// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// Contributors:
//  Justin Palmer (http://encytemedia.com/)
//  Mark Pilgrim (http://diveintomark.org/)
//  Martin Bialasinki
// 
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/ 

// 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.collectTextNodesIgnoreClass(node, className) : ''));
  }).flatten().join('');
};

Element.setContentZoom = function(element, percent) {
  element = $(element);  
  element.setStyle({fontSize: (percent/100) + 'em'});   
  if (Prototype.Browser.WebKit) window.scrollBy(0,0);
  return element;
};

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

Element.forceRerendering = function(element) {
  try {
    element = $(element);
    var n = document.createTextNode(' ');
    element.appendChild(n);
    element.removeChild(n);
  } catch(e) { }
};

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

var Effect = {
  _elementDoesNotExistError: {
    name: 'ElementDoesNotExistError',
    message: 'The specified DOM element does not exist, but is required for this effect to operate'
  },
  Transitions: {
    linear: Prototype.K,
    sinoidal: function(pos) {
      return (-Math.cos(pos*Math.PI)/2) + 0.5;
    },
    reverse: function(pos) {
      return 1-pos;
    },
    flicker: function(pos) {
      var pos = ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
      return pos > 1 ? 1 : pos;
    },
    wobble: function(pos) {
      return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
    },
    pulse: function(pos, pulses) { 
      pulses = pulses || 5; 
      return (
        ((pos % (1/pulses)) * pulses).round() == 0 ? 
              ((pos * pulses * 2) - (pos * pulses * 2).floor()) : 
          1 - ((pos * pulses * 2) - (pos * pulses * 2).floor())
        );
    },
    spring: function(pos) { 
      return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6)); 
    },
    none: function(pos) {
      return 0;
    },
    full: function(pos) {
      return 1;
    }
  },
  DefaultOptions: {
    duration:   1.0,   // seconds
    fps:        100,   // 100= assume 66fps max.
    sync:       false, // true for combining
    from:       0.0,
    to:         1.0,
    delay:      0.0,
    queue:      'parallel'
  },
  tagifyText: function(element) {
    var tagifyStyle = 'position:relative';
    if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';
    
    element = $(element);
    $A(element.childNodes).each( function(child) {
      if (child.nodeType==3) {
        child.nodeValue.toArray().each( function(character) {
          element.insertBefore(
            new Element('span', {style: tagifyStyle}).update(
              character == ' ' ? String.fromCharCode(160) : character), 
              child);
        });
        Element.remove(child);
      }
    });
  },
  multiple: function(element, effect) {
    var elements;
    if (((typeof element == 'object') || 
        Object.isFunction(element)) && 
       (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'), limit: 1 }
    }, arguments[2] || { });
    Effect[element.visible() ? 
      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
  }
};

Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;

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

Effect.ScopedQueue = Class.create(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 = Object.isString(effect.options.queue) ? 
      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 'with-last':
        timestamp = this.effects.pluck('startOn').max() || timestamp;
        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;

    if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
      this.effects.push(effect);
    
    if (!this.interval)
      this.interval = setInterval(this.loop.bind(this), 15);
  },
  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();
    for(var i=0, len=this.effects.length;i<len;i++) 
      this.effects[i] && this.effects[i].loop(timePos);
  }
});

Effect.Queues = {
  instances: $H(),
  get: function(queueName) {
    if (!Object.isString(queueName)) return queueName;
    
    return this.instances.get(queueName) ||
      this.instances.set(queueName, new Effect.ScopedQueue());
  }
};
Effect.Queue = Effect.Queues.get('global');

Effect.Base = Class.create({
  position: null,
  start: function(options) {
    function codeForEvent(options,eventName){
      return (
        (options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
        (options[eventName] ? 'this.options.'+eventName+'(this);' : '')
      );
    }
    if (options && options.transition === false) options.transition = Effect.Transitions.linear;
    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.fromToDelta  = this.options.to-this.options.from;
    this.totalTime    = this.finishOn-this.startOn;
    this.totalFrames  = this.options.fps*this.options.duration;
    
    eval('this.render = function(pos){ '+
      'if (this.state=="idle"){this.state="running";'+
      codeForEvent(this.options,'beforeSetup')+
      (this.setup ? 'this.setup();':'')+ 
      codeForEvent(this.options,'afterSetup')+
      '};if (this.state=="running"){'+
      'pos=this.options.transition(pos)*'+this.fromToDelta+'+'+this.options.from+';'+
      'this.position=pos;'+
      codeForEvent(this.options,'beforeUpdate')+
      (this.update ? 'this.update(pos);':'')+
      codeForEvent(this.options,'afterUpdate')+
      '}}');
    
    this.event('beforeStart');
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ? 
        '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.totalTime,
          frame = (pos * this.totalFrames).round();
      if (frame > this.currentFrame) {
        this.render(pos);
        this.currentFrame = frame;
      }
    }
  },
  cancel: function() {
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ? 
        '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() {
    var data = $H();
    for(property in this)
      if (!Object.isFunction(this[property])) data.set(property, this[property]);
    return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
  }
});

