window.addEvent('domready', function(){
	
	var eventsSii = true,
		eventsUniversity = true,
		eventsConference = true;

	$('event_sii_check').addEvent('click', function(e){
		if (eventsSii) {
			$$('div.event_sii').each(function(currentp){
				currentp.setStyle('display','none');
			});
			eventsSii = false;
		} else {
			$$('div.event_sii').each(function(currentp){
				currentp.setStyle('display','block');
			});
			eventsSii = true;
		}
	});
	
	$('event_university_check').addEvent('click', function(e){
		if (eventsUniversity) {
			$$('div.event_university').each(function(currentp){
				currentp.setStyle('display','none');
			});
			eventsUniversity = false;
		} else {
			$$('div.event_university').each(function(currentp){
				currentp.setStyle('display','block');
			});
			eventsUniversity = true;
		}
	});
});