var handlePrevButtonState = function(type, args) {

	var enabling = args[0];
	var leftImage = args[1];
	if(enabling) {
		leftImage.src = "images/flechaAtr.jpg";	
	} else {
		leftImage.src = "images/flechaAtrIn.jpg";	
	}
	
};

var handleNextButtonState = function(type, args) {

	var enabling = args[0];
	var rightImage = args[1];
	
	if(enabling) {
		rightImage.src = "images/flechaAde.jpg";
	} else {
		rightImage.src = "images/flechaAdeIn.jpg";
	}
	
};
var carousel; // for ease of debugging; globals generally not a good idea
var pageLoad = function() 
{
	carousel = new YAHOO.extension.Carousel("mycarousel", 
		{
			numVisible:        1,
			animationSpeed:    0.15,
			scrollInc:         1,
			navMargin:         0,
			prevElement:     "prev-arrow",
			nextElement:     "next-arrow",
			size:              3,
			prevButtonStateHandler:   handlePrevButtonState,
			nextButtonStateHandler:   handleNextButtonState
		}
	);

};
YAHOO.util.Event.addListener(window, 'load', pageLoad);