/**
* By Anders Ekdahl
* Changes by Arjan Pat
* Version: 1.2.4
*/
(function ($) {
	$.fn.ApGallery = function (options) {
		var defaults = { loader_image: 'Images/loader.gif',
			start_at_index: 0,
			description_wrapper: false,
			descriptions: false,
			thumb_opacity: 0.7,
			animate_first_image: false,
			animation_speed: 400,
			width: false,
			height: false,
			display_next_and_prev: true,
			display_back_and_forward: true,
			scroll_jump: 0, // If 0, it jumps the width of the container
			slideshow: {
				enable: true,
				autostart: false,
				speed: 5000,
				start_label: 'Start',
				stop_label: 'Stop',
				stop_on_scroll: true,
				countdown_prefix: '(',
				countdown_sufix: ')',
				onStart: false,
				onStop: false
			},
			effect: 'slide-hori', // 'slide-hori' or 'slide-vert', 'fade', or 'resize', 'none'
			enable_keyboard_move: true,
			cycle: true,
			callbacks: {
				init: false,
				afterImageVisible: false,
				beforeImageVisible: false
			}
		};
		var settings = $.extend(false, defaults, options);
		if (options && options.slideshow) {
			settings.slideshow = $.extend(false, defaults.slideshow, options.slideshow);
		};
		if (!settings.slideshow.enable) {
			settings.slideshow.autostart = false;
		};
		var galleries = [];
		$(this).each(function () {
			var gallery = new ApGallery(this, settings);
			galleries[galleries.length] = gallery;
		});
		// Sorry, breaking the jQuery chain because the gallery instances
		// are returned so you can fiddle with them
		return galleries;
	};

	function VerticalSlideAnimation(img_container, direction, desc) {
		var current_top = parseInt(img_container.css('top'), 10);
		if (direction == 'left') {
			var old_image_top = '-' + this.image_wrapper_height + 'px';
			img_container.css('top', this.image_wrapper_height + 'px');
		} else {
			var old_image_top = this.image_wrapper_height + 'px';
			img_container.css('top', '-' + this.image_wrapper_height + 'px');
		};
		if (desc) {
			desc.css('bottom', '-' + desc[0].offsetHeight + 'px');
			desc.animate({ bottom: 0 }, this.settings.animation_speed * 2);
		};
		if (this.current_description) {
			this.current_description.animate({ bottom: '-' + this.current_description[0].offsetHeight + 'px' }, this.settings.animation_speed * 2);
		};
		return { old_image: { top: old_image_top },
			new_image: { top: current_top }
		};
	};

	function HorizontalSlideAnimation(img_container, direction, desc) {
		var current_left = parseInt(img_container.css('left'), 10);
		if (direction == 'left') {
			var old_image_left = '-' + this.image_wrapper_width + 'px';
			img_container.css('left', this.image_wrapper_width + 'px');
		} else {
			var old_image_left = this.image_wrapper_width + 'px';
			img_container.css('left', '-' + this.image_wrapper_width + 'px');
		};
		if (desc) {
			desc.css('bottom', '-' + desc[0].offsetHeight + 'px');
			desc.animate({ bottom: 0 }, this.settings.animation_speed * 2);
		};
		if (this.current_description) {
			this.current_description.animate({ bottom: '-' + this.current_description[0].offsetHeight + 'px' }, this.settings.animation_speed * 2);
		};
		return { old_image: { left: old_image_left },
			new_image: { left: current_left }
		};
	};

	function ResizeAnimation(img_container, direction, desc) {
		var image_width = img_container.width();
		var image_height = img_container.height();
		var current_left = parseInt(img_container.css('left'), 10);
		var current_top = parseInt(img_container.css('top'), 10);
		img_container.css({ width: 0, height: 0, top: this.image_wrapper_height / 2, left: this.image_wrapper_width / 2 });
		return { old_image: { width: 0,
			height: 0,
			top: this.image_wrapper_height / 2,
			left: this.image_wrapper_width / 2
		},
			new_image: { width: image_width,
				height: image_height,
				top: current_top,
				left: current_left
			}
		};
	};

	function FadeAnimation(img_container, direction, desc) {
		img_container.css('opacity', 0.0);
		return { old_image: { opacity: 0.0 },
			new_image: { opacity: 1.0 }
		};
	};

