/**
 * @author Rat
 */
/**
 * Image src URLs
 **/
var imageList = [
	
"../administrator/admin/Uploads/Gallery Calendar_Gallery1_waves_Thumb.jpg",
"../administrator/admin/Uploads/Gallery Calendar_Gallery2_hughes_Thumb.jpg",
"../administrator/admin/Uploads/Gallery Calendar_Gallery1_tamworth_Thumb.jpg",
"../administrator/admin/Uploads/Gallery Calendar_Gallery2_hely_Thumb.jpg",
"../administrator/admin/Uploads/Gallery Calendar_Gallery1_generate_Thumb.jpg",
"../administrator/admin/Uploads/Gallery Calendar_Gallery2_ernabella_Thumb.jpg"                ];

/**
 * Since carousel.addItem uses an HTML string to create the interface
 * for each carousel item, this method formats the HTML for an LI.
 **/
var fmtItem = function(imgUrl, url, title) {

      var innerHTML = 
          '<a href="#' + 
          url + 
          '" class="thumbnail" id="thmb' + url + 
		  '" onclick="var myPhoto = new Slideshow(\'' + url + '\'); myPhoto.specificPhoto(\'' + url + '\')"><img src="' + 
          imgUrl +
        '" width="' +
        80 +
        '" height="' +
        60+
        '"/></a>' + 
          title;
  
    return innerHTML;
    
};

/**
 * Custom inital load handler. Called when the carousel loads the initial
 * set of data items. Specified to the carousel as the configuration
 * parameter: loadInitHandler
 **/
var loadInitialItems = function(type, args) {

    var start = args[0];
    var last = args[1]; 

    load(this, start, last);    
};

/**
 * Custom load next handler. Called when the carousel loads the next
 * set of data items. Specified to the carousel as the configuration
 * parameter: loadNextHandler
 **/
var loadNextItems = function(type, args) {    

    var start = args[0];
    var last = args[1]; 
    var alreadyCached = args[2];
    
    if(!alreadyCached) {
        load(this, start, last);
    }
};

/**
 * Custom load previous handler. Called when the carousel loads the previous
 * set of data items. Specified to the carousel as the configuration
 * parameter: loadPrevHandler
 **/
var loadPrevItems = function(type, args) {
    var start = args[0];
    var last = args[1]; 
    var alreadyCached = args[2];
    
    if(!alreadyCached) {
        load(this, start, last);
    }
};

var load = function(carousel, start, last) {
	
carousel.addItem(1, fmtItem(imageList[0], "0", "Making Waves"));
carousel.addItem(2, fmtItem(imageList[1], "1", "Metonymy - look both ways"));
carousel.addItem(3, fmtItem(imageList[2], "2", "Momentum: 18th Tamworth Textile Biennial "));
carousel.addItem(4, fmtItem(imageList[3], "3", "To There & Back "));
carousel.addItem(5, fmtItem(imageList[4], "4", "Generate '10"));
carousel.addItem(6, fmtItem(imageList[5], "5", "Ernabella Arts Inc. "));};



/**
 * 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 = "css/images/left-enabled.gif";        
    } else {
        leftImage.src = "css/images/left-disabled.gif";    
    }
    
};

/**
 * 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 = "css/images/right-enabled.gif";    
    } else {
        rightImage.src = "css/images/right-disabled.gif";
    }
    
};

/**
 * You must create the carousel after the page is loaded since it is
 * dependent on an HTML element (in this case 'dhtml-carousel'.) See the
 * HTML code below.
 **/
var pageLoad = function() 
{
    var carousel = new YAHOO.extension.Carousel("dhtml-carousel", 
        {
            numVisible:        5,
            animationSpeed:    .4,
            animationMethod:   YAHOO.util.Easing.easeBoth,
            scrollInc:         4,
            navMargin:         5,
            size:              6,
            loadInitHandler:   loadInitialItems,
            prevElementID:     "prev-arrow",
            nextElementID:     "next-arrow",
            loadNextHandler:   loadNextItems,
            loadPrevHandler:   loadPrevItems,
            prevButtonStateHandler:   handlePrevButtonState,
            nextButtonStateHandler:   handleNextButtonState
        }
    );
};

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

Behaviour.register(myrules);