var Carousel = function(carouselElementID, carouselCfg) {
 		this.init(carouselElementID, carouselCfg);
};

Carousel.prototype = {
   init: function(id, cfg) {
      var config = {
			numVisible:        3,
			animationSpeed:    0.4,
			scrollInc:         3,
			navMargin:         40,
			size:              20,
         prevButtonStateHandler: this.handlePrevButtonState,
         nextButtonStateHandler: this.handleNextButtonState
      };

      for (var key in cfg) {
         if (!cfg.hasOwnProperty(key)) { continue; }
         config[key] = cfg[key];
      }

      this.carousel = new YAHOO.extension.Carousel(id, config);

   },

   handlePrevButtonState: function(type, args) {
		var enabling = args[0];
		var leftImage = args[1];
		if(enabling) {
			leftImage.src = path + "Img/Fx/img-seta-esq.png";	
		} else {
			leftImage.src = path + "Img/Fx/img-seta-escura-esq.png";
		}
   },

   handleNextButtonState: function(type, args) {
		var enabling = args[0];
		var rightImage = args[1];

		if(enabling) {
			rightImage.src = path + "Img/Fx/img-seta-dir.png";	
		} else {
			rightImage.src = path + "Img/Fx/img-seta-escura-dir.png";
		}
	}
};