	// Sort of a hack, will clean this up... eventually
	function NoneAnimation(img_container, direction, desc) {
		img_container.css('opacity', 0);
		return { old_image: { opacity: 0 },
			new_image: { opacity: 1 },
			speed: 0
		};
	};

	function ApGallery(wrapper, settings) {
		this.init(wrapper, settings);
	};
	ApGallery.prototype = {
		// Elements
		wrapper: false,
		image_wrapper: false,
		gallery_info: false,
		nav: false,
		loader: false,
		preloads: false,
		thumbs_wrapper: false,
		scroll_back: false,
		scroll_forward: false,
		next_link: false,
		prev_link: false,

		slideshow: false,
		image_wrapper_width: 0,
		image_wrapper_height: 0,
		current_index: 0,
		current_image: false,
		current_description: false,
		nav_display_width: 0,
		settings: false,
		images: false,
		in_transition: false,
		animations: false,
		init: function (wrapper, settings) {
			var context = this;
			this.wrapper = $(wrapper);
			this.settings = settings;
			this.setupElements();
			this.setupAnimations();
			if (this.settings.width) {
				this.image_wrapper_width = this.settings.width;
				this.image_wrapper.width(this.settings.width);
				this.wrapper.width(this.settings.width);
			} else {
				this.image_wrapper_width = this.image_wrapper.width();
			};
			if (this.settings.height) {
				this.image_wrapper_height = this.settings.height;
				this.image_wrapper.height(this.settings.height);
			} else {
				this.image_wrapper_height = this.image_wrapper.height();
			};
			this.nav_display_width = this.nav.width();
			this.current_index = 0;
			this.current_image = false;
			this.current_description = false;
			this.in_transition = false;
			this.findImages();
			if (this.settings.display_next_and_prev) {
				this.initNextAndPrev();
			};
			// The slideshow needs a callback to trigger the next image to be shown
			// but we don't want to give it access to the whole gallery instance
			var nextimage_callback = function (callback) {
				return context.nextImage(callback);
			};
			this.slideshow = new ApGallerySlideshow(nextimage_callback, this.settings.slideshow);
			this.controls.append(this.slideshow.create());
			if (this.settings.slideshow.enable) {
				this.slideshow.enable();
			} else {
				this.slideshow.disable();
			};
			if (this.settings.display_back_and_forward) {
				this.initBackAndForward();
			};
			if (this.settings.enable_keyboard_move) {
				this.initKeyEvents();
			};
			var start_at = parseInt(this.settings.start_at_index, 10);
			if (window.location.hash && window.location.hash.indexOf('#ap-image') === 0) {
				start_at = window.location.hash.replace(/[^0-9]+/g, '');
				// Check if it's a number
				if ((start_at * 1) != start_at) {
					start_at = this.settings.start_at_index;
				};
			};

			this.loading(true);
			this.showImage(start_at,
        function () {
        	// We don't want to start the slideshow before the image has been
        	// displayed
        	if (context.settings.slideshow.autostart) {
        		context.preloadImage(start_at + 1);
        		context.slideshow.start();
        	};
        }
      );
			this.fireCallback(this.settings.callbacks.init);
		},
		setupAnimations: function () {
			this.animations = {
				'slide-vert': VerticalSlideAnimation,
				'slide-hori': HorizontalSlideAnimation,
				'resize': ResizeAnimation,
				'fade': FadeAnimation,
				'none': NoneAnimation
			};
		},
		setupElements: function () {
			this.controls = this.wrapper.find('.ap-controls');
			this.gallery_info = $('<div class="ap-info"></div>');
			this.controls.append(this.gallery_info);
			this.image_wrapper = this.wrapper.find('.ap-image-wrapper');
			this.image_wrapper.empty();
			this.nav = this.wrapper.find('.ap-nav');
			this.thumbs_wrapper = this.nav.find('.ap-thumbs');
			this.image_descrs = this.wrapper.find('.ap-image-descriptions');

