<h1 id="firstHeading">First location</h1>'+
				'<div id="bodyContent">'+
				'<p>Coordinates: '+location1+'</p>'+
				'<p>Address: '+address1+'</p>'+
				'</div>'+
				'</div>';
				
		var text2 = '<div id="content">'+
			'<h1 id="firstHeading">Second location</h1>'+
			'<div id="bodyContent">'+
			'<p>Coordinates: '+location2+'</p>'+
			'<p>Address: '+address2+'</p>'+
			'</div>'+
			'</div>';
		
		// create info boxes for the two markers
		var infowindow1 = new google.maps.InfoWindow({
			content: text1
		});
		var infowindow2 = new google.maps.InfoWindow({
			content: text2
		});

		// add action events so the info windows will be shown when the marker is clicked
		google.maps.event.addListener(marker1, 'click', function() {
			infowindow1.open(map,marker1);
		});
		google.maps.event.addListener(marker2, 'click', function() {
			infowindow2.open(map,marker1);
		});
		
		// compute distance between the two points
		var R = 6371; 
		var dLat = toRad(location2.lat()-location1.lat());
		var dLon = toRad(location2.lng()-location1.lng()); 
		
		var dLat1 = toRad(location1.lat());
		var dLat2 = toRad(location2.lat());
		
		var a = Math.sin(dLat/2) * Math.sin(dLat/2) +
				Math.cos(dLat1) * Math.cos(dLat1) * 
				Math.sin(dLon/2) * Math.sin(dLon/2); 
		var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a)); 
		var d = R * c;
		
		document.getElementById("distance_direct").innerHTML = d;
	}
	
	function toRad(deg) 
	{
		return deg * Math.PI/180;
	}