function openSubMenu() {
	
	if($('popup').getStyle('height').toInt()<=0){
		$('popup').effect('height',{
			duration: 1000,
			transition: Fx.Transitions.cubicOut
		}).start(0,237);
	}

}

function closeSubMenu() {

		$('popup').effect('height',{
			duration: 1000,
			transition: Fx.Transitions.cubicIn
		}).start(237,0);

}

window.addEvent('domready', function(){

	var kwicks = $$(".onderwijs_agenda");
	var fx = new Fx.Elements(kwicks, {wait: false, duration: 0, transition: Fx.Transitions.Back.easeOut});
	kwicks.each(function(kwick, i) {

		kwick.addEvent("mouseenter", function(event) {
			setTimeout('openSubMenu();',500);
		});

		/*kwick.addEvent("mouseleave", function(event) {
			closeSubMenu();
		})*/

	});

});