//MooTools More, <http://mootools.net/more>. Copyright (c) 2006-2008 Valerio Proietti, <http://mad4milk.net>, MIT Style License.



/*

Script: Fx.Slide.js

    Effect to slide an element in and out of view.



License:

    MIT-style license.

*/



Fx.Slide = new Class({



    Extends: Fx,



    options: {

        mode: 'vertical'

    },



    initialize: function(element, options){

        this.addEvent('complete', function(){

            this.open = (this.wrapper['offset' + this.layout.capitalize()] != 0);

            if (this.open && Browser.Engine.webkit419) this.element.dispose().inject(this.wrapper);

        }, true);

        this.element = this.subject = $(element);

        this.parent(options);

        var wrapper = this.element.retrieve('wrapper');

        this.wrapper = wrapper || new Element('div', {

            styles: $extend(this.element.getStyles('margin', 'position'), {'overflow': 'hidden'})

        }).wraps(this.element);

        this.element.store('wrapper', this.wrapper).setStyle('margin', 0);

        this.now = [];

        this.open = true;

    },



    vertical: function(){

        this.margin = 'margin-top';

        this.layout = 'height';

        this.offset = this.element.offsetHeight;

    },



    horizontal: function(){

        this.margin = 'margin-left';

        this.layout = 'width';

        this.offset = this.element.offsetWidth;

    },



    set: function(now){

        this.element.setStyle(this.margin, now[0]);

        this.wrapper.setStyle(this.layout, now[1]);

        return this;

    },



    compute: function(from, to, delta){

        var now = [];

        var x = 2;

        x.times(function(i){

            now[i] = Fx.compute(from[i], to[i], delta);

        });

        return now;

    },



    start: function(how, mode){

        if (!this.check(arguments.callee, how, mode)) return this;

        this[mode || this.options.mode]();

        var margin = this.element.getStyle(this.margin).toInt();

        var layout = this.wrapper.getStyle(this.layout).toInt();

        var caseIn = [[margin, layout], [0, this.offset]];

        var caseOut = [[margin, layout], [-this.offset, 0]];

        var start;

        switch (how){

            case 'in': start = caseIn; break;

            case 'out': start = caseOut; break;

            case 'toggle': start = (this.wrapper['offset' + this.layout.capitalize()] == 0) ? caseIn : caseOut;

        }

        return this.parent(start[0], start[1]);

    },



    slideIn: function(mode){

        return this.start('in', mode);

    },



    slideOut: function(mode){

        return this.start('out', mode);

    },



    hide: function(mode){

        this[mode || this.options.mode]();

        this.open = false;

        return this.set([-this.offset, 0]);

    },



    show: function(mode){

        this[mode || this.options.mode]();

        this.open = true;

        return this.set([0, this.offset]);

    },



    toggle: function(mode){

        return this.start('toggle', mode);

    }



});



Element.Properties.slide = {



    set: function(options){

        var slide = this.retrieve('slide');

        if (slide) slide.cancel();

        return this.eliminate('slide').store('slide:options', $extend({link: 'cancel'}, options));

    },

    

    get: function(options){

        if (options || !this.retrieve('slide')){

            if (options || !this.retrieve('slide:options')) this.set('slide', options);

            this.store('slide', new Fx.Slide(this, this.retrieve('slide:options')));

        }

        return this.retrieve('slide');

    }



};



Element.implement({



    slide: function(how, mode){

        how = how || 'toggle';

        var slide = this.get('slide'), toggle;

        switch (how){

            case 'hide': slide.hide(mode); break;

            case 'show': slide.show(mode); break;

            case 'toggle':

                var flag = this.retrieve('slide:flag', slide.open);

                slide[(flag) ? 'slideOut' : 'slideIn'](mode);

                this.store('slide:flag', !flag);

                toggle = true;

            break;

            default: slide.start(how, mode);

        }

        if (!toggle) this.eliminate('slide:flag');

        return this;

    }



});





/*

Script: Fx.Scroll.js

    Effect to smoothly scroll any element, including the window.



License:

    MIT-style license.

*/



Fx.Scroll = new Class({



    Extends: Fx,



    options: {

        offset: {'x': 0, 'y': 0},

        wheelStops: true

    },



    initialize: function(element, options){

        this.element = this.subject = $(element);

        this.parent(options);

        var cancel = this.cancel.bind(this, false);



        if ($type(this.element) != 'element') this.element = $(this.element.getDocument().body);



        var stopper = this.element;



        if (this.options.wheelStops){

            this.addEvent('start', function(){

                stopper.addEvent('mousewheel', cancel);

            }, true);

            this.addEvent('complete', function(){

                stopper.removeEvent('mousewheel', cancel);

            }, true);

        }

    },



    set: function(){

        var now = Array.flatten(arguments);

        this.element.scrollTo(now[0], now[1]);

    },



    compute: function(from, to, delta){

        var now = [];

        var x = 2;

        x.times(function(i){

            now.push(Fx.compute(from[i], to[i], delta));

        });

        return now;

    },



    start: function(x, y){

        if (!this.check(arguments.callee, x, y)) return this;

        var offsetSize = this.element.getSize(), scrollSize = this.element.getScrollSize();

        var scroll = this.element.getScroll(), values = {x: x, y: y};

        for (var z in values){

            var max = scrollSize[z] - offsetSize[z];

            if ($chk(values[z])) values[z] = ($type(values[z]) == 'number') ? values[z].limit(0, max) : max;

            else values[z] = scroll[z];

            values[z] += this.options.offset[z];

        }

        return this.parent([scroll.x, scroll.y], [values.x, values.y]);

    },



    toTop: function(){

        return this.start(false, 0);

    },



    toLeft: function(){

        return this.start(0, false);

    },



    toRight: function(){

        return this.start('right', false);

    },



    toBottom: function(){

        return this.start(false, 'bottom');

    },



    toElement: function(el){

        var position = $(el).getPosition(this.element);

        return this.start(position.x, position.y);

    }



});





/*

Script: Fx.Elements.js

    Effect to change any number of CSS properties of any number of Elements.



