window.addEvent('domready', function(){
	var select_b = $('provincie');
	var select = $('land');
	var parent = select;
	while (parent.nodeName != 'FORM') 
		parent = parent.parentNode;
	var form = parent;
	select.addEvent('change', function (e) {
		this.submit();
	}.bindWithEvent(form));
	if (select_b) {
		select_b.addEvent('change', function (e) {
			this.submit();
		}.bindWithEvent(form));
	}
});