/**
Script: Slideshow.js
Slideshow - A javascript class for Mootools to stream and animate the presentation of images on your website.

License:
MIT-style license.

Copyright:
Copyright (c) 2008 [Aeron Glemann](http://www.electricprism.com/aeron/).

Dependencies:
Mootools 1.2 Core: Fx.Morph, Fx.Tween, Selectors, Element.Dimensions.
Mootools 1.2 More: Assets.
*/

Logo5Slideshow = new Class({
    Implements: [Chain, Events, Options],

    options: {/*
		onComplete: $empty,
		onEnd: $empty,
		onStart: $empty,*/
        captions: false,
        center: true,
        classes: [],
        controller: false,
        delay: 5000,
        duration: 2500,
        fast: false,
        height: false,
        href: '',
        hu: '',
        linked: false,
        loader: { 'animate': ['UserControls/Slideshow/loader-#.png', 12] },
        loop: true,
        match: /\?slide=(\d+)$/,
        overlap: true,
        paused: false,
        properties: ['href', 'rel', 'rev', 'title'],
        random: false,
        replace: [/(\.[^\.]+)$/, 't$1'],
        resize: 'width',
        slide: 0,
        thumbnails: false,
        titles: true,
        transition: function (p) { return -(Math.cos(Math.PI * p) - 1) / 2; },
        width: false
    },

    /**
    Constructor: initialize
    Creates an instance of the Slideshow class.
	
    Arguments:
    element - (element) The wrapper element.
    data - (array or object) The images and optional thumbnails, captions and links for the show.
    options - (object) The options below.
	
    Syntax:
    var myShow = new Slideshow(element, data, options);
    */

    initialize: function (el, data, options) {
        this.setOptions(options);
        this.slideshow = $(el);
        if (!this.slideshow)
            return;
        this.slideshow.set('styles', { 'display': 'block', 'position': 'relative', 'z-index': 0 });
        var match = window.location.href.match(this.options.match);
        this.slide = (this.options.match && match) ? match[1].toInt() : this.options.slide;
        this.counter = this.delay = this.transition = 0;
        this.direction = 'left';
        this.paused = false;
        if (!this.options.overlap)
            this.options.duration *= 2;
        var anchor = this.slideshow.getElement('a') || new Element('a');
        if (!this.options.href)
            this.options.href = anchor.get('href') || '';
        if (this.options.hu.length && !this.options.hu.test(/\/$/))
            this.options.hu += '/';
        if (this.options.fast === true)
            this.options.fast = 2;

        // styles

        var keys = ['slideshow', 'first', 'prev', 'play', 'pause', 'next', 'last', 'images', 'captions', 'controller', 'thumbnails', 'hidden', 'visible', 'inactive', 'active', 'loader'];
        var values = keys.map(function (key, i) {
            return this.options.classes[i] || key;
        }, this);
        this.classes = values.associate(keys);
        this.classes.get = function () {
            var str = '.' + this.slideshow;
            for (var i = 0, l = arguments.length; i < l; i++)
                str += ('Logo5-' + this[arguments[i]]);
            //alert(str);
            return str;
        } .bind(this.classes);

        // data	

        if (!data) {
            this.options.hu = '';
            data = {};
            var thumbnails = this.slideshow.getElements(this.classes.get('thumbnails') + ' img');
            this.slideshow.getElements(this.classes.get('images') + ' img').each(function (img, i) {
                var src = img.get('src');
                var caption = $pick(img.get('alt'), img.get('title'), '');
                var parent = img.getParent();
                var properties = (parent.get('tag') == 'a') ? parent.getProperties : {};
                var href = img.getParent().get('href') || '';
                var thumbnail = (thumbnails[i]) ? thumbnails[i].get('src') : '';
                data[src] = { 'caption': caption, 'href': href, 'thumbnail': thumbnail };
            });
        }
        var loaded = this.load(data);
        if (!loaded)
            return;

        // events

        this.events = $H({ 'keydown': [], 'keyup': [], 'mousemove': [] });
        var keyup = function (e) {
            switch (e.key) {
                case 'left':
                    this.prev(e.shift); break;
                case 'right':
                    this.next(e.shift); break;
                case 'p':
                    this.pause(); break;
            }
        } .bind(this);
        this.events.keyup.push(keyup);
        document.addEvent('keyup', keyup);

