var openseat = ""; 
function toggleSeat(objectID) {
		if (objectID != openseat) {
			o = document.getElementById(objectID);
			o.style.display='block';
			if (openseat != "") {
				c = document.getElementById(openseat);
				c.style.display='none';
			}
		}
		openseat = objectID;
		return;
}