// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// Contributors:
//  Justin Palmer (http://encytemedia.com/)
//  Mark Pilgrim (http://diveintomark.org/)
//  Martin Bialasinki
// 
// See scriptaculous.js for full license.  

/* ------------- element ext -------------- */

// converts rgb() and #xxx to #xxxxxx format,  
// returns self (or first argument) if not convertable  
String.prototype.parseColor = function() {
    var color = '#';
    if (this.slice(0, 4) == 'rgb(') {
        var cols = this.slice(4, this.length - 1).split(',');
        var i = 0; do { color += parseInt(cols[i]).toColorPart() } while (++i < 3);
    } else {
        if (this.slice(0, 1) == '#') {
            if (this.length == 4) for (var i = 1; i < 4; i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();
            if (this.length == 7) color = this.toLowerCase();
        }
    }
    return (color.length == 7 ? color : (arguments[0] || this));
}

Element.collectTextNodes = function(element) {
    return $A($(element).childNodes).collect(function(node) {
        return (node.nodeType == 3 ? node.nodeValue :
      (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
    }).flatten().join('');
}

Element.collectTextNodesIgnoreClass = function(element, className) {
    return $A($(element).childNodes).collect(function(node) {
        return (node.nodeType == 3 ? node.nodeValue :
      ((node.hasChildNodes() && !Element.hasClassName(node, className)) ?
        Element.collectTextNodes(node) : ''));
    }).flatten().join('');
}

Element.setStyle = function(element, style) {
    element = $(element);
    for (k in style) element.style[k.camelize()] = style[k];
}

Element.setContentZoom = function(element, percent) {
    Element.setStyle(element, { fontSize: (percent / 100) + 'em' });
    if (navigator.appVersion.indexOf('AppleWebKit') > 0) window.scrollBy(0, 0);
}

Element.getOpacity = function(element) {
    var opacity;
    if (opacity = Element.getStyle(element, 'opacity'))
        return parseFloat(opacity);
    if (opacity = (Element.getStyle(element, 'filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (opacity[1]) return parseFloat(opacity[1]) / 100;
    return 1.0;
}

Element.setOpacity = function(element, value) {
    element = $(element);
    if (value == 1) {
        Element.setStyle(element, { opacity:
      (/Gecko/.test(navigator.userAgent) && !/Konqueror|Safari|KHTML/.test(navigator.userAgent)) ?
      0.999999 : null
        });
        if (/MSIE/.test(navigator.userAgent))
            Element.setStyle(element, { filter: Element.getStyle(element, 'filter').replace(/alpha\([^\)]*\)/gi, '') });
    } else {
        if (value < 0.00001) value = 0;
        Element.setStyle(element, { opacity: value });
        if (/MSIE/.test(navigator.userAgent))
            Element.setStyle(element,
        { filter: Element.getStyle(element, 'filter').replace(/alpha\([^\)]*\)/gi, '') +
                 'alpha(opacity=' + value * 100 + ')'
        });
    }
}

Element.getInlineOpacity = function(element) {
    return $(element).style.opacity || '';
}

Element.childrenWithClassName = function(element, className) {
    return $A($(element).getElementsByTagName('*')).select(
    function(c) { return Element.hasClassName(c, className) });
}

Array.prototype.call = function() {
    var args = arguments;
    this.each(function(f) { f.apply(this, args) });
}

/*--------------------------------------------------------------------------*/

var Effect = {
    tagifyText: function(element) {
        var tagifyStyle = 'position:relative';
        if (/MSIE/.test(navigator.userAgent)) tagifyStyle += ';zoom:1';
        element = $(element);
        $A(element.childNodes).each(function(child) {
            if (child.nodeType == 3) {
                child.nodeValue.toArray().each(function(character) {
                    element.insertBefore(
            Builder.node('span', { style: tagifyStyle },
              character == ' ' ? String.fromCharCode(160) : character),
              child);
                });
                Element.remove(child);
            }
        });
    },
    multiple: function(element, effect) {
        var elements;
        if (((typeof element == 'object') ||
        (typeof element == 'function')) &&
       (element.length))
            elements = element;
        else
            elements = $(element).childNodes;

        var options = Object.extend({
            speed: 0.1,
            delay: 0.0
        }, arguments[2] || {});
        var masterDelay = options.delay;