        // required elements

        var el = this.slideshow.getElement(this.classes.get('images'));
        //alert(el);

        var images = (el) ? el.empty() : new Element('div', { 'class': this.classes.get('images').substr(1) }).inject(this.slideshow);
        // alert(this.classes.get('images').substr(1));

        var div = images.getSize();
        this.height = this.options.height || div.y;
        this.width = this.options.width || div.x;
        images.set({ 'styles': { 'display': 'block', 'height': this.height, 'overflow': 'hidden', 'position': 'relative', 'width': this.width} });
        this.slideshow.store('images', images);
        this.a = this.image = this.slideshow.getElement('img') || new Element('img');
        if (Browser.Engine.trident && Browser.Engine.version > 4)
            this.a.style.msInterpolationMode = 'bicubic';
        this.a.set('styles', { 'display': 'none', 'position': 'absolute', 'zIndex': 1 });
        this.b = this.a.clone();
        [this.a, this.b].each(function (img) {
            anchor.clone().cloneEvents(anchor).grab(img).inject(images);
        });

        // optional elements

        if (this.options.captions)
            this._captions();
        if (this.options.controller)
            this._controller();
        if (this.options.loader)
            this._loader();
        if (this.options.thumbnails)
            this._thumbnails();

        // begin show

        this._preload();
    },

    /**
    Public method: go
    Jump directly to a slide in the show.

    Arguments:
    n - (integer) The index number of the image to jump to, 0 being the first image in the show.
	
    Syntax:
    myShow.go(n);	
    */

    go: function (n, direction) {
        if ((this.slide - 1 + this.data.images.length) % this.data.images.length == n || $time() < this.transition)
            return;
        $clear(this.timer);
        this.delay = 0;
        this.direction = (direction) ? direction : ((n < this.slide) ? 'right' : 'left');
        this.slide = n;
        if (this.preloader)
            this.preloader = this.preloader.destroy();
        this._preload(this.options.fast == 2 || (this.options.fast == 1 && this.paused));
    },

    /**
    Public method: first
    Goes to the first image in the show.

    Syntax:
    myShow.first();	
    */

    first: function () {
        this.prev(true);
    },

    /**
    Public method: prev
    Goes to the previous image in the show.

    Syntax:
    myShow.prev();	
    */

    prev: function (first) {
        var n = 0;
        if (!first) {
            if (this.options.random) {

                // if it's a random show get the previous slide from the showed array

                if (this.showed.i < 2)
                    return;
                this.showed.i -= 2;
                n = this.showed.array[this.showed.i];
            }
            else
                n = (this.slide - 2 + this.data.images.length) % this.data.images.length;
        }
        this.go(n, 'right');
    },

    /**
    Public method: pause
    Toggles play / pause state of the show.

    Arguments:
    p - (undefined, 1 or 0) Call pause with no arguments to toggle the pause state. Call pause(1) to force pause, or pause(0) to force play.

    Syntax:
    myShow.pause(p);	
    */

    pause: function (p) {
        if ($chk(p))
            this.paused = (p) ? false : true;
        if (this.paused) {
            this.paused = false;
            this.delay = this.transition = 0;
            this.timer = this._preload.delay(100, this);
            [this.a, this.b].each(function (img) {
                ['morph', 'tween'].each(function (p) {
                    if (this.retrieve(p)) this.get(p).resume();
                }, img);
            });
            if (this.options.controller)
                this.slideshow.getElement('.' + this.classes.pause).removeClass(this.classes.play);
        }
        else {
            this.paused = true;
            this.delay = Number.MAX_VALUE;
            this.transition = 0;
            $clear(this.timer);
            [this.a, this.b].each(function (img) {
                ['morph', 'tween'].each(function (p) {
                    if (this.retrieve(p)) this.get(p).pause();
                }, img);
            });
            if (this.options.controller)
                this.slideshow.getElement('.' + this.classes.pause).addClass(this.classes.play);
        }
    },

    /**
    Public method: next
    Goes to the next image in the show.

