/**
 * Custom button state handler for enabling/disabling button state.
 * Called when the carousel has determined that the previous button
 * state should be changed.
 * Specified to the carousel as the configuration
 * parameter: prevButtonStateHandler
 **/
var handlePrevButtonState = function(type, args) {

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

};

/**
 * Custom button state handler for enabling/disabling button state.
 * Called when the carousel has determined that the next button
 * state should be changed.
 * Specified to the carousel as the configuration
 * parameter: nextButtonStateHandler
 **/
var handleNextButtonState = function(type, args) { 
	var enabling = args[0];
	var rightImage = args[1];
	if(enabling) {
		rightImage.src = "images/img_colla_right.jpg";
	} else {
		// disable
		rightImage.src = "images/img_colla_right.jpg";
	}
};


/**
 * You must create the carousel after the page is loaded since it is
 * dependent on an HTML element (in this case 'mycarousel'.) See the
 * HTML code below.
 **/
var carousel; // for ease of debugging; globals generally not a good idea
var pageLoad = function()
{
    carousel = new YAHOO.extension.Carousel("mycarousel",
        {
            numVisible:        11,
            animationSpeed:    0.45,
            scrollInc:         1,
            navMargin:         17,
            prevElement:     ["prev-arrow", "Poprzednie GP"],
            nextElement:     ["next-arrow", "Nastêpne GP"],
            size:              19,
            prevButtonStateHandler:   handlePrevButtonState,
            nextButtonStateHandler:   handleNextButtonState
        }
    );
};

function showGP(def, img) {

}

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