        $A(elements).each(function(element, index) {
            new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
        });
    },
    PAIRS: {
        'slide': ['SlideDown', 'SlideUp'],
        'blind': ['BlindDown', 'BlindUp'],
        'appear': ['Appear', 'Fade']
    },
    toggle: function(element, effect) {
        element = $(element);
        effect = (effect || 'appear').toLowerCase();
        var options = Object.extend({
            queue: { position: 'end', scope: (element.id || 'global') }
        }, arguments[2] || {});
        Effect[Element.visible(element) ?
      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
    }
};

var Effect2 = Effect; // deprecated

/* ------------- transitions ------------- */

Effect.Transitions = {}

Effect.Transitions.linear = function(pos) {
    return pos;
}
Effect.Transitions.sinoidal = function(pos) {
    return (-Math.cos(pos * Math.PI) / 2) + 0.5;
}
Effect.Transitions.reverse = function(pos) {
    return 1 - pos;
}
Effect.Transitions.flicker = function(pos) {
    return ((-Math.cos(pos * Math.PI) / 4) + 0.75) + Math.random() / 4;
}
Effect.Transitions.wobble = function(pos) {
    return (-Math.cos(pos * Math.PI * (9 * pos)) / 2) + 0.5;
}
Effect.Transitions.pulse = function(pos) {
    return (Math.floor(pos * 10) % 2 == 0 ?
    (pos * 10 - Math.floor(pos * 10)) : 1 - (pos * 10 - Math.floor(pos * 10)));
}
Effect.Transitions.none = function(pos) {
    return 0;
}
Effect.Transitions.full = function(pos) {
    return 1;
}

/* ------------- core effects ------------- */

Effect.ScopedQueue = Class.create();
Object.extend(Object.extend(Effect.ScopedQueue.prototype, Enumerable), {
    initialize: function() {
        this.effects = [];
        this.interval = null;
    },
    _each: function(iterator) {
        this.effects._each(iterator);
    },
    add: function(effect) {
        var timestamp = new Date().getTime();

        var position = (typeof effect.options.queue == 'string') ?
      effect.options.queue : effect.options.queue.position;

        switch (position) {
            case 'front':
                // move unstarted effects after this effect  
                this.effects.findAll(function(e) { return e.state == 'idle' }).each(function(e) {
                    e.startOn += effect.finishOn;
                    e.finishOn += effect.finishOn;
                });
                break;
            case 'end':
                // start effect after last queued effect has finished
                timestamp = this.effects.pluck('finishOn').max() || timestamp;
                break;
        }

        effect.startOn += timestamp;
        effect.finishOn += timestamp;
        this.effects.push(effect);
        if (!this.interval)
            this.interval = setInterval(this.loop.bind(this), 40);
    },
    remove: function(effect) {
        this.effects = this.effects.reject(function(e) { return e == effect });
        if (this.effects.length == 0) {
            clearInterval(this.interval);
            this.interval = null;
        }
    },
    loop: function() {
        var timePos = new Date().getTime();
        this.effects.invoke('loop', timePos);
    }
});

Effect.Queues = {
    instances: $H(),
    get: function(queueName) {
        if (typeof queueName != 'string') return queueName;

        if (!this.instances[queueName])
            this.instances[queueName] = new Effect.ScopedQueue();

        return this.instances[queueName];
    }
}
Effect.Queue = Effect.Queues.get('global');

Effect.DefaultOptions = {
    transition: Effect.Transitions.sinoidal,
    duration: 1.0,   // seconds
    fps: 25.0,  // max. 25fps due to Effect.Queue implementation
    sync: false, // true for combining
    from: 0.0,
    to: 1.0,
    delay: 0.0,
    queue: 'parallel'
}