    Syntax:
    myShow.next();	
    */

    next: function (last) {
        var n = (last) ? this.data.images.length - 1 : this.slide;
        this.go(n, 'left');
    },

    /**
    Public method: last
    Goes to the last image in the show.

    Syntax:
    myShow.last();	
    */

    last: function () {
        this.next(true);
    },

    /**
    Public method: load
    Loads a new data set into the show: will stop the current show, rewind and rebuild thumbnails if applicable.

    Arguments:
    data - (array or object) The images and optional thumbnails, captions and links for the show.

    Syntax:
    myShow.load(data);
    */

    load: function (data) {
        this.firstrun = true;
        this.showed = { 'array': [], 'i': 0 };
        if ($type(data) == 'array') {
            this.options.captions = false;
            data = new Array(data.length).associate(data.map(function (image, i) { return image + '?' + i }));
        }
        this.data = { 'images': [], 'captions': [], 'hrefs': [], 'thumbnails': [] };
        for (var image in data) {
            var obj = data[image] || {};
            var caption = (obj.caption) ? obj.caption.trim() : '';
            var href = (obj.href) ? obj.href.trim() : ((this.options.linked) ? this.options.hu + image : this.options.href);
            var thumbnail = (obj.thumbnail) ? obj.thumbnail.trim() : image.replace(this.options.replace[0], this.options.replace[1]);
            this.data.images.push(image);
            this.data.captions.push(caption);
            this.data.hrefs.push(href);
            this.data.thumbnails.push(thumbnail);
        }
        if (this.options.random)
            this.slide = $random(0, this.data.images.length - 1);

        // only run when data is loaded dynamically into an existing slideshow instance

        if (this.options.thumbnails && this.slideshow.retrieve('thumbnails'))
            this._thumbnails();
        if (this.slideshow.retrieve('images')) {
            [this.a, this.b].each(function (img) {
                ['morph', 'tween'].each(function (p) {
                    if (this.retrieve(p)) this.get(p).cancel();
                }, img);
            });
            this.slide = this.transition = 0;
            this.go(0);
        }
        return this.data.images.length;
    },

    /**
    Public method: destroy
    Destroys a Slideshow instance.

    Arguments:
    p - (string) The images and optional thumbnails, captions and links for the show.

    Syntax:
    myShow.destroy(p);
    */

    destroy: function (p) {
        this.events.each(function (array, e) {
            array.each(function (fn) { document.removeEvent(e, fn); });
        });
        this.pause(1);
        if (this.options.loader)
            $clear(this.slideshow.retrieve('loader').retrieve('timer'));
        if (this.options.thumbnails)
            $clear(this.slideshow.retrieve('thumbnails').retrieve('timer'));
        this.slideshow.uid = Native.UID++;
        if (p)
            this.slideshow[p]();
    },

    /**
    Private method: preload
    Preloads the next slide in the show, once loaded triggers the show, updates captions, thumbnails, etc.
    */

    _preload: function (fast) {
        if (!this.preloader)
            this.preloader = new Asset.image(this.options.hu + this.data.images[this.slide], { 'onload': function () {
                this.store('loaded', true);
            }
            });
        if (this.preloader.retrieve('loaded') && $time() > this.delay && $time() > this.transition) {
            if (this.stopped) {
                if (this.options.captions)
                    this.slideshow.retrieve('captions').get('morph').cancel().start(this.classes.get('captions', 'hidden'));
                this.pause(1);
                if (this.end)
                    this.fireEvent('end');
                this.stopped = this.end = false;
                return;
            }
            this.image = (this.counter % 2) ? this.b : this.a;
            this.image.set('styles', { 'display': 'block', 'height': 'auto', 'visibility': 'hidden', 'width': 'auto', 'zIndex': this.counter });
            ['src', 'height', 'width'].each(function (prop) {
                this.image.set(prop, this.preloader.get(prop));
            }, this);
            this._resize(this.image);
            this._center(this.image);
            var anchor = this.image.getParent();
            if (this.data.hrefs[this.slide])
                anchor.set('href', this.data.hrefs[this.slide]);
            else
                anchor.erase('href');
            var text = (this.data.captions[this.slide])
				? this.data.captions[this.slide].replace(/<.+?>/gm, '').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, "'")
				: '';
            this.image.set('alt', text);
            if (this.options.titles)
                anchor.set('title', text);
            if (this.options.loader)
                this.slideshow.retrieve('loader').fireEvent('hide');
            if (this.options.captions)
                this.slideshow.retrieve('captions').fireEvent('update', fast);
            if (this.options.thumbnails)
                this.slideshow.retrieve('thumbnails').fireEvent('update', fast);
            this._show(fast);
            this._loaded();
        }
        else {
            if ($time() > this.delay && this.options.loader)
                this.slideshow.retrieve('loader').fireEvent('show');
            this.timer = (this.paused && this.preloader.retrieve('loaded')) ? null : this._preload.delay(100, this, fast);
        }
    },

