/* - - - - - - - - - - - - - - - - - - - - - - -
 JavaScript
 domenica 1 giugno 2008 9.49.56
 HAPedit 3.0.11.102
 - - - - - - - - - - - - - - - - - - - - - - - */

 /**
 * Image src URLs
 */
var imageList = [
         "/images/screenshot1.jpg",
         "/images/screenshot2.jpg",
         "/images/s3.png",
         "/images/s4.png"
         ];

var lastRan = -1;

var fmtItem = function(imgUrl, url, title, index) {

    var innerHTML = 
      '<a id="dhtml-carousel-a-'+index+'" href="' + 
      url + 
      '"><img id="dhtml-carousel-img-' + index + '" src="' + 
      imgUrl +
    '" width="' +
    542 +
    '" height="' +
    304 +
    '"/>' + 
      title + 
      '<\/a>';
  
  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) {
  for(var i=start;i<=last;i++) {
    var liItem = carousel.addItem(i, fmtItem(imageList[i], "#", "Number " + i, i));
/*
    // If you want to add handlers for mouse over, mouse out or other events,
    // here is the pattern
    YAHOO.util.Event.addListener(liItem, "mouseover", function(e) {
    //console.log("mouseover>>"+this.id);
    });
    YAHOO.util.Event.addListener(liItem, "mouseout", function(e) {
      //console.log("mouseout<<"+this.id);
    });
*/
  }
}

/**
 * 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 = "/uploads/assets/rewind.png";
  } else {
    leftImage.src = "/uploads/assets/rewind_disabled.png";
  }
  
};

var carousel; // for ease of debugging; globals generally not a good idea

/**
 * 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() 
{
  carousel = new YAHOO.extension.Carousel("dhtml-carousel", 
    {
      numVisible:        1,
      animationSpeed:   0.8,
      scrollInc:         1,
      navMargin:         0,
      prevElement:     "prev-arrow",
      nextElement:     "next-arrow",
      loadInitHandler:   loadInitialItems,
      loadNextHandler:   loadNextItems,
      loadPrevHandler:   loadPrevItems,
      prevButtonStateHandler:   handlePrevButtonState,
      autoPlay: 10000,
      size:15,
      wrap:false
    }
  );
};


/**
 * Illustrates stop autoplay
 */
var stopAutoPlay = function(e) {
  //YAHOO.util.Dom.get("status").innerHTML = "Auto Play Stopped!";
  carousel.stopAutoPlay();
};

/**
 * Illustrates start autoplay
 */
var startAutoPlay = function(e) {
  //YAHOO.util.Dom.get("status").innerHTML = "Auto Play Started!";
  carousel.startAutoPlay(2000);
};