/**
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.
*/

Slideshow = new Class({
    Implements: [Chain, Events, Options],
	
    options: {/*
		onComplete: $empty,
		onEnd: $empty,
		onStart: $empty,*/
        captions: false,
        center: true,
        classes: [],
        controller: false,
        delay: 3000,
        duration: 2000,
        fast: false,
        height: false,
        href: '',
        hu: '',
        linked: false,
        loader: {
            'animate': ['css/loader-#.png', 12]
            },
        loop: true,
        match: /\?slide=(\d+)$/,
        overlap: true,
        paused: false,
        properties: ['href', 'rel', 'rev', 'title'],
        random: false,
        replace: [/site\/images\/normal\/(.*)$/, 'site/images/normal\/$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 += ('-' + this[arguments[i]]);
            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'));
        var images = (el) ? el.empty() : new Element('div', {
            'class': this.classes.get('images').substr(1)
            }).inject(this.slideshow);
        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;
    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);
}
});