			this.preloads = $('<div class="ap-preloads"></div>');
			this.loader = $('<img class="ap-loader" src="' + this.settings.loader_image + '">');
			this.image_wrapper.append(this.loader);
			this.loader.hide();
			$(document.body).append(this.preloads);
		},
		loading: function (bool) {
			if (bool) {
				this.loader.show();
			} else {
				this.loader.hide();
			};
		},
		addAnimation: function (name, fn) {
			if ($.isFunction(fn)) {
				this.animations[name] = fn;
			};
		},
		findImages: function () {
			var context = this;
			this.images = [];
			var thumb_wrapper_width = 0;
			var blocker_running = 0;
			var thumbs_loaded = 0;
			var thumbs = this.thumbs_wrapper.find('a');
			var thumb_count = thumbs.length;
			if (this.settings.thumb_opacity < 1) {
				thumbs.find('img').css('opacity', this.settings.thumb_opacity);
			};
			thumbs.each(
        function (i) {
        	var link = $(this);
        	var image_src = link.attr('href');
        	var thumb = link.find('img');
        	// Check if the thumb has already loaded
        	if (!context.isImageLoaded(thumb[0])) {
        		thumb.load(
              function () {
              	if (this.width <= 0) {
              		this.width = 150;
              		blocker_running++;
              	}
              	thumb_wrapper_width += this.parentNode.parentNode.offsetWidth;
              	thumbs_loaded++;
              }
            );
        	} else {
        		if (thumb[0].width <= 0) {
        			thumb[0].width = 150;
        			blocker_running++;
        		}
        		thumb_wrapper_width += thumb[0].parentNode.parentNode.offsetWidth;
        		thumbs_loaded++;
        	};
        	link.addClass('ap-thumb' + i);
        	link.click(
            function () {
            	context.showImage(i);
            	context.slideshow.stop();
            	return false;
            }
          ).hover(
            function () {
            	if (!$(this).is('.ap-active') && context.settings.thumb_opacity < 1) {
            		$(this).find('img').fadeTo(300, 1);
            	};
            	context.preloadImage(i);
            },
            function () {
            	if (!$(this).is('.ap-active') && context.settings.thumb_opacity < 1) {
            		$(this).find('img').fadeTo(300, context.settings.thumb_opacity);
            	};
            }
          );
        	var link = false;
        	if (thumb.data('ap-link')) {
        		link = thumb.data('ap-link');
        	} else if (thumb.attr('longdesc') && thumb.attr('longdesc').length) {
        		link = thumb.attr('longdesc');
        	};
        	var desc = false;
        	if (thumb.data('ap-desc')) {
        		desc = thumb.data('ap-desc');
        	} else if (thumb.attr('alt') && thumb.attr('alt').length) {
        		desc = thumb.attr('alt');
        	};
        	var title = false;
        	if (thumb.data('ap-title')) {
        		title = thumb.data('ap-title');
        	} else if (thumb.attr('title') && thumb.attr('title').length) {
        		title = thumb.attr('title');
        	};
        	context.images[i] = { thumb: thumb.attr('src'), image: image_src, error: false,
        		preloaded: false, desc: desc, title: title, size: false,
        		link: link
        	};
        }
      );
			// Wait until all thumbs are loaded, and then set the width of the ul
			var inter = setInterval(
        function () {
        	if (thumb_count == thumbs_loaded) {
        		//thumb_wrapper_width -= 100;
        		thumb_wrapper_width += 4;
        		var list = context.nav.find('.ap-thumb-list');
        		list.css('width', thumb_wrapper_width + 'px');
        		clearInterval(inter);
        		if (blocker_running > 0) {
        			alert('Probably a advertisement blocker is active (for instance Chrome ADBlock). Width of thumbnails may seem distorted. Please disable the blocker for this page or website or reload page to see correct content.');
        		}
        	};
        },
        100
      );
		},
		initKeyEvents: function () {