License:

    MIT-style license.

*/



Fx.Elements = new Class({



    Extends: Fx.CSS,



    initialize: function(elements, options){

        this.elements = this.subject = $$(elements);

        this.parent(options);

    },



    compute: function(from, to, delta){

        var now = {};

        for (var i in from){

            var iFrom = from[i], iTo = to[i], iNow = now[i] = {};

            for (var p in iFrom) iNow[p] = this.parent(iFrom[p], iTo[p], delta);

        }

        return now;

    },



    set: function(now){

        for (var i in now){

            var iNow = now[i];

            for (var p in iNow) this.render(this.elements[i], p, iNow[p], this.options.unit);

        }

        return this;

    },



    start: function(obj){

        if (!this.check(arguments.callee, obj)) return this;

        var from = {}, to = {};

        for (var i in obj){

            var iProps = obj[i], iFrom = from[i] = {}, iTo = to[i] = {};

            for (var p in iProps){

                var parsed = this.prepare(this.elements[i], p, iProps[p]);

                iFrom[p] = parsed.from;

                iTo[p] = parsed.to;

            }

        }

        return this.parent(from, to);

    }



});



/*

Script: Drag.js

    The base Drag Class. Can be used to drag and resize Elements using mouse events.



License:

    MIT-style license.

*/



var Drag = new Class({



    Implements: [Events, Options],



    options: {/*

        onBeforeStart: $empty,

        onStart: $empty,

        onDrag: $empty,

        onCancel: $empty,

        onComplete: $empty,*/

        snap: 6,

        unit: 'px',

        grid: false,

        style: true,

        limit: false,

        handle: false,

        invert: false,

        preventDefault: false,

        modifiers: {x: 'left', y: 'top'}

    },



    initialize: function(){

        var params = Array.link(arguments, {'options': Object.type, 'element': $defined});

        this.element = $(params.element);

        this.document = this.element.getDocument();

        this.setOptions(params.options || {});

        var htype = $type(this.options.handle);

        this.handles = (htype == 'array' || htype == 'collection') ? $$(this.options.handle) : $(this.options.handle) || this.element;

        this.mouse = {'now': {}, 'pos': {}};

        this.value = {'start': {}, 'now': {}};

        

        this.selection = (Browser.Engine.trident) ? 'selectstart' : 'mousedown';

        

        this.bound = {

            start: this.start.bind(this),

            check: this.check.bind(this),

            drag: this.drag.bind(this),

            stop: this.stop.bind(this),

            cancel: this.cancel.bind(this),

            eventStop: $lambda(false)

        };

        this.attach();

    },



    attach: function(){

        this.handles.addEvent('mousedown', this.bound.start);

        return this;

    },



    detach: function(){

        this.handles.removeEvent('mousedown', this.bound.start);

        return this;

    },



    start: function(event){

        if (this.options.preventDefault) event.preventDefault();

        this.fireEvent('beforeStart', this.element);

        this.mouse.start = event.page;

        var limit = this.options.limit;

        this.limit = {'x': [], 'y': []};

        for (var z in this.options.modifiers){

            if (!this.options.modifiers[z]) continue;

            if (this.options.style) this.value.now[z] = this.element.getStyle(this.options.modifiers[z]).toInt();

            else this.value.now[z] = this.element[this.options.modifiers[z]];

            if (this.options.invert) this.value.now[z] *= -1;

            this.mouse.pos[z] = event.page[z] - this.value.now[z];

            if (limit && limit[z]){

                for (var i = 2; i--; i){

                    if ($chk(limit[z][i])) this.limit[z][i] = $lambda(limit[z][i])();

                }

            }

        }

        if ($type(this.options.grid) == 'number') this.options.grid = {'x': this.options.grid, 'y': this.options.grid};

        this.document.addEvents({mousemove: this.bound.check, mouseup: this.bound.cancel});

        this.document.addEvent(this.selection, this.bound.eventStop);

    },



    check: function(event){

        if (this.options.preventDefault) event.preventDefault();

        var distance = Math.round(Math.sqrt(Math.pow(event.page.x - this.mouse.start.x, 2) + Math.pow(event.page.y - this.mouse.start.y, 2)));

        if (distance > this.options.snap){

            this.cancel();

            this.document.addEvents({

                mousemove: this.bound.drag,

                mouseup: this.bound.stop

            });

            this.fireEvent('start', this.element).fireEvent('snap', this.element);

        }

    },



    drag: function(event){

        if (this.options.preventDefault) event.preventDefault();

        this.mouse.now = event.page;

        for (var z in this.options.modifiers){

            if (!this.options.modifiers[z]) continue;

            this.value.now[z] = this.mouse.now[z] - this.mouse.pos[z];

            if (this.options.invert) this.value.now[z] *= -1;

            if (this.options.limit && this.limit[z]){

                if ($chk(this.limit[z][1]) && (this.value.now[z] > this.limit[z][1])){

                    this.value.now[z] = this.limit[z][1];