Effect.Base = function() { };
Effect.Base.prototype = {
    position: null,
    start: function(options) {
        this.options = Object.extend(Object.extend({}, Effect.DefaultOptions), options || {});
        this.currentFrame = 0;
        this.state = 'idle';
        this.startOn = this.options.delay * 1000;
        this.finishOn = this.startOn + (this.options.duration * 1000);
        this.event('beforeStart');
        if (!this.options.sync)
            Effect.Queues.get(typeof this.options.queue == 'string' ?
        'global' : this.options.queue.scope).add(this);
    },
    loop: function(timePos) {
        if (timePos >= this.startOn) {
            if (timePos >= this.finishOn) {
                this.render(1.0);
                this.cancel();
                this.event('beforeFinish');
                if (this.finish) this.finish();
                this.event('afterFinish');
                return;
            }
            var pos = (timePos - this.startOn) / (this.finishOn - this.startOn);
            var frame = Math.round(pos * this.options.fps * this.options.duration);
            if (frame > this.currentFrame) {
                this.render(pos);
                this.currentFrame = frame;
            }
        }
    },
    render: function(pos) {
        if (this.state == 'idle') {
            this.state = 'running';
            this.event('beforeSetup');
            if (this.setup) this.setup();
            this.event('afterSetup');
        }
        if (this.state == 'running') {
            if (this.options.transition) pos = this.options.transition(pos);
            pos *= (this.options.to - this.options.from);
            pos += this.options.from;
            this.position = pos;
            this.event('beforeUpdate');
            if (this.update) this.update(pos);
            this.event('afterUpdate');
        }
    },
    cancel: function() {
        if (!this.options.sync)
            Effect.Queues.get(typeof this.options.queue == 'string' ?
        'global' : this.options.queue.scope).remove(this);
        this.state = 'finished';
    },
    event: function(eventName) {
        if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
        if (this.options[eventName]) this.options[eventName](this);
    },
    inspect: function() {
        return '#<Effect:' + $H(this).inspect() + ',options:' + $H(this.options).inspect() + '>';
    }
}

Effect.Parallel = Class.create();
Object.extend(Object.extend(Effect.Parallel.prototype, Effect.Base.prototype), {
    initialize: function(effects) {
        this.effects = effects || [];
        this.start(arguments[1]);
    },
    update: function(position) {
        this.effects.invoke('render', position);
    },
    finish: function(position) {
        this.effects.each(function(effect) {
            effect.render(1.0);
            effect.cancel();
            effect.event('beforeFinish');
            if (effect.finish) effect.finish(position);
            effect.event('afterFinish');
        });
    }
});

Effect.Opacity = Class.create();
Object.extend(Object.extend(Effect.Opacity.prototype, Effect.Base.prototype), {
    initialize: function(element) {
        this.element = $(element);
        // make this work on IE on elements without 'layout'
        if (/MSIE/.test(navigator.userAgent) && (!this.element.hasLayout))
            Element.setStyle(this.element, { zoom: 1 });
        var options = Object.extend({
            from: Element.getOpacity(this.element) || 0.0,
            to: 1.0
        }, arguments[1] || {});
        this.start(options);
    },
    update: function(position) {
        Element.setOpacity(this.element, position);
    }
});

Effect.Move = Class.create();
Object.extend(Object.extend(Effect.Move.prototype, Effect.Base.prototype), {
    initialize: function(element) {
        this.element = $(element);
        var options = Object.extend({
            x: 0,
            y: 0,
            mode: 'relative'
        }, arguments[1] || {});
        this.start(options);
    },
    setup: function() {
        // Bug in Opera: Opera returns the "real" position of a static element or
        // relative element that does not have top/left explicitly set.
        // ==> Always set top and left for position relative elements in your stylesheets 
        // (to 0 if you do not need them) 
        Element.makePositioned(this.element);
        this.originalLeft = parseFloat(Element.getStyle(this.element, 'left') || '0');
        this.originalTop = parseFloat(Element.getStyle(this.element, 'top') || '0');
        if (this.options.mode == 'absolute') {
            // absolute movement, so we need to calc deltaX and deltaY
            this.options.x = this.options.x - this.originalLeft;
            this.options.y = this.options.y - this.originalTop;
        }
    },
    update: function(position) {
        Element.setStyle(this.element, {
            left: this.options.x * position + this.originalLeft + 'px',
            top: this.options.y * position + this.originalTop + 'px'
        });
    }
});