			var context = this;
			$(document).keydown(
        function (e) {
        	if (e.keyCode == 39) {
        		// right arrow
        		context.nextImage();
        		context.slideshow.stop();
        	} else if (e.keyCode == 37) {
        		// left arrow
        		context.prevImage();
        		context.slideshow.stop();
        	};
        }
      );
		},
		initNextAndPrev: function () {
			this.next_link = $('<div class="ap-next"><div class="ap-next-image"></div></div>');
			this.prev_link = $('<div class="ap-prev"><div class="ap-prev-image"></div></div>');
			this.image_wrapper.append(this.next_link);
			this.image_wrapper.append(this.prev_link);
			var context = this;
			this.prev_link.add(this.next_link).mouseover(
        function (e) {
        	// IE 6 hides the wrapper div, so we have to set it's width
        	$(this).css('height', context.image_wrapper_height);
        	$(this).find('div').show();
        }
      ).mouseout(
        function (e) {
        	$(this).find('div').hide();
        }
      ).click(
        function () {
        	if ($(this).is('.ap-next')) {
        		context.nextImage();
        		context.slideshow.stop();
        	} else {
        		context.prevImage();
        		context.slideshow.stop();
        	};
        }
      ).find('div').css('opacity', 0.7);
		},
		initBackAndForward: function () {
			var context = this;
			this.scroll_forward = $('<div class="ap-forward"></div>');
			this.scroll_back = $('<div class="ap-back"></div>');
			this.nav.append(this.scroll_forward);
			this.nav.prepend(this.scroll_back);
			var has_scrolled = 0;
			var thumbs_scroll_interval = false;
			$(this.scroll_back).add(this.scroll_forward).click(
        function () {
        	// We don't want to jump the whole width, since an image
        	// might be cut at the edge
        	var width = context.nav_display_width - 50;
        	if (context.settings.scroll_jump > 0) {
        		var width = context.settings.scroll_jump;
        	};
        	if ($(this).is('.ap-forward')) {
        		var left = context.thumbs_wrapper.scrollLeft() + width;
        	} else {
        		var left = context.thumbs_wrapper.scrollLeft() - width;
        	};
        	if (context.settings.slideshow.stop_on_scroll) {
        		context.slideshow.stop();
        	};
        	context.thumbs_wrapper.animate({ scrollLeft: left + 'px' });
        	return false;
        }
      ).css('opacity', 0.6).hover(
        function () {
        	var direction = 'left';
        	if ($(this).is('.ap-forward')) {
        		direction = 'right';
        	};
        	thumbs_scroll_interval = setInterval(
            function () {
            	has_scrolled++;
            	// Don't want to stop the slideshow just because we scrolled a pixel or two
            	if (has_scrolled > 30 && context.settings.slideshow.stop_on_scroll) {
            		context.slideshow.stop();
            	};
            	var left = context.thumbs_wrapper.scrollLeft() + 1;
            	if (direction == 'left') {
            		left = context.thumbs_wrapper.scrollLeft() - 1;
            	};
            	context.thumbs_wrapper.scrollLeft(left);
            },
            10
          );
        	$(this).css('opacity', 1);
        },
        function () {
        	has_scrolled = 0;
        	clearInterval(thumbs_scroll_interval);
        	$(this).css('opacity', 0.6);
        }
      );
		},
		_afterShow: function () {
			this.gallery_info.html((this.current_index + 1) + ' / ' + this.images.length);
			if (!this.settings.cycle) {
				// Needed for IE
				this.prev_link.show().css('height', this.image_wrapper_height);
				this.next_link.show().css('height', this.image_wrapper_height);
				if (this.current_index == (this.images.length - 1)) {
					this.next_link.hide();
				};
				if (this.current_index == 0) {
					this.prev_link.hide();
				};
			};
			this.fireCallback(this.settings.callbacks.afterImageVisible);
		},
		/**
		* Checks if the image is small enough to fit inside the container