Effect.Parallel = Class.create(Effect.Base, {
  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.Tween = Class.create(Effect.Base, {
  initialize: function(object, from, to) {
    object = Object.isString(object) ? $(object) : object;
    var args = $A(arguments), method = args.last(), 
      options = args.length == 5 ? args[3] : null;
    this.method = Object.isFunction(method) ? method.bind(object) :
      Object.isFunction(object[method]) ? object[method].bind(object) : 
      function(value) { object[method] = value };
    this.start(Object.extend({ from: from, to: to }, options || { }));
  },
  update: function(position) {
    this.method(position);
  }
});

Effect.Event = Class.create(Effect.Base, {
  initialize: function() {
    this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
  },
  update: Prototype.emptyFunction
});

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

Effect.Move = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      x:    0,
      y:    0,
      mode: 'relative'
    }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    this.element.makePositioned();
    this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
    this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
    if (this.options.mode == 'absolute') {
      this.options.x = this.options.x - this.originalLeft;
      this.options.y = this.options.y - this.originalTop;
    }
  },
  update: function(position) {
    this.element.setStyle({
      left: (this.options.x  * position + this.originalLeft).round() + 'px',
      top:  (this.options.y  * position + this.originalTop).round()  + '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(Effect.Base, {
  initialize: function(element, percent) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    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 = this.element.getStyle('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 = this.element.getStyle('font-size') || '100%';
    ['em','px','%','pt'].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)
      this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
    this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
  },
  finish: function(position) {
    if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
  },
  setDimensions: function(height, width) {
    var d = { };
    if (this.options.scaleX) d.width = width.round() + 'px';
    if (this.options.scaleY) d.height = height.round() + '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';
      }
    }
    this.element.setStyle(d);
  }
});

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

Effect.ScrollTo = function(element) {
  var options = arguments[1] || { },
    scrollOffsets = document.viewport.getScrollOffsets(),
    elementOffsets = $(element).cumulativeOffset(),
    max = (window.height || document.body.scrollHeight) - document.viewport.getHeight();  

  if (options.offset) elementOffsets[1] += options.offset;

  return new Effect.Tween(null,
    scrollOffsets.top,
    elementOffsets[1] > max ? max : elementOffsets[1],
    options,
    function(p){ scrollTo(scrollOffsets.left, p.round()) }
  );
};

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

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

Effect.Appear = function(element) {
  element = $(element);
  var options = Object.extend({
  from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
  to:   1.0,
  // force Safari to render floated elements properly
  afterFinishInternal: function(effect) {
    effect.element.forceRerendering();
  },
  beforeSetup: function(effect) {
    effect.element.setOpacity(effect.options.from).show(); 
  }}, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Puff = function(element) {
  element = $(element);
  var oldStyle = { 
    opacity: element.getInlineOpacity(), 
    position: element.getStyle('position'),
    top:  element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height
  };
  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) {
        Position.absolutize(effect.effects[0].element)
      },
      afterFinishInternal: function(effect) {
         effect.effects[0].element.hide().setStyle(oldStyle); }
     }, arguments[1] || { })
   );
};

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

Effect.BlindDown = function(element) {
  element = $(element);
  var elementDimensions = element.getDimensions();
  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) {
      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
    },  
    afterFinishInternal: function(effect) {
      effect.element.undoClipping();
    }
  }, arguments[1] || { }));
};

Effect.SwitchOff = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  return new Effect.Appear(element, Object.extend({
    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) { 
          effect.element.makePositioned().makeClipping();
        },
        afterFinishInternal: function(effect) {
          effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
        }
      })
    }
  }, arguments[1] || { }));
};

Effect.DropOut = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left'),
    opacity: element.getInlineOpacity() };
  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) {
          effect.effects[0].element.makePositioned(); 
        },
        afterFinishInternal: function(effect) {
          effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
        } 
      }, arguments[1] || { }));
};

Effect.Shake = function(element) {
  element = $(element);
  var options = Object.extend({
    distance: 20,
    duration: 0.5
  }, arguments[1] || {});
  var distance = parseFloat(options.distance);
  var split = parseFloat(options.duration) / 10.0;
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left') };
    return new Effect.Move(element,
      { x:  distance, y: 0, duration: split, afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
        effect.element.undoPositioned().setStyle(oldStyle);
  }}) }}) }}) }}) }}) }});
};