    /**
    Private method: show
    Does the slideshow effect.
    */

    _show: function (fast) {
        if (!this.image.retrieve('morph')) {
            var options = (this.options.overlap) ? { 'duration': this.options.duration, 'link': 'cancel'} : { 'duration': this.options.duration / 2, 'link': 'chain' };
            $$(this.a, this.b).set('morph', $merge(options, { 'onStart': this._start.bind(this), 'onComplete': this._complete.bind(this), 'transition': this.options.transition }));
        }
        var hidden = this.classes.get('images', ((this.direction == 'left') ? 'next' : 'prev'));
        var visible = this.classes.get('images', 'visible');
        var img = (this.counter % 2) ? this.a : this.b;
        //alert(visible);
      
        if (fast) {
            img.get('morph').cancel().set(hidden);
            this.image.get('morph').cancel().set(visible);
        }
        else {
            if (this.options.overlap) {
                img.get('morph').set(visible);
                this.image.get('morph').set(hidden).start(visible);
                
            }
            else {
                var fn = function (hidden, visible) {
                    this.image.get('morph').set(hidden).start(visible);
                } .pass([hidden, visible], this);
                hidden = this.classes.get('images', ((this.direction == 'left') ? 'prev' : 'next'));
                

                img.get('morph').set(visible).start(hidden).chain(fn);
            }
        }
    },

    /**
    Private method: loaded
    Run after the current image has been loaded, sets up the next image to be shown.
    */

    _loaded: function () {
        this.counter++;
        this.delay = (this.paused) ? Number.MAX_VALUE : $time() + this.options.duration + this.options.delay;
        this.direction = 'left';
        this.transition = (this.options.fast == 2 || (this.options.fast == 1 && this.paused)) ? 0 : $time() + this.options.duration;
        if (this.slide + 1 == this.data.images.length && !this.options.loop && !this.options.random)
            this.stopped = this.end = true;
        if (this.options.random) {
            this.showed.i++;
            if (this.showed.i >= this.showed.array.length) {
                var n = this.slide;
                if (this.showed.array.getLast() != n) this.showed.array.push(n);
                while (this.slide == n)
                    this.slide = $random(0, this.data.images.length - 1);
            }
            else
                this.slide = this.showed.array[this.showed.i];
        }
        else
            this.slide = (this.slide + 1) % this.data.images.length;
        if (this.image.getStyle('visibility') != 'visible')
            (function () { this.image.setStyle('visibility', 'visible'); }).delay(1, this);
        if (this.preloader)
            this.preloader = this.preloader.destroy();
        this._preload();
    },

    /**
    Private method: center
    Center an image.
    */

    _center: function (img) {
        if (this.options.center) {
            var size = img.getSize();
            img.set('styles', { 'left': (size.x - this.width) / -2, 'top': (size.y - this.height) / -2 });
        }
    },

    /**
    Private method: resize
    Resizes an image.
    */

    _resize: function (img) {
        if (this.options.resize) {
            var h = this.preloader.get('height'), w = this.preloader.get('width');
            var dh = this.height / h, dw = this.width / w, d;
            if (this.options.resize == 'length')
                d = (dh > dw) ? dw : dh;
            else
                d = (dh > dw) ? dh : dw;
            img.set('styles', { height: Math.ceil(h * d), width: Math.ceil(w * d) });
        }
    },

    /**
    Private method: start
    Callback on start of slide change.
    */

    _start: function () {
        this.fireEvent('start');
    },

    /**
    Private method: complete
    Callback on start of slide change.
    */

    _complete: function () {
        if (this.firstrun && this.options.paused) {
            this.firstrun = false;
            this.pause(1);
        }
        this.fireEvent('complete');
    },

