function hide_holiday(holiday_div) {
	var holiday=document.getElementById(holiday_div);
	
	holiday.style.display='none';

	var now = new Date();
	var time = now.getTime();
	// set cookie for 90 days
	time += 14 * 24 * 3600 * 1000;
	now.setTime(time);
	document.cookie = 'hide_holiday_mess=' + true + '; expires=' + now.toUTCString() + '; path=/';

	}