*/
		private boolean isInstChange() {
			
			if (isInstCheck.size() == 0) {
				return false;
			}
			for (Iterator i=isInstCheck.keySet().iterator(); i.hasNext(); ) {
				String key = (String)i.next();
				boolean before = (boolean)isInstCheck.get(key);
				boolean after = ((JCheckBox)instCheck.get(key)).isSelected();
				if (before != after) {
					return true;
				}
			}
			return false;
		}