function changePage(v){
	document.getElementById('pagina').value = v
	document.tsn.action='index.php';
	document.tsn.submit();
}
/*----------------- trainers ----------------- */
function showTrainer(divID){
	var t = document.getElementById('aantal').value;
	document.getElementById(divID).style.display = 'block'
	for (i=0; i < t; i++){
		var tmp_id = 'pro_id' + i
		if (tmp_id != divID){
			document.getElementById(tmp_id).style.display = 'none'
		}
	}
}
function changeAgenda(v,trainer,agenda,seizoen,jaar){
	document.getElementById('pagina').value = v
	document.tsn.action="index.php?trainer=" + trainer + "&agenda=" + agenda + "&seizoen=" + seizoen  + "&jaar=" + jaar
	document.tsn.submit();
}
function openclose(chkbx,id){
	
	if (document.getElementById(chkbx).checked == true){
		document.getElementById(id).style.display = 'block'
	}else{
		document.getElementById(id).style.display = 'none'
	}
	
}
/*----------------- tennishal/kalender -------- */
function changeDate(v){
	var jj=v.substr(0,4);
	var mm=v.substr(4,2);
	var dd=v.substr(6,2);
	document.getElementById('pagina').value = "page/tennishal/bezetting.php"
	document.tsn.action="index.php?jaar=" + jj + "&maand=" + mm + "&dag=" + dd
	document.tsn.submit();
}
function changeMonth(){
	var jj = document.getElementById('sel_year').value
	var mm = document.getElementById('sel_maand').value
	var dd = 1;
	document.getElementById('pagina').value = "page/tennishal/bezetting.php"
	document.tsn.action="index.php?jaar=" + jj + "&maand=" + mm + "&dag=" + dd
	document.tsn.submit();
}
function change_view(){
	if(document.getElementById('vandaag').style.display == "block"){
		document.getElementById('vandaag').style.display = "none"
		document.getElementById('overzicht').style.display = "block"
	}else{
		document.getElementById('vandaag').style.display = "block"
		document.getElementById('overzicht').style.display = "none"
	}
	location.hash='#top'

}
/*----------------- inschrijven --------------- */
function setPrijs(bedrag){
	document.getElementById('t_bedrag').value = bedrag
}
function verstuur_form(form){
	/*
	var r = verify(form)
	if (r == false) return;

	if(document.getElementById('lesreglement').checked == false){
		alert('Je moet akkoord gaan met het lesreglement');return;
	}
	var tel = document.getElementById('tel').value
	var r1 = checkPhone(tel)
	if (r1 == false) return;

	var reknr = document.getElementById('reknr').value
	var r2 = checkNumber(reknr)
	if (r2 == false) return;

	var email = document.getElementById('email').value
	var r3 = checkMail(email)
	if (r3 == false) return;
*/

	document.inschrijvingen.action='page/formulieren/verstuur.php';
	document.inschrijvingen.submit();
}

function checkNumber(sText){
	var ValidChars = "0123456789";
	var IsNumber=true;
	var Char;
	for (i = 0; i < sText.length && IsNumber == true; i++){
		Char = sText.charAt(i);
		if (ValidChars.indexOf(Char) == -1){IsNumber = false;}
	}
	if (IsNumber==false){
		alert('geen geldig bankrekeningnummer!');
		document.getElementById('reknr').value = ""
	}
	return IsNumber;
}

function checkPhone(sText){
	var ValidChars = "()-0123456789 ";
	var IsNumber=true;
	var Char;
	for (i = 0; i < sText.length && IsNumber == true; i++){
		Char = sText.charAt(i);
		if (ValidChars.indexOf(Char) == -1){IsNumber = false;}
	}
	if (IsNumber==false){
		alert('geen geldig telefoonnummer.!');
		document.getElementById('tel').value = ""
	}
	return IsNumber;
}


function checkMail(a){
	var ok = true
	if(a != ''){
		var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		if (filter.test(a)){;
		}else{
			alert('Het e-mail adres is niet geldig');
			document.getElementById('email').value = ""
			ok = false
		}
	}
	return ok
}
function loadForm(v){
	document.getElementById('pagina').value = 'page/formulieren/formulier.php'
	document.getElementById('form_seizoen').value = v
	document.tsn.action='index.php';
	document.tsn.submit();
}
function sendContact(form){
	var r = verify(form)
	if (r == false) return;
	document.form2.action='page/contact/send_vraag.php';
	document.form2.submit();

}

function jump2Msg(forum_id,topic_id,post_id,p_nr,cat){
	document.getElementById('pagina').value = 'page/posts/posts.php'
	document.getElementById('forum_id').value = forum_id
	document.getElementById('topic_id').value = topic_id
	document.getElementById('post_id').value = post_id
	document.getElementById('pagina_nr').value = p_nr
	document.form1.action="forum/index.php"
	document.form1.submit();
}