function checkedAll (id, checked) {
	var el = document.getElementById(id);
	for (var i = 0; i < el.elements.length; i++) {
	  el.elements[i].checked = checked;
	}
}

function checkNL(checked) {
	var el = document.zoekformulier.land1;
	for(var i = 0; i < el.length; i++) {
		el[i].checked = checked;
	}
}

function checkBE(checked) {
	var el = document.zoekformulier.land2;
	for(var i = 0; i < el.length; i++) {
		el[i].checked = checked;
	}
}

function divShowHide(divId, showhide) {
	document.getElementById(divId).style.display = showhide;
}

function divShow(divId) {
	document.getElementById(divId).style.display = 'block';
}

function divHide(divId) {
	document.getElementById(divId).style.display = 'none';
}