*/
		private boolean isIonChange() {
			
			for (Iterator i=isIonRadio.keySet().iterator(); i.hasNext(); ) {
				String key = (String)i.next();
				
				boolean before = (boolean)isIonRadio.get(key);
				boolean after = ((JRadioButton)ionRadio.get(key)).isSelected();
				
				if (before != after) {
					return true;
				}
			}
			return false;
		}