function selecteer(method) {
	var checkboxes = document.getElementsByName('selectie[]');
	for(i=0; i < checkboxes.length; i++){
		if(checkboxes[i].checked == false) {
			checkboxes[i].checked = true;
		}else{
			checkboxes[i].checked = false;
		}
	}
}

function show(div) {
	var divje = document.getElementById(div);
  if (divje.style.display == "block") {
  	divje.style.display = "none";
  }else{
  	divje.style.display = "block";
  }
}

function openBelveld() {
	var tekst;
	var telefoon;
	var sms;
	
	tekst = document.getElementById('tekst');
	if(tekst.style.display == "none") {
		tekst.style.display = "block";
	}else{
		tekst.style.display = "none";
	}
	
	telefoon = document.getElementById('telefoon');	
	telefoon.style.display = "block";
	sms = document.getElementById('sms');	
	sms.style.display = "block";
}

function verander(stad, prijs, inwoners, bedrijven, link, avatar) {
	document.getElementById('stad').innerHTML = stad;
	document.getElementById('prijs').innerHTML = prijs;
	document.getElementById('inwoners').innerHTML = inwoners;
	document.getElementById('bedrijven').innerHTML = bedrijven;
	document.getElementById('eigenaar').innerHTML = eigenaar;
	document.getElementById('link').innerHTML = "<input type='button' value='Reizen' class='button' onclick=\"location.href='" + link + "'\" />";
	document.getElementById('avatar').innerHTML = "<img src=" + avatar + " />";
	document.getElementById('choose').style.display = "none";
	document.getElementById('informatie').style.display = "block";
}

function partners() {
	div = document.getElementById('partners');
	if(div.style.display == "none") {
		div.style.display = "block";
	}else{
		div.style.display = "none";
	}
}

function aftellen(secs, spanid, dispmin) {
	spantje = document.getElementById(spanid);
	
	if(dispmin) {
		mins = parseInt(secs / 60);
		secs = (secs % 60);
	}else{
		mins = 0;
	}

	teldoor(mins, secs, spantje, dispmin);
}

function teldoor(mins, secs, span, dispmin) {
	stop = 0;
	secs--;
	
	if(!dispmin){
		if(secs==0){
			stop = 1;
		}
	}
	else {
		if(secs==0 && mins==0) {
			refresh();
		}
	}
	
	if(dispmin) {
		if(secs < 0) {
			mins--;
			secs = 59;
		}
	}
	
	if(dispmin) { 
		span.innerHTML = mins + (mins!=1?' minuten en ':' minuut en ') + secs + (secs!=1?' seconden':' seconde');
	}
	else {
		span.innerHTML = secs + ' seconden';
	}

	if(!stop)	setTimeout(function(){teldoor(mins, secs, span, dispmin)}, 1000);
}

function refresh() {
	window.location.reload(true);
}