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

Effect.SlideUp = function(element) {
  element = $(element).cleanWhitespace();
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, window.opera ? 0 : 1,
   Object.extend({ scaleContent: false, 
    scaleX: false, 
    scaleMode: 'box',
    scaleFrom: 100,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().show();
    },  
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' });
    },
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({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) {
      effect.element.makeClipping(); 
    },  
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping(); 
    }
  });
};

Effect.Grow = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: 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() };

  var dims = element.getDimensions();    
  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) {
      effect.element.hide().makeClipping().makePositioned();
    },
    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) {
               effect.effects[0].element.setStyle({height: '0px'}).show(); 
             },
             afterFinishInternal: function(effect) {
               effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle); 
             }
           }, options)
      )
    }
  });
};

Effect.Shrink = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: 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() };

  var dims = element.getDimensions();
  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) {
           effect.effects[0].element.makePositioned().makeClipping(); 
         },
         afterFinishInternal: function(effect) {
           effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
       }, options)
  );
};

Effect.Pulsate = function(element) {
  element = $(element);
  var options    = arguments[1] || { };
  var oldOpacity = element.getInlineOpacity();
  var transition = options.transition || Effect.Transitions.sinoidal;
  var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos, options.pulses)) };
  reverser.bind(transition);
  return new Effect.Opacity(element, 
    Object.extend(Object.extend({  duration: 2.0, from: 0,
      afterFinishInternal: function(effect) { effect.element.setStyle({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();
  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) {
        effect.element.hide().undoClipping().setStyle(oldStyle);
      } });
  }}, arguments[1] || { }));
};

Effect.Morph = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      style: { }
    }, arguments[1] || { });
    
    if (!Object.isString(options.style)) this.style = $H(options.style);
    else {
      if (options.style.include(':'))
        this.style = options.style.parseStyle();
      else {
        this.element.addClassName(options.style);
        this.style = $H(this.element.getStyles());
        this.element.removeClassName(options.style);
        var css = this.element.getStyles();
        this.style = this.style.reject(function(style) {
          return style.value == css[style.key];
        });
        options.afterFinishInternal = function(effect) {
          effect.element.addClassName(effect.options.style);
          effect.transforms.each(function(transform) {
            effect.element.style[transform.style] = '';
          });
        }
      }
    }
    this.start(options);
  },
  
  setup: function(){
    function parseColor(color){
      if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
      color = color.parseColor();
      return $R(0,2).map(function(i){
        return parseInt( color.slice(i*2+1,i*2+3), 16 ) 
      });
    }
    this.transforms = this.style.map(function(pair){
      var property = pair[0], value = pair[1], unit = null;

      if (value.parseColor('#zzzzzz') != '#zzzzzz') {
        value = value.parseColor();
        unit  = 'color';
      } else if (property == 'opacity') {
        value = parseFloat(value);
        if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
          this.element.setStyle({zoom: 1});
      } else if (Element.CSS_LENGTH.test(value)) {
          var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
          value = parseFloat(components[1]);
          unit = (components.length == 3) ? components[2] : null;
      }

      var originalValue = this.element.getStyle(property);
      return { 
        style: property.camelize(), 
        originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0), 
        targetValue: unit=='color' ? parseColor(value) : value,
        unit: unit
      };
    }.bind(this)).reject(function(transform){
      return (
        (transform.originalValue == transform.targetValue) ||
        (
          transform.unit != 'color' &&
          (isNaN(transform.originalValue) || isNaN(transform.targetValue))
        )
      )
    });
  },
  update: function(position) {
    var style = { }, transform, i = this.transforms.length;
    while(i--)
      style[(transform = this.transforms[i]).style] = 
        transform.unit=='color' ? '#'+
          (Math.round(transform.originalValue[0]+
            (transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
          (Math.round(transform.originalValue[1]+
            (transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
          (Math.round(transform.originalValue[2]+
            (transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
        (transform.originalValue +
          (transform.targetValue - transform.originalValue) * position).toFixed(3) + 
            (transform.unit === null ? '' : transform.unit);
    this.element.setStyle(style, true);
  }
});

Effect.Transform = Class.create({
  initialize: function(tracks){
    this.tracks  = [];
    this.options = arguments[1] || { };
    this.addTracks(tracks);
  },
  addTracks: function(tracks){
    tracks.each(function(track){
      track = $H(track);
      var data = track.values().first();
      this.tracks.push($H({
        ids:     track.keys().first(),
        effect:  Effect.Morph,
        options: { style: data }
      }));
    }.bind(this));
    return this;
  },
  play: function(){
    return new Effect.Parallel(
      this.tracks.map(function(track){
        var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
        var elements = [$(ids) || $$(ids)].flatten();
        return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, options)) });
      }).flatten(),
      this.options
    );
  }
});