// for backwards compatibility
Effect.MoveBy = function(element, toTop, toLeft) {
    return new Effect.Move(element,
    Object.extend({ x: toLeft, y: toTop }, arguments[3] || {}));
};

Effect.Scale = Class.create();
Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {
    initialize: function(element, percent) {
        this.element = $(element)
        var options = Object.extend({
            scaleX: true,
            scaleY: true,
            scaleContent: true,
            scaleFromCenter: false,
            scaleMode: 'box',        // 'box' or 'contents' or {} with provided values
            scaleFrom: 100.0,
            scaleTo: percent
        }, arguments[2] || {});
        this.start(options);
    },
    setup: function() {
        this.restoreAfterFinish = this.options.restoreAfterFinish || false;
        this.elementPositioning = Element.getStyle(this.element, 'position');

        this.originalStyle = {};
        ['top', 'left', 'width', 'height', 'fontSize'].each(function(k) {
            this.originalStyle[k] = this.element.style[k];
        } .bind(this));

        this.originalTop = this.element.offsetTop;
        this.originalLeft = this.element.offsetLeft;

        var fontSize = Element.getStyle(this.element, 'font-size') || '100%';
        ['em', 'px', '%'].each(function(fontSizeType) {
            if (fontSize.indexOf(fontSizeType) > 0) {
                this.fontSize = parseFloat(fontSize);
                this.fontSizeType = fontSizeType;
            }
        } .bind(this));

        this.factor = (this.options.scaleTo - this.options.scaleFrom) / 100;

        this.dims = null;
        if (this.options.scaleMode == 'box')
            this.dims = [this.element.offsetHeight, this.element.offsetWidth];
        if (/^content/.test(this.options.scaleMode))
            this.dims = [this.element.scrollHeight, this.element.scrollWidth];
        if (!this.dims)
            this.dims = [this.options.scaleMode.originalHeight,
                   this.options.scaleMode.originalWidth];
    },
    update: function(position) {
        var currentScale = (this.options.scaleFrom / 100.0) + (this.factor * position);
        if (this.options.scaleContent && this.fontSize)
            Element.setStyle(this.element, { fontSize: this.fontSize * currentScale + this.fontSizeType });
        this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
    },
    finish: function(position) {
        if (this.restoreAfterFinish) Element.setStyle(this.element, this.originalStyle);
    },
    setDimensions: function(height, width) {
        var d = {};
        if (this.options.scaleX) d.width = width + 'px';
        if (this.options.scaleY) d.height = height + 'px';
        if (this.options.scaleFromCenter) {
            var topd = (height - this.dims[0]) / 2;
            var leftd = (width - this.dims[1]) / 2;
            if (this.elementPositioning == 'absolute') {
                if (this.options.scaleY) d.top = this.originalTop - topd + 'px';
                if (this.options.scaleX) d.left = this.originalLeft - leftd + 'px';
            } else {
                if (this.options.scaleY) d.top = -topd + 'px';
                if (this.options.scaleX) d.left = -leftd + 'px';
            }
        }
        Element.setStyle(this.element, d);
    }
});

