new CNETcarousel('simpleCarousel', {
  rotateAction: 'click', slideInterval: 4500, transitionDuration: 700,
  onShowSlide: function(){
    $$('#simpleCarousel div.panel-top a.off img').each(function(button, index){
      button.src = button.src.replace('_on', '_off');
    });
    $$('#simpleCarousel div.panel-top a.selected img').each(function(button, index){
      button.src = button.src.replace('_off','_on');
    });
  }
});