                } else if ($chk(this.limit[z][0]) && (this.value.now[z] < this.limit[z][0])){

                    this.value.now[z] = this.limit[z][0];

                }

            }

            if (this.options.grid[z]) this.value.now[z] -= (this.value.now[z] % this.options.grid[z]);

            if (this.options.style) this.element.setStyle(this.options.modifiers[z], this.value.now[z] + this.options.unit);

            else this.element[this.options.modifiers[z]] = this.value.now[z];

        }

        this.fireEvent('drag', this.element);

    },



    cancel: function(event){

        this.document.removeEvent('mousemove', this.bound.check);

        this.document.removeEvent('mouseup', this.bound.cancel);

        if (event){

            this.document.removeEvent(this.selection, this.bound.eventStop);

            this.fireEvent('cancel', this.element);

        }

    },



    stop: function(event){

        this.document.removeEvent(this.selection, this.bound.eventStop);

        this.document.removeEvent('mousemove', this.bound.drag);

        this.document.removeEvent('mouseup', this.bound.stop);

        if (event) this.fireEvent('complete', this.element);

    }



});



Element.implement({

    

    makeResizable: function(options){

        return new Drag(this, $merge({modifiers: {'x': 'width', 'y': 'height'}}, options));

    }



});



/*

Script: Drag.Move.js

    A Drag extension that provides support for the constraining of draggables to containers and droppables.



License:

    MIT-style license.

*/



Drag.Move = new Class({



    Extends: Drag,



    options: {

        droppables: [],

        container: false

    },



    initialize: function(element, options){

        this.parent(element, options);

        this.droppables = $$(this.options.droppables);

        this.container = $(this.options.container);

        if (this.container && $type(this.container) != 'element') this.container = $(this.container.getDocument().body);

        element = this.element;

        

        var current = element.getStyle('position');

        var position = (current != 'static') ? current : 'absolute';

        if (element.getStyle('left') == 'auto' || element.getStyle('top') == 'auto') element.position(element.getPosition(element.offsetParent));

        

        element.setStyle('position', position);

        

        this.addEvent('start', function(){

            this.checkDroppables();

        }, true);

    },



    start: function(event){

        if (this.container){

            var el = this.element, cont = this.container, ccoo = cont.getCoordinates(el.offsetParent), cps = {}, ems = {};



            ['top', 'right', 'bottom', 'left'].each(function(pad){

                cps[pad] = cont.getStyle('padding-' + pad).toInt();

                ems[pad] = el.getStyle('margin-' + pad).toInt();

            }, this);



            var width = el.offsetWidth + ems.left + ems.right, height = el.offsetHeight + ems.top + ems.bottom;

            var x = [ccoo.left + cps.left, ccoo.right - cps.right - width];

            var y = [ccoo.top + cps.top, ccoo.bottom - cps.bottom - height];



            this.options.limit = {x: x, y: y};

        }

        this.parent(event);

    },



    checkAgainst: function(el){

        el = el.getCoordinates();

        var now = this.mouse.now;

        return (now.x > el.left && now.x < el.right && now.y < el.bottom && now.y > el.top);

    },



    checkDroppables: function(){

        var overed = this.droppables.filter(this.checkAgainst, this).getLast();

        if (this.overed != overed){

            if (this.overed) this.fireEvent('leave', [this.element, this.overed]);

            if (overed){

                this.overed = overed;

                this.fireEvent('enter', [this.element, overed]);

            } else {

                this.overed = null;

            }

        }

    },



    drag: function(event){

        this.parent(event);

        if (this.droppables.length) this.checkDroppables();

    },



    stop: function(event){

        this.checkDroppables();

        this.fireEvent('drop', [this.element, this.overed]);

        this.overed = null;

        return this.parent(event);

    }



});



Element.implement({



    makeDraggable: function(options){

        return new Drag.Move(this, options);

    }



});





/*

Script: Hash.Cookie.js

    Class for creating, reading, and deleting Cookies in JSON format.



License:

    MIT-style license.

*/



Hash.Cookie = new Class({



    Extends: Cookie,



    options: {

        autoSave: true

    },



    initialize: function(name, options){

        this.parent(name, options);

        this.load();

    },



    save: function(){

        var value = JSON.encode(this.hash);

        if (!value || value.length > 4096) return false; //cookie would be truncated!

        if (value == '{}') this.dispose();

        else this.write(value);

        return true;

    },



    load: function(){

        this.hash = new Hash(JSON.decode(this.read(), true));

        return this;

    }



});



Hash.Cookie.implement((function(){

    

    var methods = {};

    

    Hash.each(Hash.prototype, function(method, name){

        methods[name] = function(){

            var value = method.apply(this.hash, arguments);

            if (this.options.autoSave) this.save();

            return value;

        };

    });

    

    return methods;

    

})());



/*

Script: Color.js

    Class for creating and manipulating colors in JavaScript. Supports HSB -> RGB Conversions and vice versa.



License:

    MIT-style license.