    /**
    Private method: captions
    Builds the optional caption element, adds interactivity.
    This method can safely be removed if the captions option is not enabled.
    */

    _captions: function () {
        if (this.options.captions === true)
            this.options.captions = {};
        var el = this.slideshow.getElement(this.classes.get('captions'));
        var captions = (el) ? el.empty() : new Element('div', { 'class': this.classes.get('captions').substr(1) }).inject(this.slideshow);
        captions.set({
            'events': {
                'update': function (fast) {
                    var captions = this.slideshow.retrieve('captions');
                    var empty = (this.data.captions[this.slide] === '');
                    if (fast) {
                        var p = (empty) ? 'hidden' : 'visible';
                        captions.set('html', this.data.captions[this.slide]).get('morph').cancel().set(this.classes.get('captions', p));
                    }
                    else {
                        var fn = (empty) ? $empty : function (n) {
                            this.slideshow.retrieve('captions').set('html', this.data.captions[n]).morph(this.classes.get('captions', 'visible'))
                        } .pass(this.slide, this);
                        captions.get('morph').cancel().start(this.classes.get('captions', 'hidden')).chain(fn);
                    }
                } .bind(this)
            },
            'morph': $merge(this.options.captions, { 'link': 'chain' })
        });
        this.slideshow.store('captions', captions);
    },

    /**
    Private method: controller
    Builds the optional controller element, adds interactivity.
    This method can safely be removed if the controller option is not enabled.
    */

    _controller: function () {
        if (this.options.controller === true)
            this.options.controller = {};
        var el = this.slideshow.getElement(this.classes.get('controller'));
        var controller = (el) ? el.empty() : new Element('div', { 'class': this.classes.get('controller').substr(1) }).inject(this.slideshow);
        var ul = new Element('ul').inject(controller);
        $H({ 'first': 'Shift + Leftwards Arrow', 'prev': 'Leftwards Arrow', 'pause': 'P', 'next': 'Rightwards Arrow', 'last': 'Shift + Rightwards Arrow' }).each(function (accesskey, action) {
            var li = new Element('li', {
                'class': (action == 'pause' && this.options.paused) ? this.classes.play + ' ' + this.classes[action] : this.classes[action]
            }).inject(ul);
            var a = this.slideshow.retrieve(action, new Element('a', {
                'title': ((action == 'pause') ? this.classes.play.capitalize() + ' / ' : '') + this.classes[action].capitalize() + ' [' + accesskey + ']'
            }).inject(li));
            a.set('events', {
                'click': function (action) { this[action](); } .pass(action, this),
                'mouseenter': function (active) { this.addClass(active); } .pass(this.classes.active, a),
                'mouseleave': function (active) { this.removeClass(active); } .pass(this.classes.active, a)
            });
        }, this);
        controller.set({
            'events': {
                'hide': function (hidden) {
                    if (!this.retrieve('hidden'))
                        this.store('hidden', true).morph(hidden);
                } .pass(this.classes.get('controller', 'hidden'), controller),
                'show': function (visible) {
                    if (this.retrieve('hidden'))
                        this.store('hidden', false).morph(visible);
                } .pass(this.classes.get('controller', 'visible'), controller)
            },
            'morph': $merge(this.options.controller, { 'link': 'cancel' })
        }).store('hidden', false);
        var keydown = function (e) {
            if (['left', 'right', 'p'].contains(e.key)) {
                var controller = this.slideshow.retrieve('controller');
                if (controller.retrieve('hidden'))
                    controller.get('morph').set(this.classes.get('controller', 'visible'));
                switch (e.key) {
                    case 'left':
                        this.slideshow.retrieve((e.shift) ? 'first' : 'prev').fireEvent('mouseenter'); break;
                    case 'right':
                        this.slideshow.retrieve((e.shift) ? 'last' : 'next').fireEvent('mouseenter'); break;
                    default:
                        this.slideshow.retrieve('pause').fireEvent('mouseenter'); break;
                }
            }
        } .bind(this);
        this.events.keydown.push(keydown);
        var keyup = function (e) {
            if (['left', 'right', 'p'].contains(e.key)) {
                var controller = this.slideshow.retrieve('controller');
                if (controller.retrieve('hidden'))
                    controller.store('hidden', false).fireEvent('hide');
                switch (e.key) {
                    case 'left':
                        this.slideshow.retrieve((e.shift) ? 'first' : 'prev').fireEvent('mouseleave'); break;
                    case 'right':
                        this.slideshow.retrieve((e.shift) ? 'last' : 'next').fireEvent('mouseleave'); break;
                    default:
                        this.slideshow.retrieve('pause').fireEvent('mouseleave'); break;
                }
            }
        } .bind(this);
        this.events.keyup.push(keyup);
        var mousemove = function (e) {
            var images = this.slideshow.retrieve('images').getCoordinates();
            if (e.page.x > images.left && e.page.x < images.right && e.page.y > images.top && e.page.y < images.bottom)
                this.slideshow.retrieve('controller').fireEvent('show');
            else
                this.slideshow.retrieve('controller').fireEvent('hide');
        } .bind(this);
        this.events.mousemove.push(mousemove);
        document.addEvents({ 'keydown': keydown, 'keyup': keyup, 'mousemove': mousemove });
        this.slideshow.retrieve('controller', controller).fireEvent('hide');
    },

