public void propertyChange(PropertyChangeEvent evt) {
		
		int newId = ((Integer)evt.getNewValue()).intValue();
		
		boolean hasPrev = false;
		Enumeration<Node> nodesEnumer = Runtime.nodes.getNodeEnumeration();
		while(nodesEnumer.hasMoreElements()){
			Node nd = nodesEnumer.nextElement();
			if(nd.ID == newId){
				boolean hasNext = true;
				if(!nodesEnumer.hasMoreElements()){
					hasNext = false;
				}
				this.revalidate(nd, hasPrev, hasNext);
				break;
			}
			hasPrev = true;
		}		
	}