*/



var Color = new Native({

  

    initialize: function(color, type){

        if (arguments.length >= 3){

            type = "rgb"; color = Array.slice(arguments, 0, 3);

        } else if (typeof color == 'string'){

            if (color.match(/rgb/)) color = color.rgbToHex().hexToRgb(true);

            else if (color.match(/hsb/)) color = color.hsbToRgb();

            else color = color.hexToRgb(true);

        }

        type = type || 'rgb';

        switch (type){

            case 'hsb':

                var old = color;

                color = color.hsbToRgb();

                color.hsb = old;

            break;

            case 'hex': color = color.hexToRgb(true); break;

        }

        color.rgb = color.slice(0, 3);

        color.hsb = color.hsb || color.rgbToHsb();

        color.hex = color.rgbToHex();

        return $extend(color, this);

    }



});



Color.implement({



    mix: function(){

        var colors = Array.slice(arguments);

        var alpha = ($type(colors.getLast()) == 'number') ? colors.pop() : 50;

        var rgb = this.slice();

        colors.each(function(color){

            color = new Color(color);

            for (var i = 0; i < 3; i++) rgb[i] = Math.round((rgb[i] / 100 * (100 - alpha)) + (color[i] / 100 * alpha));

        });

        return new Color(rgb, 'rgb');

    },



    invert: function(){

        return new Color(this.map(function(value){

            return 255 - value;

        }));

    },



    setHue: function(value){

        return new Color([value, this.hsb[1], this.hsb[2]], 'hsb');

    },



    setSaturation: function(percent){

        return new Color([this.hsb[0], percent, this.hsb[2]], 'hsb');

    },



    setBrightness: function(percent){

        return new Color([this.hsb[0], this.hsb[1], percent], 'hsb');

    }



});



function $RGB(r, g, b){

    return new Color([r, g, b], 'rgb');

};



function $HSB(h, s, b){

    return new Color([h, s, b], 'hsb');

};



function $HEX(hex){

    return new Color(hex, 'hex');

};



Array.implement({



    rgbToHsb: function(){

        var red = this[0], green = this[1], blue = this[2];

        var hue, saturation, brightness;

        var max = Math.max(red, green, blue), min = Math.min(red, green, blue);

        var delta = max - min;

        brightness = max / 255;

        saturation = (max != 0) ? delta / max : 0;

        if (saturation == 0){

            hue = 0;

        } else {

            var rr = (max - red) / delta;

            var gr = (max - green) / delta;

            var br = (max - blue) / delta;

            if (red == max) hue = br - gr;

            else if (green == max) hue = 2 + rr - br;

            else hue = 4 + gr - rr;

            hue /= 6;

            if (hue < 0) hue++;

        }

        return [Math.round(hue * 360), Math.round(saturation * 100), Math.round(brightness * 100)];

    },



    hsbToRgb: function(){

        var br = Math.round(this[2] / 100 * 255);

        if (this[1] == 0){

            return [br, br, br];

        } else {

            var hue = this[0] % 360;

            var f = hue % 60;

            var p = Math.round((this[2] * (100 - this[1])) / 10000 * 255);

            var q = Math.round((this[2] * (6000 - this[1] * f)) / 600000 * 255);

            var t = Math.round((this[2] * (6000 - this[1] * (60 - f))) / 600000 * 255);

            switch (Math.floor(hue / 60)){

                case 0: return [br, t, p];

                case 1: return [q, br, p];

                case 2: return [p, br, t];

                case 3: return [p, q, br];

                case 4: return [t, p, br];

                case 5: return [br, p, q];

            }

        }

        return false;

    }



});



String.implement({



    rgbToHsb: function(){

        var rgb = this.match(/\d{1,3}/g);

        return (rgb) ? hsb.rgbToHsb() : null;

    },

    

    hsbToRgb: function(){

        var hsb = this.match(/\d{1,3}/g);

        return (hsb) ? hsb.hsbToRgb() : null;

    }



});





/*

Script: Group.js

    Class for monitoring collections of events



License:

    MIT-style license.

*/



var Group = new Class({



    initialize: function(){

        this.instances = Array.flatten(arguments);

        this.events = {};

        this.checker = {};

    },



    addEvent: function(type, fn){

        this.checker[type] = this.checker[type] || {};

        this.events[type] = this.events[type] || [];

        if (this.events[type].contains(fn)) return false;

        else this.events[type].push(fn);

        this.instances.each(function(instance, i){

            instance.addEvent(type, this.check.bind(this, [type, instance, i]));

        }, this);

        return this;

    },



    check: function(type, instance, i){

        this.checker[type][i] = true;

        var every = this.instances.every(function(current, j){

            return this.checker[type][j] || false;

        }, this);

        if (!every) return;

        this.checker[type] = {};

        this.events[type].each(function(event){

            event.call(this, this.instances, instance);

        }, this);

    }



});





/*

Script: Assets.js

    Provides methods to dynamically load JavaScript, CSS, and Image files into the document.



License:

    MIT-style license.

