function quickDag() {
	var frm = document.forms[0];
	var dag = frm.elements['qDag'].value;
	var maand = frm.elements['qMaand'].value;
	var jaar = frm.elements['qJaar'].value;

	document.location.href="?datum=" + jaar + "-" + maand + "-" +dag;
}

function checkContact() {
	var frm = document.forms[0];
	var check = false;

	if(frm.elements['naam'].value == "") {
		alert("Vul uw naam in.");
		frm.elements['naam'].focus();
		return;
	}
	if(frm.elements['adres'].value == "") {
		alert("Vul uw adres in.");
		frm.elements['adres'].focus();
		return;
	}
	if(frm.elements['postcode'].value == "") {
		alert("Vul uw postcode in.");
		frm.elements['postcode'].focus();
		return;
	}
	if(frm.elements['plaats'].value == "") {
		alert("Vul uw woonplaats in.");
		frm.elements['plaats'].focus();
		return;
	}
	if(frm.elements['telefoonnummer'].value == "") {
		alert("Vul uw telefoonnummer in.");
		frm.elements['telefoonnummer'].focus();
		return;
	}
	if(frm.elements['email'].value == "") {
		alert("Vul uw e-mailadres in.");
		frm.elements['email'].focus();
		return;
	}
	for (i = 0; i <frm.elements['wil'].length; i++) {
		if(frm.elements['wil'][0].checked) {
			// vraag
			if(frm.elements['opmerking'].value == "") {
				alert("Vul uw vraag in.");
				frm.elements['opmerking'].focus();
				return;
			}
		} else {
			// contract
		}
	}
	frm.submit();

}

function checkAdvies() {
	var frm = $('frm_advies');
	var check = false;
	var error = "";
	// huis
	for (i = 0; i <frm.elements['inhoud'].length; i++) {
		if(frm.elements['inhoud'][i].checked) {
			check = true;
		}
	}
	if(check == false) {
		$('error_message').innerHTML = "Vul de grootte van uw huis in.";
		$('error_message').style.display = '';
		
		frm.elements['inhoud'][0].focus();
		return;
	}
	check = false;

	for (i = 0; i <frm.elements['isolatie'].length; i++) {
		if(frm.elements['isolatie'][i].checked) {
			check = true;
		}
	}
	if(check == false) {
		$('error_message').innerHTML = "Vul in hoe uw goed huis is geisoleerd.";
		$('error_message').style.display = '';
		frm.elements['isolatie'][0].focus();
		return;
	}
	check = false;

	for (i = 0; i <frm.elements['water'].length; i++) {
		if(frm.elements['water'][i].checked) {
			check = true;
		}
	}
	if(check == false) {
		$('error_message').innerHTML = "Vul in of u ook warm water van de CV-ketel wilt betrekken.";
		$('error_message').style.display = '';
		frm.elements['water'][0].focus();
		return;
	}
	check = false;

	for (i = 0; i <frm.elements['bad'].length; i++) {
		if(frm.elements['bad'][i].checked) {
			check = true;
		}
	}
	if(check == false) {
		$('error_message').innerHTML = "Vul in of u een bad of douche wilt.";
		$('error_message').style.display = '';
		frm.elements['bad'][0].focus();
		return;
	}
	frm.submit();
}

function checkWil() {
	var frm = document.forms[0];
	if(frm.elements['wil'][0].checked) {
		// vraag
		document.getElementById('divVraag').style.display = "block";
		document.getElementById('divContract').style.display = "none";
	}
	if(frm.elements['wil'][1].checked) {
		// vraag
		document.getElementById('divVraag').style.display = "none";
		document.getElementById('divContract').style.display = "block";
	}
}