    /**
    Private method: loader
    Builds the optional loader element, adds interactivity.
    This method can safely be removed if the loader option is not enabled.
    */

    _loader: function () {
        if (this.options.loader === true)
            this.options.loader = {};
        var loader = new Element('div', {
            'class': this.classes.get('loader').substr(1),
            'morph': $merge(this.options.loader, { 'link': 'cancel' })
        }).store('hidden', false).store('i', 1).inject(this.slideshow.retrieve('images'));
        if (this.options.loader.animate) {
            for (var i = 0; i < this.options.loader.animate[1]; i++)
                img = new Asset.image(this.options.loader.animate[0].replace(/#/, i));
            if (Browser.Engine.trident4 && this.options.loader.animate[0].contains('png'))
                loader.setStyle('backgroundImage', 'none');
        }
        loader.set('events', {
            'animate': function () {
                var loader = this.slideshow.retrieve('loader');
                var i = (loader.retrieve('i').toInt() + 1) % this.options.loader.animate[1];
                loader.store('i', i);
                var img = this.options.loader.animate[0].replace(/#/, i);
                if (Browser.Engine.trident4 && this.options.loader.animate[0].contains('png'))
                    loader.style.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src="' + img + '", sizingMethod="scale")';
                else
                    loader.setStyle('backgroundImage', 'url(' + img + ')');
            } .bind(this),
            'hide': function () {
                var loader = this.slideshow.retrieve('loader');
                if (!loader.retrieve('hidden')) {
                    loader.store('hidden', true).morph(this.classes.get('loader', 'hidden'));
                    if (this.options.loader.animate)
                        $clear(loader.retrieve('timer'));
                }
            } .bind(this),
            'show': function () {
                var loader = this.slideshow.retrieve('loader');
                if (loader.retrieve('hidden')) {
                    loader.store('hidden', false).morph(this.classes.get('loader', 'visible'));
                    if (this.options.loader.animate)
                        loader.store('timer', function () { this.fireEvent('animate'); } .periodical(50, loader));
                }
            } .bind(this)
        });
        this.slideshow.retrieve('loader', loader).fireEvent('hide');
    },

    /**
    Private method: thumbnails
    Builds the optional thumbnails element, adds interactivity.
    This method can safely be removed if the thumbnails option is not enabled.
    */