*/



var Asset = new Hash({



    javascript: function(source, properties){

        properties = $extend({

            onload: $empty,

            document: document,

            check: $lambda(true)

        }, properties);

        

        var script = new Element('script', {'src': source, 'type': 'text/javascript'});

        

        var load = properties.onload.bind(script), check = properties.check, doc = properties.document;

        delete properties.onload; delete properties.check; delete properties.document;

        

        script.addEvents({

            load: load,

            readystatechange: function(){

                if (['loaded', 'complete'].contains(this.readyState)) load();

            }

        }).setProperties(properties);

        

        

        if (Browser.Engine.webkit419) var checker = (function(){

            if (!$try(check)) return;

            $clear(checker);

            load();

        }).periodical(50);

        

        return script.inject(doc.head);

    },



    css: function(source, properties){

        return new Element('link', $merge({

            'rel': 'stylesheet', 'media': 'screen', 'type': 'text/css', 'href': source

        }, properties)).inject(document.head);

    },



    image: function(source, properties){

        properties = $merge({

            'onload': $empty,

            'onabort': $empty,

            'onerror': $empty

        }, properties);

        var image = new Image();

        var element = $(image) || new Element('img');

        ['load', 'abort', 'error'].each(function(name){

            var type = 'on' + name;

            var event = properties[type];

            delete properties[type];

            image[type] = function(){

                if (!image) return;

                if (!element.parentNode){

                    element.width = image.width;

                    element.height = image.height;

                }

                image = image.onload = image.onabort = image.onerror = null;

                event.delay(1, element, element);

                element.fireEvent(name, element, 1);

            };

        });

        image.src = element.src = source;

        if (image && image.complete) image.onload.delay(1);

        return element.setProperties(properties);

    },



    images: function(sources, options){

        options = $merge({

            onComplete: $empty,

            onProgress: $empty

        }, options);

        if (!sources.push) sources = [sources];

        var images = [];

        var counter = 0;

        sources.each(function(source){

            var img = new Asset.image(source, {

                'onload': function(){

                    options.onProgress.call(this, counter, sources.indexOf(source));

                    counter++;

                    if (counter == sources.length) options.onComplete();

                }

            });

            images.push(img);

        });

        return new Elements(images);

    }



});



/*

Script: Sortables.js

    Class for creating a drag and drop sorting interface for lists of items.



License:

    MIT-style license.

*/



var Sortables = new Class({



    Implements: [Events, Options],



    options: {/*

        onSort: $empty,

        onStart: $empty,

        onComplete: $empty,*/

        snap: 4,

        opacity: 1,

        clone: false,

        revert: false,

        handle: false,

        constrain: false

    },



    initialize: function(lists, options){

        this.setOptions(options);

        this.elements = [];

        this.lists = [];

        this.idle = true;

        

        this.addLists($$($(lists) || lists));

        if (!this.options.clone) this.options.revert = false;

        if (this.options.revert) this.effect = new Fx.Morph(null, $merge({duration: 250, link: 'cancel'}, this.options.revert));

    },



    attach: function(){

        this.addLists(this.lists);

        return this;

    },



    detach: function(){

        this.lists = this.removeLists(this.lists);

        return this;

    },



    addItems: function(){

        Array.flatten(arguments).each(function(element){

            this.elements.push(element);

            var start = element.retrieve('sortables:start', this.start.bindWithEvent(this, element));

            (this.options.handle ? element.getElement(this.options.handle) || element : element).addEvent('mousedown', start);

        }, this);

        return this;

    },



    addLists: function(){

        Array.flatten(arguments).each(function(list){

            this.lists.push(list);

            this.addItems(list.getChildren());

        }, this);

        return this;

    },



    removeItems: function(){

        var elements = [];

        Array.flatten(arguments).each(function(element){

            elements.push(element);

            this.elements.erase(element);

            var start = element.retrieve('sortables:start');

            (this.options.handle ? element.getElement(this.options.handle) || element : element).removeEvent('mousedown', start);

        }, this);

        return $$(elements);

    },



    removeLists: function(){

        var lists = [];

        Array.flatten(arguments).each(function(list){

            lists.push(list);

            this.lists.erase(list);

            this.removeItems(list.getChildren());

        }, this);

        return $$(lists);

    },



    getClone: function(event, element){

        if (!this.options.clone) return new Element('div').inject(document.body);

        if ($type(this.options.clone) == 'function') return this.options.clone.call(this, event, element, this.list);

        return element.clone(true).setStyles({

            'margin': '0px',

            'position': 'absolute',

            'visibility': 'hidden',

            'width': element.getStyle('width')

        }).inject(this.list).position(element.getPosition(element.getOffsetParent()));

    },



    getDroppables: function(){

        var droppables = this.list.getChildren();

        if (!this.options.constrain) droppables = this.lists.concat(droppables).erase(this.list);

        return droppables.erase(this.clone).erase(this.element);

    },



    insert: function(dragging, element){

        var where = 'inside';

        if (this.lists.contains(element)){

            this.list = element;

            this.drag.droppables = this.getDroppables();

        } else {

            where = this.element.getAllPrevious().contains(element) ? 'before' : 'after';

        }

        this.element.inject(element, where);

        this.fireEvent('sort', [this.element, this.clone]);

    },



    start: function(event, element){

        if (!this.idle) return;

        this.idle = false;

        this.element = element;

        this.opacity = element.get('opacity');

        this.list = element.getParent();

        this.clone = this.getClone(event, element);

        

        this.drag = new Drag.Move(this.clone, {

            snap: this.options.snap,

            container: this.options.constrain && this.element.getParent(),

            droppables: this.getDroppables(),

            onSnap: function(){

                event.stop();

                this.clone.setStyle('visibility', 'visible');

                this.element.set('opacity', this.options.opacity || 0);

                this.fireEvent('start', [this.element, this.clone]);

            }.bind(this),

            onEnter: this.insert.bind(this),

            onCancel: this.reset.bind(this),

            onComplete: this.end.bind(this)