Element.CSS_PROPERTIES = $w(
  'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' + 
  'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
  'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
  'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
  'fontSize fontWeight height left letterSpacing lineHeight ' +
  'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
  'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
  'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
  'right textIndent top width wordSpacing zIndex');
  
Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;

String.__parseStyleElement = document.createElement('div');
String.prototype.parseStyle = function(){
  var style, styleRules = $H();
  if (Prototype.Browser.WebKit)
    style = new Element('div',{style:this}).style;
  else {
    String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
    style = String.__parseStyleElement.childNodes[0].style;
  }
  
  Element.CSS_PROPERTIES.each(function(property){
    if (style[property]) styleRules.set(property, style[property]); 
  });
  
  if (Prototype.Browser.IE && this.include('opacity'))
    styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);

  return styleRules;
};

if (document.defaultView && document.defaultView.getComputedStyle) {
  Element.getStyles = function(element) {
    var css = document.defaultView.getComputedStyle($(element), null);
    return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
      styles[property] = css[property];
      return styles;
    });
  };
} else {
  Element.getStyles = function(element) {
    element = $(element);
    var css = element.currentStyle, styles;
    styles = Element.CSS_PROPERTIES.inject({ }, function(hash, property) {
      hash.set(property, css[property]);
      return hash;
    });
    if (!styles.opacity) styles.set('opacity', element.getOpacity());
    return styles;
  };
};

Effect.Methods = {
  morph: function(element, style) {
    element = $(element);
    new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
    return element;
  },
  visualEffect: function(element, effect, options) {
    element = $(element)
    var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
    new Effect[klass](element, options);
    return element;
  },
  highlight: function(element, options) {
    element = $(element);
    new Effect.Highlight(element, options);
    return element;
  }
};

$w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
  'pulsate shake puff squish switchOff dropOut').each(
  function(effect) { 
    Effect.Methods[effect] = function(element, options){
      element = $(element);
      Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
      return element;
    }
  }
);

$w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each( 
  function(f) { Effect.Methods[f] = Element[f]; }
);

Element.addMethods(Effect.Methods);




/*  Prototype-UI, version trunk
 *
 *  Prototype-UI is freely distributable under the terms of an MIT-style license.
 *  For details, see the PrototypeUI web site: http://www.prototype-ui.com/
 *
 *--------------------------------------------------------------------------*/

if(typeof Prototype == 'undefined' || !Prototype.Version.match("1.6"))
  throw("Prototype-UI library require Prototype library >= 1.6.0");

if (Prototype.Browser.WebKit) {
  Prototype.Browser.WebKitVersion = parseFloat(navigator.userAgent.match(/AppleWebKit\/([\d\.\+]*)/)[1]);
  Prototype.Browser.Safari2 = (Prototype.Browser.WebKitVersion < 420);
}

if (Prototype.Browser.IE) {
  Prototype.Browser.IEVersion = parseFloat(navigator.appVersion.split(';')[1].strip().split(' ')[1]);
  Prototype.Browser.IE6 =  Prototype.Browser.IEVersion == 6;
  Prototype.Browser.IE7 =  Prototype.Browser.IEVersion == 7;
}

Prototype.falseFunction = function() { return false };
Prototype.trueFunction  = function() { return true  };

var storyUI = {
  Abstract: { },
  Ajax: { }
};
Object.extend(Class.Methods, {
  extend: Object.extend.methodize(),

  addMethods: Class.Methods.addMethods.wrap(function(proceed, source) {
    // ensure we are not trying to add null or undefined
    if (!source) return this;

    // no callback, vanilla way
    if (!source.hasOwnProperty('methodsAdded'))
      return proceed(source);

    var callback = source.methodsAdded;
    delete source.methodsAdded;
    proceed(source);
    callback.call(source, this);
    source.methodsAdded = callback;

    return this;
  }),

  addMethod: function(name, lambda) {
    var methods = {};
    methods[name] = lambda;
    return this.addMethods(methods);
  },

  method: function(name) {
    return this.prototype[name].valueOf();
  },

  classMethod: function() {
    $A(arguments).flatten().each(function(method) {
      this[method] = (function() {
        return this[method].apply(this, arguments);
      }).bind(this.prototype);
    }, this);
    return this;
  },

  // prevent any call to this method
  undefMethod: function(name) {
    this.prototype[name] = undefined;
    return this;
  },