Effect.Highlight = Class.create();
Object.extend(Object.extend(Effect.Highlight.prototype, Effect.Base.prototype), {
    initialize: function(element) {
        this.element = $(element);
        var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || {});
        this.start(options);
    },
    setup: function() {
        // Prevent executing on elements not in the layout flow
        if (Element.getStyle(this.element, 'display') == 'none') { this.cancel(); return; }
        // Disable background image during the effect
        this.oldStyle = {
            backgroundImage: Element.getStyle(this.element, 'background-image')
        };
        Element.setStyle(this.element, { backgroundImage: 'none' });
        if (!this.options.endcolor)
            this.options.endcolor = Element.getStyle(this.element, 'background-color').parseColor('#ffffff');
        if (!this.options.restorecolor)
            this.options.restorecolor = Element.getStyle(this.element, 'background-color');
        // init color calculations
        this._base = $R(0, 2).map(function(i) { return parseInt(this.options.startcolor.slice(i * 2 + 1, i * 2 + 3), 16) } .bind(this));
        this._delta = $R(0, 2).map(function(i) { return parseInt(this.options.endcolor.slice(i * 2 + 1, i * 2 + 3), 16) - this._base[i] } .bind(this));
    },
    update: function(position) {
        Element.setStyle(this.element, { backgroundColor: $R(0, 2).inject('#', function(m, v, i) {
                return m + (Math.round(this._base[i] + (this._delta[i] * position)).toColorPart());
            } .bind(this))
        });
    },
    finish: function() {
        Element.setStyle(this.element, Object.extend(this.oldStyle, {
            backgroundColor: this.options.restorecolor
        }));
    }
});

Effect.ScrollTo = Class.create();
Object.extend(Object.extend(Effect.ScrollTo.prototype, Effect.Base.prototype), {
    initialize: function(element) {
        this.element = $(element);
        this.start(arguments[1] || {});
    },
    setup: function() {
        Position.prepare();
        var offsets = Position.cumulativeOffset(this.element);
        if (this.options.offset) offsets[1] += this.options.offset;
        var max = window.innerHeight ?
      window.height - window.innerHeight :
      document.body.scrollHeight -
        (document.documentElement.clientHeight ?
          document.documentElement.clientHeight : document.body.clientHeight);
        this.scrollStart = Position.deltaY;
        this.delta = (offsets[1] > max ? max : offsets[1]) - this.scrollStart;
    },
    update: function(position) {
        Position.prepare();
        window.scrollTo(Position.deltaX,
      this.scrollStart + (position * this.delta));
    }
});

/* ------------- combination effects ------------- */

Effect.Fade = function(element) {
    var oldOpacity = Element.getInlineOpacity(element);
    var options = Object.extend({
        from: Element.getOpacity(element) || 1.0,
        to: 0.0,
        afterFinishInternal: function(effect) {
            with (Element) {
                if (effect.options.to != 0) return;
                hide(effect.element);
                setStyle(effect.element, { opacity: oldOpacity });
            } 
        }
    }, arguments[1] || {});
    return new Effect.Opacity(element, options);
}

Effect.Appear = function(element) {
    var options = Object.extend({
        from: (Element.getStyle(element, 'display') == 'none' ? 0.0 : Element.getOpacity(element) || 0.0),
        to: 1.0,
        beforeSetup: function(effect) {
            with (Element) {
                setOpacity(effect.element, effect.options.from);
                show(effect.element);
            } 
        }
    }, arguments[1] || {});
    return new Effect.Opacity(element, options);
}

Effect.Puff = function(element) {
    element = $(element);
    var oldStyle = { opacity: Element.getInlineOpacity(element), position: Element.getStyle(element, 'position') };
    return new Effect.Parallel(
   [new Effect.Scale(element, 200,
    { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }),
     new Effect.Opacity(element, { sync: true, to: 0.0 })],
     Object.extend({ duration: 1.0,
        beforeSetupInternal: function(effect) {
            with (Element) {
                setStyle(effect.effects[0].element, { position: 'absolute' });
            } 
        },
        afterFinishInternal: function(effect) {
            with (Element) {
                hide(effect.effects[0].element);
                setStyle(effect.effects[0].element, oldStyle);
            } 
        }
    }, arguments[1] || {})
   );
}

Effect.BlindUp = function(element) {
    element = $(element);
    Element.makeClipping(element);
    return new Effect.Scale(element, 0,
    Object.extend({ scaleContent: false,
        scaleX: false,
        restoreAfterFinish: true,
        afterFinishInternal: function(effect) {
            with (Element) {
                [hide, undoClipping].call(effect.element);
            } 
        }
    }, arguments[1] || {})
  );
}

