//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);
        }

});