        });

        

        this.clone.inject(this.element, 'before');

        this.drag.start(event);

    },



    end: function(){

        this.drag.detach();

        this.element.set('opacity', this.opacity);

        if (this.effect){

            var dim = this.element.getStyles('width', 'height');

            var pos = this.clone.computePosition(this.element.getPosition(this.clone.offsetParent));

            this.effect.element = this.clone;

            this.effect.start({

                top: pos.top,

                left: pos.left,

                width: dim.width,

                height: dim.height,

                opacity: 0.25

            }).chain(this.reset.bind(this));

        } else {

            this.reset();

        }

    },



    reset: function(){

        this.idle = true;

        this.clone.destroy();

        this.fireEvent('complete', this.element);

    },



    serialize: function(){

        var params = Array.link(arguments, {modifier: Function.type, index: $defined});

        var serial = this.lists.map(function(list){

            return list.getChildren().map(params.modifier || function(element){

                return element.get('id');

            }, this);

        }, this);

        

        var index = params.index;

        if (this.lists.length == 1) index = 0;

        return $chk(index) && index >= 0 && index < this.lists.length ? serial[index] : serial;

    }



});



/*

Script: Tips.js

    Class for creating nice tips that follow the mouse cursor when hovering an element.



License:

    MIT-style license.

*/



var Tips = new Class({



    Implements: [Events, Options],



    options: {

        onShow: function(tip){

            tip.setStyle('visibility', 'visible');

        },

        onHide: function(tip){

            tip.setStyle('visibility', 'hidden');

        },

        showDelay: 100,

        hideDelay: 100,

        className: null,

        offsets: {x: 16, y: 16},

        fixed: false

    },



    initialize: function(){

        var params = Array.link(arguments, {options: Object.type, elements: $defined});

        this.setOptions(params.options || null);

        

        this.tip = new Element('div').inject(document.body);

        

        if (this.options.className) this.tip.addClass(this.options.className);

        

        var top = new Element('div', {'class': 'tip-top'}).inject(this.tip);

        this.container = new Element('div', {'class': 'tip'}).inject(this.tip);

        var bottom = new Element('div', {'class': 'tip-bottom'}).inject(this.tip);



        this.tip.setStyles({position: 'absolute', top: 0, left: 0, visibility: 'hidden'});

        

        if (params.elements) this.attach(params.elements);

    },

    

    attach: function(elements){

        $$(elements).each(function(element){

            var title = element.retrieve('tip:title', element.get('title'));

            var text = element.retrieve('tip:text', element.get('rel') || element.get('href'));

            var enter = element.retrieve('tip:enter', this.elementEnter.bindWithEvent(this, element));

            var leave = element.retrieve('tip:leave', this.elementLeave.bindWithEvent(this, element));

            element.addEvents({mouseenter: enter, mouseleave: leave});

            if (!this.options.fixed){

                var move = element.retrieve('tip:move', this.elementMove.bindWithEvent(this, element));

                element.addEvent('mousemove', move);

            }

            element.store('tip:native', element.get('title'));

            element.erase('title');

        }, this);

        return this;

    },

    

    detach: function(elements){

        $$(elements).each(function(element){

            element.removeEvent('mouseenter', element.retrieve('tip:enter') || $empty);

            element.removeEvent('mouseleave', element.retrieve('tip:leave') || $empty);

            element.removeEvent('mousemove', element.retrieve('tip:move') || $empty);

            element.eliminate('tip:enter').eliminate('tip:leave').eliminate('tip:move');

            var original = element.retrieve('tip:native');

            if (original) element.set('title', original);

        });

        return this;

    },

    

    elementEnter: function(event, element){

        

        $A(this.container.childNodes).each(Element.dispose);

        

        var title = element.retrieve('tip:title');

        

        if (title){

            this.titleElement = new Element('div', {'class': 'tip-title'}).inject(this.container);

            this.fill(this.titleElement, title);

        }

        

        var text = element.retrieve('tip:text');

        if (text){

            this.textElement = new Element('div', {'class': 'tip-text'}).inject(this.container);

            this.fill(this.textElement, text);

        }

        

        this.timer = $clear(this.timer);

        this.timer = this.show.delay(this.options.showDelay, this);



        this.position((!this.options.fixed) ? event : {page: element.getPosition()});

    },

    

    elementLeave: function(event){

        $clear(this.timer);

        this.timer = this.hide.delay(this.options.hideDelay, this);

    },

    

    elementMove: function(event){

        this.position(event);

    },

    

    position: function(event){

        var size = window.getSize(), scroll = window.getScroll();

        var tip = {x: this.tip.offsetWidth, y: this.tip.offsetHeight};

        var props = {x: 'left', y: 'top'};

        for (var z in props){

            var pos = event.page[z] + this.options.offsets[z];

            if ((pos + tip[z] - scroll[z]) > size[z]) pos = event.page[z] - this.options.offsets[z] - tip[z];

            this.tip.setStyle(props[z], pos);

        }

    },

    

    fill: function(element, contents){

        (typeof contents == 'string') ? element.set('html', contents) : element.adopt(contents);

    },



    show: function(){

        this.fireEvent('show', this.tip);

    },



    hide: function(){

        this.fireEvent('hide', this.tip);

    }



});



/*

Script: SmoothScroll.js

    Class for creating a smooth scrolling effect to all internal links on the page.



