private void loadLifts(){
		File folder = new File(liftPath);
		for(int i=0;i<folder.listFiles().length;i++){
			Lift lift = new Lift(folder.listFiles()[i]);
			if(lift.getWorld()!=null){
				lifts.add(lift);
			//	System.out.println("load " + lifts.get(lifts.size()-1).getLiftID());
			}
		//	System.out.println("load " + lifts.get(lifts.size()-1).getLiftID());					
		}	
	}