		* If not, shrink it proportionally
		*/
		_getContainedImageSize: function (image_width, image_height) {
			if (image_height > this.image_wrapper_height) {
				var ratio = image_width / image_height;
				image_height = this.image_wrapper_height;
				image_width = this.image_wrapper_height * ratio;
			};
			if (image_width > this.image_wrapper_width) {
				var ratio = image_height / image_width;
				image_width = this.image_wrapper_width;
				image_height = this.image_wrapper_width * ratio;
			};
			return { width: image_width, height: image_height };
		},
		/**
		* If the image dimensions are smaller than the wrapper, we position
		* it in the middle anyway
		*/
		_centerImage: function (img_container, image_width, image_height) {
			img_container.css('top', '0px');
			if (image_height < this.image_wrapper_height) {
				var dif = this.image_wrapper_height - image_height;
				img_container.css('top', (dif / 2) + 'px');
			};
			img_container.css('left', '0px');
			if (image_width < this.image_wrapper_width) {
				var dif = this.image_wrapper_width - image_width;
				img_container.css('left', (dif / 2) + 'px');
			};
		},
		_getDescription: function (image) {
			var desc = false;
			if (image.desc.length || image.title.length) {
				var title = '';
				if (image.title.length) {
					title = '<span class="ap-description-title">' + image.title + '</span>';
				};
				var desc = '';
				if (image.desc.length) {
					if (this.settings.descriptions) {
						var findDescr = '#galleryItem' + image.desc;
						var imagetext = $(findDescr); //this.settings.descriptions.find(findDescr);
						if (imagetext.length > 0) {
							desc = '<div class="ap-description-description">' + imagetext.html() + '</div>';
						}
					};
				};
				desc = $('<div class="ap-image-description">' + title + desc + '</div>');
			};
			return desc;
		},
		/**
		* @param function callback Gets fired when the image has loaded, is displaying
		*                          and it's animation has finished
		*/
		showImage: function (index, callback) {
			if (this.images[index] && !this.in_transition) {
				var context = this;
				var image = this.images[index];
				this.in_transition = true;
				if (!image.preloaded) {
					this.loading(true);
					this.preloadImage(index, function () {
						context.loading(false);
						context._showWhenLoaded(index, callback);
					});
				} else {
					this._showWhenLoaded(index, callback);
				};
			};
		},
		/**
		* @param function callback Gets fired when the image has loaded, is displaying
		*                          and it's animation has finished
		*/
		_showWhenLoaded: function (index, callback) {
			if (this.images[index]) {
				var context = this;
				var image = this.images[index];
				var img_container = $(document.createElement('div')).addClass('ap-image');
				var img = $(new Image()).attr('src', image.image);
				if (image.link) {
					//var link = $('<a href="' + image.link + '" target="_blank"></a>');
					var link = $('<a href="' + image.link + '" title="' + image.title + '"></a>');
					link.append(img);
					img_container.append(link);
				} else {
					img_container.append(img);
				}
				this.image_wrapper.prepend(img_container);
				var size = this._getContainedImageSize(image.size.width, image.size.height);
				img.attr('width', size.width);
				img.attr('height', size.height);
				img_container.css({ width: size.width + 'px', height: size.height + 'px' });
				this._centerImage(img_container, size.width, size.height);
				var desc = this._getDescription(image, img_container);
				if (desc) {
					if (!this.settings.description_wrapper) {
						img_container.append(desc);
						var width = size.width - parseInt(desc.css('padding-left'), 10) - parseInt(desc.css('padding-right'), 10);
						desc.css('width', width + 'px');
					} else {
						this.settings.description_wrapper.append(desc);
					}
				};
				this.highLightThumb(this.nav.find('.ap-thumb' + index));