Effect.BlindDown = function(element) {
    element = $(element);
    var oldHeight = Element.getStyle(element, 'height');
    var elementDimensions = Element.getDimensions(element);
    return new Effect.Scale(element, 100,
    Object.extend({ scaleContent: false,
        scaleX: false,
        scaleFrom: 0,
        scaleMode: { originalHeight: elementDimensions.height, originalWidth: elementDimensions.width },
        restoreAfterFinish: true,
        afterSetup: function(effect) {
            with (Element) {
                makeClipping(effect.element);
                setStyle(effect.element, { height: '0px' });
                show(effect.element);
            } 
        },
        afterFinishInternal: function(effect) {
            with (Element) {
                undoClipping(effect.element);
                setStyle(effect.element, { height: oldHeight });
            } 
        }
    }, arguments[1] || {})
  );
}

Effect.SwitchOff = function(element) {
    element = $(element);
    var oldOpacity = Element.getInlineOpacity(element);
    return new Effect.Appear(element, {
        duration: 0.4,
        from: 0,
        transition: Effect.Transitions.flicker,
        afterFinishInternal: function(effect) {
            new Effect.Scale(effect.element, 1, {
                duration: 0.3, scaleFromCenter: true,
                scaleX: false, scaleContent: false, restoreAfterFinish: true,
                beforeSetup: function(effect) {
                    with (Element) {
                        [makePositioned, makeClipping].call(effect.element);
                    } 
                },
                afterFinishInternal: function(effect) {
                    with (Element) {
                        [hide, undoClipping, undoPositioned].call(effect.element);
                        setStyle(effect.element, { opacity: oldOpacity });
                    } 
                }
            })
        }
    });
}

Effect.DropOut = function(element) {
    element = $(element);
    var oldStyle = {
        top: Element.getStyle(element, 'top'),
        left: Element.getStyle(element, 'left'),
        opacity: Element.getInlineOpacity(element)
    };
    return new Effect.Parallel(
    [new Effect.Move(element, { x: 0, y: 100, sync: true }),
      new Effect.Opacity(element, { sync: true, to: 0.0 })],
    Object.extend(
    { duration: 0.5,
        beforeSetup: function(effect) {
            with (Element) {
                makePositioned(effect.effects[0].element);
            } 
        },
        afterFinishInternal: function(effect) {
            with (Element) {
                [hide, undoPositioned].call(effect.effects[0].element);
                setStyle(effect.effects[0].element, oldStyle);
            } 
        }
    }, arguments[1] || {}));
}

Effect.Shake = function(element) {
    element = $(element);
    var oldStyle = {
        top: Element.getStyle(element, 'top'),
        left: Element.getStyle(element, 'left')
    };
    return new Effect.Move(element,
    { x: 20, y: 0, duration: 0.05, afterFinishInternal: function(effect) {
            new Effect.Move(effect.element,
            { x: -40, y: 0, duration: 0.1, afterFinishInternal: function(effect) {
                    new Effect.Move(effect.element,
                    { x: 40, y: 0, duration: 0.1, afterFinishInternal: function(effect) {
                            new Effect.Move(effect.element,
                            { x: -40, y: 0, duration: 0.1, afterFinishInternal: function(effect) {
                                    new Effect.Move(effect.element,
                                    { x: 40, y: 0, duration: 0.1, afterFinishInternal: function(effect) {
                                            new Effect.Move(effect.element,
                                            { x: -20, y: 0, duration: 0.05, afterFinishInternal: function(effect) {
                                                    with (Element) {
                                                        undoPositioned(effect.element);
                                                        setStyle(effect.element, oldStyle);
                                                    } 
                                                } 
                                            })
                                        } 
                                    })
                                } 
                            })
                        } 
                    })
                } 
            })
        } 
    });
}