License:

    MIT-style license.

*/



var SmoothScroll = new Class({



    Extends: Fx.Scroll,



    initialize: function(options, context){

        context = context || document;

        var doc = context.getDocument(), win = context.getWindow();

        this.parent(doc, options);

        this.links = (this.options.links) ? $$(this.options.links) : $$(doc.links);

        var location = win.location.href.match(/^[^#]*/)[0] + '#';

        this.links.each(function(link){

            if (link.href.indexOf(location) != 0) return;

            var anchor = link.href.substr(location.length);

            if (anchor && $(anchor)) this.useLink(link, anchor);

        }, this);

        if (!Browser.Engine.webkit419) this.addEvent('complete', function(){

            win.location.hash = this.anchor;

        }, true);

    },



    useLink: function(link, anchor){

        link.addEvent('click', function(event){

            this.anchor = anchor;

            this.toElement(anchor);

            event.stop();

        }.bind(this));

    }



});



/*

Script: Slider.js

    Class for creating horizontal and vertical slider controls.



License:

    MIT-style license.

*/



var Slider = new Class({



    Implements: [Events, Options],



    options: {/*

        onChange: $empty,

        onComplete: $empty,*/

        onTick: function(position){

            if(this.options.snap) position = this.toPosition(this.step);

            this.knob.setStyle(this.property, position);

        },

        snap: false,

        offset: 0,

        range: false,

        wheel: false,

        steps: 100,

        mode: 'horizontal'

    },



    initialize: function(element, knob, options){

        this.setOptions(options);

        this.element = $(element);

        this.knob = $(knob);

        this.previousChange = this.previousEnd = this.step = -1;

        this.element.addEvent('mousedown', this.clickedElement.bind(this));

        if (this.options.wheel) this.element.addEvent('mousewheel', this.scrolledElement.bindWithEvent(this));

        var offset, limit = {}, modifiers = {'x': false, 'y': false};

        switch (this.options.mode){

            case 'vertical':

                this.axis = 'y';

                this.property = 'top';

                offset = 'offsetHeight';

                break;

            case 'horizontal':

                this.axis = 'x';

                this.property = 'left';

                offset = 'offsetWidth';

        }

        this.half = this.knob[offset] / 2;

        this.full = this.element[offset] - this.knob[offset] + (this.options.offset * 2);

        this.min = $chk(this.options.range[0]) ? this.options.range[0] : 0;

        this.max = $chk(this.options.range[1]) ? this.options.range[1] : this.options.steps;

        this.range = this.max - this.min;

        this.steps = this.options.steps || this.full;

        this.stepSize = Math.abs(this.range) / this.steps;

        this.stepWidth = this.stepSize * this.full / Math.abs(this.range) ;

        

        this.knob.setStyle('position', 'relative').setStyle(this.property, - this.options.offset);

        modifiers[this.axis] = this.property;

        limit[this.axis] = [- this.options.offset, this.full - this.options.offset];

        this.drag = new Drag(this.knob, {

            snap: 0,

            limit: limit,

            modifiers: modifiers,

            onDrag: this.draggedKnob.bind(this),

            onStart: this.draggedKnob.bind(this),

            onComplete: function(){

                this.draggedKnob();

                this.end();

            }.bind(this)

        });

        if (this.options.snap) {

            this.drag.options.grid = Math.ceil(this.stepWidth);

            this.drag.options.limit[this.axis][1] = this.full;

        }

    },



    set: function(step){

        if (!((this.range > 0) ^ (step < this.min))) step = this.min;

        if (!((this.range > 0) ^ (step > this.max))) step = this.max;

        

        this.step = Math.round(step);

        this.checkStep();

        this.end();

        this.fireEvent('tick', this.toPosition(this.step));

        return this;

    },



    clickedElement: function(event){

        var dir = this.range < 0 ? -1 : 1;

        var position = event.page[this.axis] - this.element.getPosition()[this.axis] - this.half;

        position = position.limit(-this.options.offset, this.full -this.options.offset);

        

        this.step = Math.round(this.min + dir * this.toStep(position));

        this.checkStep();

        this.end();

        this.fireEvent('tick', position);

    },

    

    scrolledElement: function(event){

        var mode = (this.options.mode == 'horizontal') ? (event.wheel < 0) : (event.wheel > 0);

        this.set(mode ? this.step - this.stepSize : this.step + this.stepSize);

        event.stop();

    },



    draggedKnob: function(){

        var dir = this.range < 0 ? -1 : 1;

        var position = this.drag.value.now[this.axis];

        position = position.limit(-this.options.offset, this.full -this.options.offset);

        this.step = Math.round(this.min + dir * this.toStep(position));

        this.checkStep();

    },



    checkStep: function(){

        if (this.previousChange != this.step){

            this.previousChange = this.step;

            this.fireEvent('change', this.step);

        }

    },



    end: function(){

        if (this.previousEnd !== this.step){

            this.previousEnd = this.step;

            this.fireEvent('complete', this.step + '');

        }

    },



    toStep: function(position){

        var step = (position + this.options.offset) * this.stepSize / this.full * this.steps;

        return this.options.steps ? Math.round(step -= step % this.stepSize) : step;

    },



    toPosition: function(step){

        return (this.full * Math.abs(this.min - step)) / (this.steps * this.stepSize) - this.options.offset;

    }



});



/*

Script: Scroller.js

    Class which scrolls the contents of any Element (including the window) when the mouse reaches the Element's boundaries.