  // remove the class' own implementation of this method
  removeMethod: function(name) {
    delete this.prototype[name];
    return this;
  },

  aliasMethod: function(newName, name) {
    this.prototype[newName] = this.prototype[name];
    return this;
  },

  aliasMethodChain: function(target, feature) {
    feature = feature.camelcase();

    this.aliasMethod(target+"Without"+feature, target);
    this.aliasMethod(target, target+"With"+feature);

    return this;
  }
});
Object.extend(Number.prototype, {
  // Snap a number to a grid
  snap: function(round) {
    return parseInt(round == 1 ? this : (this / round).floor() * round);
  }
});
/*
Interface: String

*/

Object.extend(String.prototype, {
  camelcase: function() {
    var string = this.dasherize().camelize();
    return string.charAt(0).toUpperCase() + string.slice(1);
  },

  makeElement: function() {
    var wrapper = new Element('div'); wrapper.innerHTML = this;
    return wrapper.down();
  }
});
Object.extend(Array.prototype, {
  empty: function() {
    return !this.length;
  },

  extractOptions: function() {
    return this.last().constructor === Object ? this.pop() : { };
  },

  removeAt: function(index) {
    var object = this[index];
    this.splice(index, 1);
    return object;
  },

  remove: function(object) {
    var index;
    while ((index = this.indexOf(object)) != -1)
      this.removeAt(index);
    return object;
  },

  insert: function(index) {
    var args = $A(arguments);
    args.shift();
    this.splice.apply(this, [ index, 0 ].concat(args));
    return this;
  }
});
Element.addMethods({
  getScrollDimensions: function(element) {
    return {
      width:  element.scrollWidth,
      height: element.scrollHeight
    }
  },

  getScrollOffset: function(element) {
    return Element._returnOffset(element.scrollLeft, element.scrollTop);
  },

  setScrollOffset: function(element, offset) {
    element = $(element);
    if (arguments.length == 3)
      offset = { left: offset, top: arguments[2] };
    element.scrollLeft = offset.left;
    element.scrollTop  = offset.top;
    return element;
  },

  // returns "clean" numerical style (without "px") or null if style can not be resolved
  // or is not numeric
  getNumStyle: function(element, style) {
    var value = parseFloat($(element).getStyle(style));
    return isNaN(value) ? null : value;
  },

  // by Tobie Langel (http://tobielangel.com/2007/5/22/prototype-quick-tip)
  appendText: function(element, text) {
    element = $(element);
    text = String.interpret(text);
    element.appendChild(document.createTextNode(text));
    return element;
  }
});

document.whenReady = function(callback) {
  if (document.loaded)
    callback.call(document);
  else
    document.observe('dom:loaded', callback);
};

Object.extend(document.viewport, {
  // Alias this method for consistency
  getScrollOffset: document.viewport.getScrollOffsets,

  setScrollOffset: function(offset) {
    Element.setScrollOffset(Prototype.Browser.WebKit ? document.body : document.documentElement, offset);
  },

  getScrollDimensions: function() {
    return Element.getScrollDimensions(Prototype.Browser.WebKit ? document.body : document.documentElement);
  }
});

(function() {
  storyUI.Options = {
    methodsAdded: function(klass) {
      klass.classMethod($w(' setOptions allOptions optionsGetter optionsSetter optionsAccessor '));
    },

    setOptions: function(options) {
      if (!this.hasOwnProperty('options'))
        this.options = this.allOptions();

      this.options = Object.extend(this.options, options || {});
    },

    allOptions: function() {
      var superclass = this.constructor.superclass, ancestor = superclass && superclass.prototype;
      return (ancestor && ancestor.allOptions) ?
          Object.extend(ancestor.allOptions(), this.options) :
          Object.clone(this.options);
    },

    optionsGetter: function() {
      addOptionsAccessors(this, arguments, false);
    },

    optionsSetter: function() {
      addOptionsAccessors(this, arguments, true);
    },

    optionsAccessor: function() {
      this.optionsGetter.apply(this, arguments);
      this.optionsSetter.apply(this, arguments);
    }
  };