Effect.SlideDown = function(element) {
    element = $(element);
    Element.cleanWhitespace(element);
    // SlideDown need to have the content of the element wrapped in a container element with fixed height!
    var oldInnerBottom = Element.getStyle(element.firstChild, 'bottom');
    var elementDimensions = Element.getDimensions(element);
    return new Effect.Scale(element, 100, Object.extend({
        scaleContent: false,
        scaleX: false,
        scaleFrom: 0,
        scaleMode: { originalHeight: elementDimensions.height, originalWidth: elementDimensions.width },
        restoreAfterFinish: true,
        afterSetup: function(effect) {
            with (Element) {
                makePositioned(effect.element);
                makePositioned(effect.element.firstChild);
                if (window.opera) setStyle(effect.element, { top: '' });
                makeClipping(effect.element);
                setStyle(effect.element, { height: '0px' });
                show(element);
            } 
        },
        afterUpdateInternal: function(effect) {
            with (Element) {
                setStyle(effect.element.firstChild, { bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px'
                });
            } 
        },
        afterFinishInternal: function(effect) {
            with (Element) {
                undoClipping(effect.element);
                undoPositioned(effect.element.firstChild);
                undoPositioned(effect.element);
                setStyle(effect.element.firstChild, { bottom: oldInnerBottom });
            } 
        }
    }, arguments[1] || {})
  );
}

Effect.SlideUp = function(element) {
    element = $(element);
    Element.cleanWhitespace(element);
    var oldInnerBottom = Element.getStyle(element.firstChild, 'bottom');
    return new Effect.Scale(element, 0,
   Object.extend({ scaleContent: false,
        scaleX: false,
        scaleMode: 'box',
        scaleFrom: 100,
        restoreAfterFinish: true,
        beforeStartInternal: function(effect) {
            with (Element) {
                makePositioned(effect.element);
                makePositioned(effect.element.firstChild);
                if (window.opera) setStyle(effect.element, { top: '' });
                makeClipping(effect.element);
                show(element);
            } 
        },
        afterUpdateInternal: function(effect) {
            with (Element) {
                setStyle(effect.element.firstChild, { bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px'
                });
            } 
        },
        afterFinishInternal: function(effect) {
            with (Element) {
                [hide, undoClipping].call(effect.element);
                undoPositioned(effect.element.firstChild);
                undoPositioned(effect.element);
                setStyle(effect.element.firstChild, { bottom: oldInnerBottom });
            } 
        }
    }, arguments[1] || {})
  );
}

// Bug in opera makes the TD containing this element expand for a instance after finish 
Effect.Squish = function(element) {
    return new Effect.Scale(element, window.opera ? 1 : 0,
    { restoreAfterFinish: true,
        beforeSetup: function(effect) {
            with (Element) {
                makeClipping(effect.element);
            } 
        },
        afterFinishInternal: function(effect) {
            with (Element) {
                hide(effect.element);
                undoClipping(effect.element);
            } 
        }
    });
}

Effect.Grow = function(element) {
    element = $(element);
    var options = Object.extend({
        direction: 'center',
        moveTransistion: Effect.Transitions.sinoidal,
        scaleTransition: Effect.Transitions.sinoidal,
        opacityTransition: Effect.Transitions.full
    }, arguments[1] || {});
    var oldStyle = {
        top: element.style.top,
        left: element.style.left,
        height: element.style.height,
        width: element.style.width,
        opacity: Element.getInlineOpacity(element)
    };

    var dims = Element.getDimensions(element);
    var initialMoveX, initialMoveY;
    var moveX, moveY;

    switch (options.direction) {
        case 'top-left':
            initialMoveX = initialMoveY = moveX = moveY = 0;
            break;
        case 'top-right':
            initialMoveX = dims.width;
            initialMoveY = moveY = 0;
            moveX = -dims.width;
            break;
        case 'bottom-left':
            initialMoveX = moveX = 0;
            initialMoveY = dims.height;
            moveY = -dims.height;
            break;
        case 'bottom-right':
            initialMoveX = dims.width;
            initialMoveY = dims.height;
            moveX = -dims.width;
            moveY = -dims.height;
            break;
        case 'center':
            initialMoveX = dims.width / 2;
            initialMoveY = dims.height / 2;
            moveX = -dims.width / 2;
            moveY = -dims.height / 2;
            break;
    }