    _thumbnails: function () {
        if (this.options.thumbnails === true)
            this.options.thumbnails = {};
        var el = this.slideshow.getElement(this.classes.get('thumbnails'));
        var thumbnails = (el) ? el.empty() : new Element('div', { 'class': this.classes.get('thumbnails').substr(1) }).inject(this.slideshow);
        thumbnails.setStyle('overflow', 'hidden');
        var ul = new Element('ul', { 'tween': { 'link': 'cancel'} }).inject(thumbnails);
        this.data.thumbnails.each(function (thumbnail, i) {
            var li = new Element('li').inject(ul);
            var a = new Element('a', {
                'events': {
                    'click': function (i) {
                        this.go(i);
                        return false;
                    } .pass(i, this),
                    'loaded': function () {
                        this.data.thumbnails.pop();
                        if (!this.data.thumbnails.length) {
                            var div = thumbnails.getCoordinates();
                            var props = thumbnails.retrieve('props');
                            var limit = 0, pos = props[1], size = props[2];
                            thumbnails.getElements('li').each(function (li) {
                                var li = li.getCoordinates();
                                if (li[pos] > limit) limit = li[pos];
                            }, this);
                            thumbnails.store('limit', div[size] + div[props[0]] - limit);
                        }
                    } .bind(this)
                },
                'href': this.options.hu + this.data.images[i],
                'morph': $merge(this.options.thumbnails, { 'link': 'cancel' })
            }).inject(li);
            if (this.data.captions[i] && this.options.titles)
                a.set('title', this.data.captions[i].replace(/<.+?>/gm, '').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, "'"));
            var img = new Asset.image(this.options.hu + thumbnail, {
                'onload': function () { this.fireEvent('loaded'); } .bind(a)
            }).inject(a);
        }, this);
        thumbnails.set('events', {
            'scroll': function (n, fast) {
                var div = this.getCoordinates();
                var ul = this.getElement('ul').getPosition();
                var props = this.retrieve('props');
                var axis = props[3], delta, pos = props[0], size = props[2], value;
                var tween = this.getElement('ul').get('tween', { 'property': pos });
                if ($chk(n)) {
                    var li = this.getElements('li')[n].getCoordinates();
                    delta = div[pos] + (div[size] / 2) - (li[size] / 2) - li[pos]
                    value = (ul[axis] - div[pos] + delta).limit(this.retrieve('limit'), 0);
                    if (fast)
                        tween.set(value);
                    else
                        tween.start(value);
                }
                else {
                    var area = div[props[2]] / 3, page = this.retrieve('page'), velocity = -0.2;
                    if (page[axis] < (div[pos] + area))
                        delta = (page[axis] - div[pos] - area) * velocity;
                    else if (page[axis] > (div[pos] + div[size] - area))
                        delta = (page[axis] - div[pos] - div[size] + area) * velocity;
                    if (delta) {
                        value = (ul[axis] - div[pos] + delta).limit(this.retrieve('limit'), 0);
                        tween.set(value);
                    }
                }
            } .bind(thumbnails),
            'update': function (fast) {
                var thumbnails = this.slideshow.retrieve('thumbnails');
                thumbnails.getElements('a').each(function (a, i) {
                    if (i == this.slide) {
                        if (!a.retrieve('active', false)) {
                            a.store('active', true);
                            var active = this.classes.get('thumbnails', 'active');
                            if (fast) a.get('morph').set(active);
                            else a.morph(active);
                        }
                    }
                    else {
                        if (a.retrieve('active', true)) {
                            a.store('active', false);
                            var inactive = this.classes.get('thumbnails', 'inactive');
                            if (fast) a.get('morph').set(inactive);
                            else a.morph(inactive);
                        }
                    }
                }, this);
                if (!thumbnails.retrieve('mouseover'))
                    thumbnails.fireEvent('scroll', [this.slide, fast]);
            } .bind(this)
        })
        var div = thumbnails.getCoordinates();
        thumbnails.store('props', (div.height > div.width) ? ['top', 'bottom', 'height', 'y'] : ['left', 'right', 'width', 'x']);
        var mousemove = function (e) {
            var div = this.getCoordinates();
            if (e.page.x > div.left && e.page.x < div.right && e.page.y > div.top && e.page.y < div.bottom) {
                this.store('page', e.page);
                if (!this.retrieve('mouseover')) {
                    this.store('mouseover', true);
                    this.store('timer', function () { this.fireEvent('scroll'); } .periodical(50, this));
                }
            }
            else {
                if (this.retrieve('mouseover')) {
                    this.store('mouseover', false);
                    $clear(this.retrieve('timer'));
                }
            }
        } .bind(thumbnails);
        this.events.mousemove.push(mousemove);
        document.addEvent('mousemove', mousemove);
        this.slideshow.store('thumbnails', thumbnails);
    }
});