  // Internal
  function addOptionsAccessors(receiver, names, areSetters) {
    names = $A(names).flatten();

    if (names.empty())
      names = Object.keys(receiver.allOptions());

    names.each(function(name) {
      var accessorName = (areSetters ? 'set' : 'get') + name.camelcase();

      receiver[accessorName] = receiver[accessorName] || (areSetters ?
        // Setter
        function(value) { return this.options[name] = value } :
        // Getter
        function()      { return this.options[name]         });
    });
  }
})();

storyUI.Carousel = Class.create(storyUI.Options, {
  // Group: Options
  options: {
    direction               : "horizontal",
    previousButton          : ".previous_button",
    nextButton              : ".next_button",
    container               : ".container",
    scrollInc               : "auto",
    disabledButtonSuffix : '_disabled',
    overButtonSuffix : '_over'
  },

  initialize: function(element, options) {
    this.setOptions(options);
    this.element = $(element);
    this.id = this.element.id;
    this.container   = this.element.down(this.options.container).firstDescendant();
    this.elements    = this.container.childElements();
    this.previousButton = this.options.previousButton == false ? null : this.element.down(this.options.previousButton);
    this.nextButton = this.options.nextButton == false ? null : this.element.down(this.options.nextButton);

    this.posAttribute = (this.options.direction == "horizontal" ? "left" : "top");
    this.dimAttribute = (this.options.direction == "horizontal" ? "width" : "height");

    this.elementSize = this.computeElementSize();
    this.nbVisible = this.currentSize() / this.elementSize;

    var scrollInc = this.options.scrollInc;
    if (scrollInc == "auto")
      scrollInc = Math.floor(this.nbVisible);
    [ this.previousButton, this.nextButton ].each(function(button) {
      if (!button) return;
      var className = (button == this.nextButton ? "next_button" : "previous_button") + this.options.overButtonSuffix;
      button.clickHandler = this.scroll.bind(this, (button == this.nextButton ? -1 : 1) * scrollInc * this.elementSize);
      button.observe("click", button.clickHandler)
            .observe("mouseover", function() {button.addClassName(className)}.bind(this))
            .observe("mouseout",  function() {button.removeClassName(className)}.bind(this));
    }, this);
    this.updateButtons();
  },

  destroy: function($super) {
    [ this.previousButton, this.nextButton ].each(function(button) {
      if (!button) return;
        button.stopObserving("click", button.clickHandler);
    }, this);
	  this.element.remove();
	  this.fire('destroyed');
  },

  fire: function(eventName, memo) {
    memo = memo || { };
    memo.carousel = this;
    return this.element.fire('carousel:' + eventName, memo);
  },

  observe: function(eventName, handler) {
    this.element.observe('carousel:' + eventName, handler.bind(this));
    return this;
  },

  stopObserving: function(eventName, handler) {
	  this.element.stopObserving('carousel:' + eventName, handler);
	  return this;
  },

  checkScroll: function(position, updatePosition) {
    if (position > 0)
      position = 0;
    else {
      var limit = this.elements.last().positionedOffset()[this.posAttribute] + this.elementSize;
      var carouselSize = this.currentSize();

      if (position + limit < carouselSize)
        position += carouselSize - (position + limit);
      position = Math.min(position, 0);
    }
    if (updatePosition)
      this.container.style[this.posAttribute] = position + "px";

    return position;
  },

  scroll: function(deltaPixel) {
    if (this.animating)
      return this;

    // Compute new position
    var position =  this.currentPosition() + deltaPixel;

    // Check bounds
    position = this.checkScroll(position, false);

    // Compute shift to apply
    deltaPixel = position - this.currentPosition();
    if (deltaPixel != 0) {
      this.animating = true;
      this.fire("scroll:started");

      var that = this;
      // Move effects
      this.container.morph("opacity:0.5", {duration: 0.2, afterFinish: function() {
        that.container.morph(that.posAttribute + ": " + position + "px", {
          duration: 0.4,
          delay: 0.2,
          afterFinish: function() {
            that.container.morph("opacity:1", {
              duration: 0.2,
              afterFinish: function() {
                that.animating = false;
                that.updateButtons()
                  .fire("scroll:ended", { shift: deltaPixel / that.currentSize() });
              }
            });
          }
        });
      }});
    }
    return this;
  },

  scrollTo: function(index) {
    if (this.animating || index < 0 || index > this.elements.length || index == this.currentIndex() || isNaN(parseInt(index)))
      return this;
    return this.scroll((this.currentIndex() - index) * this.elementSize);
  },

  updateButtons: function() {
	  this.updatePreviousButton();
    this.updateNextButton();
    return this;
  },

  updatePreviousButton: function() {
    var position = this.currentPosition();
    var previousClassName = "previous_button" + this.options.disabledButtonSuffix;

    if (this.previousButton.hasClassName(previousClassName) && position != 0) {
      this.previousButton.removeClassName(previousClassName);
      this.fire('previousButton:enabled');
    }
    if (!this.previousButton.hasClassName(previousClassName) && position == 0) {
	    this.previousButton.addClassName(previousClassName);
      this.fire('previousButton:disabled');
    }
  },

  updateNextButton: function() {
    var lastPosition = this.currentLastPosition();
    var size = this.currentSize();
    var nextClassName = "next_button" + this.options.disabledButtonSuffix;

