function change_uitslagen(url) {
	x = document.uitslagen.club.value ;
	y = document.uitslagen.reeks.value ;
	z = document.uitslagen.datum.value ;
	window.location.href = url + "?club=" + x + "&reeks=" + y + "&datum=" + z;
}

function change_kalender(url) {
	x = document.kalender.club.value ;
	y = document.kalender.reeks.value ;
	z = document.kalender.datum.value ;
	window.location.href = url + "?club=" + x + "&reeks=" + y + "&datum=" + z;
}

function change_rangschikking(url) {
	x = document.rangschikking.club.value ;
	y = document.rangschikking.reeks.value ;
	window.location.href = url + "?club=" + x + "&reeks=" + y ;
}

function wissen(url) {
	window.location.href= url ;
}