function displayHideAnnouncement(announcementID){				
	var currSetting = document.getElementById(announcementID).style.display;
	if (currSetting == 'none') {
		document.getElementById(announcementID).style.display = 'block';
	}				
	else{
		document.getElementById(announcementID).style.display = 'none';
	}
}