// JScript File


/**
 * 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/back_btn.png";    
    } else {
        leftImage.src = "images/back_btn_d.png";    
    }
    
};

/**
 * 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/next_btn.png";
    } else {
        rightImage.src = "images/next_btn_d.png";
    }
    
};




/**
 * 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:        1,
//            animationSpeed:    0.7,
//            scrollInc:         1,
//            navMargin:         0,
//            prevElement:     "prev-arrow",
//            nextElement:     "next-arrow",
//            size:              4,
//			autoPlay:          3000,
//			wrap:true,
//            prevButtonStateHandler:   handlePrevButtonState,
//            nextButtonStateHandler:   handleNextButtonState
//        }
//    );

//};

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