    if (this.nextButton.hasClassName(nextClassName) && lastPosition != size) {
      this.nextButton.removeClassName(nextClassName);
      this.fire('nextButton:enabled');
    }
    if (!this.nextButton.hasClassName(nextClassName) && lastPosition == size) {
	    this.nextButton.addClassName(nextClassName);
      this.fire('nextButton:disabled');
    }
  },

  computeElementSize: function() {
    return this.elements.first().getDimensions()[this.dimAttribute];
  },

  currentIndex: function() {
    return - this.currentPosition() / this.elementSize;
  },

  currentLastPosition: function() {
    if (this.container.childElements().empty())
      return 0;
    return this.currentPosition() +
           this.elements.last().positionedOffset()[this.posAttribute] +
           this.elementSize;
  },

  currentPosition: function() {
    return this.container.getNumStyle(this.posAttribute);
  },

  currentSize: function() {
    return this.container.parentNode.getDimensions()[this.dimAttribute];
  },

  updateSize: function() {
    this.nbVisible = this.currentSize() / this.elementSize;
    var scrollInc = this.options.scrollInc;
    if (scrollInc == "auto")
      scrollInc = Math.floor(this.nbVisible);

    [ this.previousButton, this.nextButton ].each(function(button) {
      if (!button) return;
      button.stopObserving("click", button.clickHandler);
      button.clickHandler = this.scroll.bind(this, (button == this.nextButton ? -1 : 1) * scrollInc * this.elementSize);
      button.observe("click", button.clickHandler);
    }, this);

    this.checkScroll(this.currentPosition(), true);
    this.updateButtons().fire('sizeUpdated');
    return this;
  }
});

storyUI.Ajax.Carousel = Class.create(storyUI.Carousel, {
  options: {
    elementSize : -1,
    url         : null
  },
  initialize: function($super, element, options) {
    if (!options.url)
      throw("url option is required for storyUI.Ajax.Carousel");
    if (!options.elementSize)
      throw("elementSize option is required for storyUI.Ajax.Carousel");

    $super(element, options);

    this.endIndex = 0;
    this.hasMore  = true;

    // Cache handlers
    this.updateHandler = this.update.bind(this);
    this.updateAndScrollHandler = function(nbElements, transport, json) {
	    this.update(transport, json);
	    this.scroll(nbElements);
	  }.bind(this);

    // Run first ajax request to fill the carousel
    this.runRequest.bind(this).defer({parameters: {from: 0, to: Math.ceil(this.nbVisible) - 1}, onSuccess: this.updateHandler});
  },
  runRequest: function(options) {
    this.requestRunning = true;
    new Ajax.Request(this.options.url, Object.extend({method: "GET"}, options));
    this.fire("request:started");
    return this;
  },
  scroll: function($super, deltaPixel) {
    if (this.animating || this.requestRunning)
      return this;

    var nbElements = (-deltaPixel) / this.elementSize;
    // Check if there is not enough
    if (this.hasMore && nbElements > 0 && this.currentIndex() + this.nbVisible + nbElements - 1 > this.endIndex) {
      var from = this.endIndex + 1;
      var to   = Math.ceil(from + this.nbVisible - 1);
      this.runRequest({parameters: {from: from, to: to}, onSuccess: this.updateAndScrollHandler.curry(deltaPixel).bind(this)});
      return this;
    }
    else
      $super(deltaPixel);
  },
  update: function(transport, json) {
    this.requestRunning = false;
    this.fire("request:ended");
    if (!json)
      json = transport.responseJSON;
    this.hasMore = json.more;

    this.endIndex = Math.max(this.endIndex, json.to);
    this.elements = this.container.insert({bottom: json.html}).childElements();
    return this.updateButtons();
  },
  computeElementSize: function() {
    return this.options.elementSize;
  },
  updateSize: function($super) {
    var nbVisible = this.nbVisible;
    $super();
    // If we have enough space for at least a new element
    if (Math.floor(this.nbVisible) - Math.floor(nbVisible) >= 1 && this.hasMore) {
      if (this.currentIndex() + Math.floor(this.nbVisible) >= this.endIndex) {
        var nbNew = Math.floor(this.currentIndex() + Math.floor(this.nbVisible) - this.endIndex);
        this.runRequest({parameters: {from: this.endIndex + 1, to: this.endIndex + nbNew}, onSuccess: this.updateHandler});
      }
    }
    return this;
  },

  updateNextButton: function($super) {
    var lastPosition = this.currentLastPosition();
    var size = this.currentSize();
    var nextClassName = "next_button" + this.options.disabledButtonSuffix;

    if (this.nextButton.hasClassName(nextClassName) && lastPosition != size) {
      this.nextButton.removeClassName(nextClassName);
      this.fire('nextButton:enabled');
    }
    if (!this.nextButton.hasClassName(nextClassName) && lastPosition == size && !this.hasMore) {
	    this.nextButton.addClassName(nextClassName);
      this.fire('nextButton:disabled');
	  
