// Licensed under a Creative Commons Attribution 3.0 License. - http://www.queness.com/

$(document).ready(function() {		
	
	//Execute the slideShow, set 4 seconds for each images
	slideShow(4500);

});

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').animate({bottom:-70}, 300, function () {
			//Display the content
			$('#slideshow-caption h3').html(title);
			$('#slideshow-caption p').html(desc);				
			$('#slideshow-caption').animate({bottom:0}, 500);	
	});		

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

}





$(document).ready(function() {

	//Speed of the slideshow
	var speed = 5000;
	
	//You have to specify width and height in #slider CSS properties
	//After that, the following script will set the width and height accordingly
	$('#mask-gallery, #gallery li').width($('#slider').width());	
	$('#gallery').width($('#slider').width() * $('#gallery li').length);
	$('#mask-gallery, #gallery li, #mask-excerpt').height($('#slider').height());
	//Assign a timer, so it will run periodically
	var run = setInterval('newsscoller(0)', speed);	
	
	$('#gallery li:first, #excerpt li:first').addClass('selected');
        $('#mask-excerpt').css('marginTop', $('#gallery li').height()-$('#excerpt li:first').height());

	//Pause the slidershow with clearInterval
	$('#btn-pause').click(function () {
		clearInterval(run);
		return false;
	});

	//Continue the slideshow with setInterval
	$('#btn-play').click(function () {
		run = setInterval('newsscoller(0)', speed);	
		return false;
	});
	
	//Next Slide by calling the function
	$('#btn-next').click(function () {
		newsscoller(0);	
		return false;
	});

	//Previous slide by passing prev=1
	$('#btn-prev').click(function () {
		newsscoller(1);	
		return false;
	});
	
	//Mouse over, pause it, on mouse out, resume the slider show
	$('#slider, #sliderbuttons').hover(
	
		function() {
			clearInterval(run);
		}, 
		function() {
			run = setInterval('newsscoller(0)', speed);	
		}
	); 	
	
});


function newsscoller(prev) {

	//Get the current selected item (with selected class), if none was found, get the first item
	var current_image = $('#gallery li.selected').length ? $('#gallery li.selected') : $('#gallery li:first');
	var current_excerpt = $('#excerpt li.selected').length ? $('#excerpt li.selected') : $('#excerpt li:first');
	

	//if prev is set to 1 (previous item)
	if (prev) {
		
		//Get previous sibling
		var next_image = (current_image.prev().length) ? current_image.prev() : $('#gallery li:last');
		var next_excerpt = (current_excerpt.prev().length) ? current_excerpt.prev() : $('#excerpt li:last');
	
	//if prev is set to 0 (next item)
	} else {
		
		//Get next sibling
		var next_image = (current_image.next().length) ? current_image.next() : $('#gallery li:first');
		var next_excerpt = (current_excerpt.next().length) ? current_excerpt.next() : $('#excerpt li:first');
	}
        
        $('#mask-excerpt').animate({marginTop: $('#gallery li').height()-next_excerpt.height()}, 100, 0, function (){
         //clear the selected class
         $('#excerpt li, #gallery li').removeClass('selected');

         //reassign the selected class to current items
         next_image.addClass('selected');
         next_excerpt.addClass('selected');

         //Scroll the items
         $('#mask-excerpt').scrollTo(next_excerpt, 800);					
         $('#mask-gallery').scrollTo(next_image, 800);		
        });
        
	
}