				var direction = 'right';
				if (this.current_index < index) {
					direction = 'left';
				};
				this.fireCallback(this.settings.callbacks.beforeImageVisible);
				if (this.current_image || this.settings.animate_first_image) {
					var animation_speed = this.settings.animation_speed;
					var easing = 'swing';
					var animation = this.animations[this.settings.effect].call(this, img_container, direction, desc);
					if (typeof animation.speed != 'undefined') {
						animation_speed = animation.speed;
					};
					if (typeof animation.easing != 'undefined') {
						easing = animation.easing;
					};
					if (this.current_image) {
						var old_image = this.current_image;
						var old_description = this.current_description;
						old_image.animate(animation.old_image, animation_speed, easing,
              function () {
              	old_image.remove();
              	if (old_description) old_description.remove();
              }
            );
					};
					img_container.animate(animation.new_image, animation_speed, easing,
            function () {
            	context.current_index = index;
            	context.current_image = img_container;
            	context.current_description = desc;
            	context.in_transition = false;
            	context._afterShow();
            	context.fireCallback(callback);
            }
          );
				} else {
					this.current_index = index;
					this.current_image = img_container;
					context.current_description = desc;
					this.in_transition = false;
					context._afterShow();
					this.fireCallback(callback);
				};
			};
		},
		nextIndex: function () {
			if (this.current_index == (this.images.length - 1)) {
				if (!this.settings.cycle) {
					return false;
				};
				var next = 0;
			} else {
				var next = this.current_index + 1;
			};
			return next;
		},
		nextImage: function (callback) {
			var next = this.nextIndex();
			if (next === false) return false;
			this.preloadImage(next + 1);
			this.showImage(next, callback);
			return true;
		},
		prevIndex: function () {
			if (this.current_index == 0) {
				if (!this.settings.cycle) {
					return false;
				};
				var prev = this.images.length - 1;
			} else {
				var prev = this.current_index - 1;
			};
			return prev;
		},
		prevImage: function (callback) {
			var prev = this.prevIndex();
			if (prev === false) return false;
			this.preloadImage(prev - 1);
			this.showImage(prev, callback);
			return true;
		},
		preloadAll: function () {
			var context = this;
			var i = 0;
			function preloadNext() {
				if (i < context.images.length) {
					i++;
					context.preloadImage(i, preloadNext);
				};
			};
			context.preloadImage(i, preloadNext);
		},
		preloadImage: function (index, callback) {
			if (this.images[index]) {
				var image = this.images[index];
				if (!this.images[index].preloaded) {
					var img = $(new Image());
					img.attr('src', image.image);
					if (!this.isImageLoaded(img[0])) {
						this.preloads.append(img);
						var context = this;
						img.load(
              function () {
              	image.preloaded = true;
              	image.size = { width: this.width, height: this.height };
              	context.fireCallback(callback);
              }
            ).error(
              function () {
              	image.error = true;
              	image.preloaded = false;
              	image.size = false;
              }
            );
					} else {
						image.preloaded = true;
						image.size = { width: img[0].width, height: img[0].height };
						this.fireCallback(callback);
					};
				} else {
					this.fireCallback(callback);
				};
			};
		},
		isImageLoaded: function (img) {
			if (typeof img.complete != 'undefined' && !img.complete) {
				return false;
			};
			if (typeof img.naturalWidth != 'undefined' && img.naturalWidth == 0) {
				return false;
			};
			return true;
		},
		highLightThumb: function (thumb) {
			this.thumbs_wrapper.find('.ap-active').removeClass('ap-active');
			thumb.addClass('ap-active');
			if (this.settings.thumb_opacity < 1) {
				this.thumbs_wrapper.find('a:not(.ap-active) img').fadeTo(300, this.settings.thumb_opacity);
				thumb.find('img').fadeTo(300, 1);
			};
			var left = thumb[0].parentNode.offsetLeft;
			left -= (this.nav_display_width / 2) - (thumb[0].offsetWidth / 2);
			this.thumbs_wrapper.animate({ scrollLeft: left + 'px' });
		},
		fireCallback: function (fn) {
			if ($.isFunction(fn)) {
				fn.call(this);
			};
		}
	};