License:

    MIT-style license.

*/



var Scroller = new Class({



    Implements: [Events, Options],



    options: {

        area: 20,

        velocity: 1,

        onChange: function(x, y){

            this.element.scrollTo(x, y);

        }

    },



    initialize: function(element, options){

        this.setOptions(options);

        this.element = $(element);

        this.listener = ($type(this.element) != 'element') ? $(this.element.getDocument().body) : this.element;

        this.timer = null;

        this.coord = this.getCoords.bind(this);

    },



    start: function(){

        this.listener.addEvent('mousemove', this.coord);

    },



    stop: function(){

        this.listener.removeEvent('mousemove', this.coord);

        this.timer = $clear(this.timer);

    },



    getCoords: function(event){

        this.page = (this.listener.get('tag') == 'body') ? event.client : event.page;

        if (!this.timer) this.timer = this.scroll.periodical(50, this);

    },



    scroll: function(){

        var size = this.element.getSize(), scroll = this.element.getScroll(), pos = this.element.getPosition(), change = {'x': 0, 'y': 0};

        for (var z in this.page){

            if (this.page[z] < (this.options.area + pos[z]) && scroll[z] != 0)

                change[z] = (this.page[z] - this.options.area - pos[z]) * this.options.velocity;

            else if (this.page[z] + this.options.area > (size[z] + pos[z]) && size[z] + size[z] != scroll[z])

                change[z] = (this.page[z] - size[z] + this.options.area - pos[z]) * this.options.velocity;

        }

        if (change.y || change.x) this.fireEvent('change', [scroll.x + change.x, scroll.y + change.y]);

    }



});



/*

Script: Accordion.js

    An Fx.Elements extension which allows you to easily create accordion type controls.



License:

    MIT-style license.

*/



var Accordion = new Class({



    Extends: Fx.Elements,



    options: {/*

        onActive: $empty,

        onBackground: $empty,*/

        display: 0,

        show: false,

        height: true,

        width: false,

        opacity: true,

        fixedHeight: false,

        fixedWidth: false,

        wait: false,

        alwaysHide: false

    },



    initialize: function(){

        var params = Array.link(arguments, {'container': Element.type, 'options': Object.type, 'togglers': $defined, 'elements': $defined});

        this.parent(params.elements, params.options);

        this.togglers = $$(params.togglers);

        this.container = $(params.container);

        this.previous = -1;

        if (this.options.alwaysHide) this.options.wait = true;

        if ($chk(this.options.show)){

            this.options.display = false;

            this.previous = this.options.show;

        }

        if (this.options.start){

            this.options.display = false;

            this.options.show = false;

        }

        this.effects = {};

        if (this.options.opacity) this.effects.opacity = 'fullOpacity';

        if (this.options.width) this.effects.width = this.options.fixedWidth ? 'fullWidth' : 'offsetWidth';

        if (this.options.height) this.effects.height = this.options.fixedHeight ? 'fullHeight' : 'scrollHeight';

        for (var i = 0, l = this.togglers.length; i < l; i++) this.addSection(this.togglers[i], this.elements[i]);

        this.elements.each(function(el, i){

            if (this.options.show === i){

                this.fireEvent('active', [this.togglers[i], el]);

            } else {

                for (var fx in this.effects) el.setStyle(fx, 0);

            }

        }, this);

        if ($chk(this.options.display)) this.display(this.options.display);

    },



    addSection: function(toggler, element, pos){

        toggler = $(toggler);

        element = $(element);

        var test = this.togglers.contains(toggler);

        var len = this.togglers.length;

        this.togglers.include(toggler);

        this.elements.include(element);

        if (len && (!test || pos)){

            pos = $pick(pos, len - 1);

            toggler.inject(this.togglers[pos], 'before');

            element.inject(toggler, 'after');

        } else if (this.container && !test){

            toggler.inject(this.container);

            element.inject(this.container);

        }

        var idx = this.togglers.indexOf(toggler);

        toggler.addEvent('click', this.display.bind(this, idx));

        if (this.options.height) element.setStyles({'padding-top': 0, 'border-top': 'none', 'padding-bottom': 0, 'border-bottom': 'none'});

        if (this.options.width) element.setStyles({'padding-left': 0, 'border-left': 'none', 'padding-right': 0, 'border-right': 'none'});

        element.fullOpacity = 1;

        if (this.options.fixedWidth) element.fullWidth = this.options.fixedWidth;

        if (this.options.fixedHeight) element.fullHeight = this.options.fixedHeight;

        element.setStyle('overflow', 'hidden');

        if (!test){

            for (var fx in this.effects) element.setStyle(fx, 0);

        }

        return this;

    },



    display: function(index){

        index = ($type(index) == 'element') ? this.elements.indexOf(index) : index;

        if ((this.timer && this.options.wait) || (index === this.previous && !this.options.alwaysHide)) return this;

        this.previous = index;

        var obj = {};

        this.elements.each(function(el, i){

            obj[i] = {};

            var hide = (i != index) || (this.options.alwaysHide && (el.offsetHeight > 0));

            this.fireEvent(hide ? 'background' : 'active', [this.togglers[i], el]);

            for (var fx in this.effects) obj[i][fx] = hide ? 0 : el[this.effects[fx]];

        }, this);

        return this.start(obj);

    }



});