public void handleSlider(JSlider source){
        if(source.getValueIsAdjusting()){
            int delay = source.getValue();
            if(delay > 0){
                aTimer.setDelay(100*(11-delay));
                if(aTimer.isRunning()){
                    aTimer.restart();
                }    
            }
            else{
            	aTimer.restart();
            }
        }        
    }