	function ApGallerySlideshow(nextimage_callback, settings) {
		this.init(nextimage_callback, settings);
	};
	ApGallerySlideshow.prototype = {
		start_link: false,
		stop_link: false,
		countdown: false,
		controls: false,

		settings: false,
		nextimage_callback: false,
		enabled: false,
		running: false,
		countdown_interval: false,
		init: function (nextimage_callback, settings) {
			var context = this;
			this.nextimage_callback = nextimage_callback;
			this.settings = settings;
		},
		create: function () {
			this.start_link = $('<span class="ap-slideshow-start">' + this.settings.start_label + '</span>');
			this.stop_link = $('<span class="ap-slideshow-stop">' + this.settings.stop_label + '</span>');
			this.countdown = $('<span class="ap-slideshow-countdown"></span>');
			this.controls = $('<div class="ap-slideshow-controls"></div>');
			this.controls.append(this.start_link).append(this.stop_link).append(this.countdown);
			this.countdown.hide();

			var context = this;
			this.start_link.click(
        function () {
        	context.start();
        }
      );
			this.stop_link.click(
        function () {
        	context.stop();
        }
      );
			$(document).keydown(
        function (e) {
        	if (e.keyCode == 83) {
        		// 's'
        		if (context.running) {
        			context.stop();
        		} else {
        			context.start();
        		};
        	};
        }
      );
			return this.controls;
		},
		disable: function () {
			this.enabled = false;
			this.stop();
			this.controls.hide();
		},
		enable: function () {
			this.enabled = true;
			this.controls.show();
		},
		toggle: function () {
			if (this.enabled) {
				this.disable();
			} else {
				this.enable();
			};
		},
		start: function () {
			if (this.running || !this.enabled) return false;
			var context = this;
			this.running = true;
			this.controls.addClass('ap-slideshow-running');
			this._next();
			this.fireCallback(this.settings.onStart);
			return true;
		},
		stop: function () {
			if (!this.running) return false;
			this.running = false;
			this.countdown.hide();
			this.controls.removeClass('ap-slideshow-running');
			clearInterval(this.countdown_interval);
			this.fireCallback(this.settings.onStop);
			return true;
		},
		_next: function () {
			var context = this;
			var pre = this.settings.countdown_prefix;
			var su = this.settings.countdown_sufix;
			clearInterval(context.countdown_interval);
			this.countdown.show().html(pre + (this.settings.speed / 1000) + su);
			var slide_timer = 0;
			this.countdown_interval = setInterval(
        function () {
        	slide_timer += 1000;
        	if (slide_timer >= context.settings.speed) {
        		var whenNextIsShown = function () {
        			// A check so the user hasn't stoped the slideshow during the
        			// animation
        			if (context.running) {
        				context._next();
        			};
        			slide_timer = 0;
        		};
        		if (!context.nextimage_callback(whenNextIsShown)) {
        			context.stop();
        		};
        		slide_timer = 0;
        	};
        	var sec = parseInt(context.countdown.text().replace(/[^0-9]/g, ''), 10);
        	sec--;
        	if (sec > 0) {
        		context.countdown.html(pre + sec + su);
        	};
        },
        1000
      );
		},
		fireCallback: function (fn) {
			if ($.isFunction(fn)) {
				fn.call(this);
			};
		}
	};
})(jQuery);