/* 
* jQuery Photo Slide Show with Slick Caption Tutorial Revisited 
* 
* http://www.queness.com/post/1450/jquery-photo-slide-show-with-slick-caption-tutorial-revisited
*
*/

function slideShow(speed) {

   //append a LI item to the UL list for displaying caption
   $('ul.slideshow').append('<li id="slideshow-caption" class="caption"><div class="slideshow-caption-container"><h3></h3><p></p></div></li>');

   //Set the opacity of all images to 0
   $('ul.slideshow li').css({opacity: 0.0});

   //Get the first image and display it (set it to full opacity)
   $('ul.slideshow li:first').css({opacity: 1.0});

   //Get the caption of the first image from REL attribute and display it
   $('#slideshow-caption h3').html($('ul.slideshow a:first').find('img').attr('title'));
   $('#slideshow-caption p').html($('ul.slideshow a:first').find('img').attr('alt'));

   //Display the caption
   $('#slideshow-caption').css({opacity: 0.7, bottom:0});

   //Call the gallery function to run the slideshow
   var timer = setInterval('gallery()',speed);

   //pause the slideshow on mouse over
   $('ul.slideshow').hover(
      function () {
         clearInterval(timer);
      },
      function () {
         timer = setInterval('gallery()',speed);
      }
   );

}

function gallery() {


   //if no IMGs have the show class, grab the first image
   var current = ($('ul.slideshow li.show')?  $('ul.slideshow li.show') : $('#ul.slideshow li:first'));

   //Get next image, if it reached the end of the slideshow, rotate it back to the first image
   var next = ((current.next().length) ? ((current.next().attr('id') == 'slideshow-caption')? $('ul.slideshow li:first') :current.next()) : $('ul.slideshow li:first'));

   //Get next image caption
   var title = next.find('img').attr('title');
   var desc = next.find('img').attr('alt');

   //Set the fade in effect for the next image, show class has higher z-index
   next.css({opacity: 0.0}).addClass('show').animate({opacity: 1.0}, 1000);

   //Hide the caption first, and then set and display the caption
   $('#slideshow-caption').slideToggle(300, function () {
      $('#slideshow-caption h3').html(title);
      $('#slideshow-caption p').html(desc);
      $('#slideshow-caption').slideToggle(500);
   });

   //Hide the current image
   current.animate({opacity: 0.0}, 1000).removeClass('show');

}