    return new Effect.Move(element, {
        x: initialMoveX,
        y: initialMoveY,
        duration: 0.01,
        beforeSetup: function(effect) {
            with (Element) {
                hide(effect.element);
                makeClipping(effect.element);
                makePositioned(effect.element);
            } 
        },
        afterFinishInternal: function(effect) {
            new Effect.Parallel(
        [new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
          new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
          new Effect.Scale(effect.element, 100, {
                scaleMode: { originalHeight: dims.height, originalWidth: dims.width },
                sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true
            })
        ], Object.extend({
                beforeSetup: function(effect) {
                    with (Element) {
                        setStyle(effect.effects[0].element, { height: '0px' });
                        show(effect.effects[0].element);
                    } 
                },
                afterFinishInternal: function(effect) {
                    with (Element) {
                        [undoClipping, undoPositioned].call(effect.effects[0].element);
                        setStyle(effect.effects[0].element, oldStyle);
                    } 
                }
            }, options)
      )
        }
    });
}

Effect.Shrink = function(element) {
    element = $(element);
    var options = Object.extend({
        direction: 'center',
        moveTransistion: Effect.Transitions.sinoidal,
        scaleTransition: Effect.Transitions.sinoidal,
        opacityTransition: Effect.Transitions.none
    }, arguments[1] || {});
    var oldStyle = {
        top: element.style.top,
        left: element.style.left,
        height: element.style.height,
        width: element.style.width,
        opacity: Element.getInlineOpacity(element)
    };

    var dims = Element.getDimensions(element);
    var moveX, moveY;

    switch (options.direction) {
        case 'top-left':
            moveX = moveY = 0;
            break;
        case 'top-right':
            moveX = dims.width;
            moveY = 0;
            break;
        case 'bottom-left':
            moveX = 0;
            moveY = dims.height;
            break;
        case 'bottom-right':
            moveX = dims.width;
            moveY = dims.height;
            break;
        case 'center':
            moveX = dims.width / 2;
            moveY = dims.height / 2;
            break;
    }

    return new Effect.Parallel(
    [new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
      new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true }),
      new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
    ], Object.extend({
        beforeStartInternal: function(effect) {
            with (Element) {
                [makePositioned, makeClipping].call(effect.effects[0].element)
            } 
        },
        afterFinishInternal: function(effect) {
            with (Element) {
                [hide, undoClipping, undoPositioned].call(effect.effects[0].element);
                setStyle(effect.effects[0].element, oldStyle);
            } 
        }
    }, options)
  );
}

Effect.Pulsate = function(element) {
    element = $(element);
    var options = arguments[1] || {};
    var oldOpacity = Element.getInlineOpacity(element);
    var transition = options.transition || Effect.Transitions.sinoidal;
    var reverser = function(pos) { return transition(1 - Effect.Transitions.pulse(pos)) };
    reverser.bind(transition);
    return new Effect.Opacity(element,
    Object.extend(Object.extend({ duration: 3.0, from: 0,
        afterFinishInternal: function(effect) { Element.setStyle(effect.element, { opacity: oldOpacity }); }
    }, options), { transition: reverser }));
}

Effect.Fold = function(element) {
    element = $(element);
    var oldStyle = {
        top: element.style.top,
        left: element.style.left,
        width: element.style.width,
        height: element.style.height
    };
    Element.makeClipping(element);
    return new Effect.Scale(element, 5, Object.extend({
        scaleContent: false,
        scaleX: false,
        afterFinishInternal: function(effect) {
            new Effect.Scale(element, 1, {
                scaleContent: false,
                scaleY: false,
                afterFinishInternal: function(effect) {
                    with (Element) {
                        [hide, undoClipping].call(effect.element);
                        setStyle(effect.element, oldStyle);
                    } 
                } 
            });
        } 
    }, arguments[1] || {}));
}