    }
  }
});

/* Daum story */
document.domain = 'daum.net';

var storySlide = Class.create({
	id: '',
	htmlTemplate:'',
	slideLength: 0,
	position: 0,
	data: [],
	preBtn: 'preBtn',
	nextBtn: 'nextBtn',
	initialize:function(data, options){
		Object.extend(this, options);
		this.slideLength = $$('#'+this.id+' li').length;
		this.dataLength = data.length;
		this.htmlTemplate = new Template(this.htmlTemplate);
		if(this.dataLength > this.slideLength){ 
			this.data = data.concat(data);
			$(this.preBtn).observe("click", this.slidePrev.bindAsEventListener(this));
			$(this.nextBtn).observe("click", this.slideNext.bindAsEventListener(this));
		} else {
			this.data = data;
			$(this.preBtn).observe("click", function(event){ event.stop(); });
			$(this.nextBtn).observe("click", function(event){ event.stop(); });
		}
		this.slidePrint(this.position);
	},
	slidePrint:function(dataNum){
		for(var i=0 ; i<this.slideLength ; i++){
			if(this.data[dataNum]) $$('#'+this.id+' li')[i].update(this.htmlTemplate.evaluate(this.data[dataNum]));
			dataNum++;
		}
	},
	slidePrev:function(event){
		this.position = this.position-this.slideLength;
		if(this.position < 0 ) this.position = this.dataLength + this.position;
		this.slidePrint(this.position);
		event.stop();
	},
	slideNext:function(event){
		this.position = this.position+this.slideLength;
		if(this.position > this.dataLength) this.position = this.position - this.dataLength;
		this.slidePrint(this.position);
		event.stop();
	}
});

function getCookie(name){
	name += "=";
	cookie = document.cookie + ";";
	start = cookie.indexOf(name);
	if (start != -1)
	{
		end = cookie.indexOf(";",start);
		return unescape(cookie.substring(start + name.length, end));
	}
	return "";
}

function setCookie(name, value, expires, path, domain, secure){
	if(expires){//day로 설정
		var d=new Date(); d.setDate(d.getDate()+expires);
		expires = d.toGMTString();
	}
	document.cookie = name + "=" + escape(value) +
	  ((expires) ? "; expires=" + expires : "") +
	  ((path) ? "; path=" + path : "") +
	  ((domain) ? "; domain=" + domain : "") +
	  ((secure) ? "; secure" : "");
}

var todayReview = {
	actTmp:'',
	view: function(no){
		this.actTmp = no;
		var tmpNo = no + 1;
		$$('#todayReviewTab a')[this.actTmp].addClassName('on');
		$('todayReviewMore').href = $$('#todayReviewTab a')[this.actTmp].href;
		$('reviewCts'+tmpNo).setStyle({'display':'block'});
		$$('#todayReviewTab a').each(function(el, i){
			el.observe('mouseover', function(){
				todayReview.overTab(i);
			});
		});
	},
	overTab: function(i){
		var tmpNo = this.actTmp + 1;
		$$('#todayReviewTab a')[this.actTmp].removeClassName('on');
		$('reviewCts'+tmpNo).setStyle({'display':'none'});
		var tmpNo = i + 1;
		$$('#todayReviewTab a')[i].addClassName('on');
		$('reviewCts'+tmpNo).setStyle({'display':'block'});
		$('todayReviewMore').href = $$('#todayReviewTab a')[i].href;
		this.actTmp = i;
	}
}

var writerInfo = {
	actTmp:'',
	view: function(no){
		this.actTmp = no;
		var tmpNo = no + 1;
		$$('#infoTab a')[this.actTmp].addClassName('on'+tmpNo);
		$('infoCts'+tmpNo).setStyle({'display':'block'});
		$$('#infoTab a').each(function(el, i){
			el.observe('mouseover', function(){
				writerInfo.overTab(i);
			});
		});
	},
	overTab: function(i){
		var tmpNo = this.actTmp + 1;
		$$('#infoTab a')[this.actTmp].removeClassName('on'+tmpNo);
		$('infoCts'+tmpNo).setStyle({'display':'none'});
		var tmpNo = i + 1;
		$$('#infoTab a')[i].addClassName('on'+tmpNo);
		$('infoCts'+tmpNo).setStyle({'display':'block'});
		this.actTmp = i;
	}
}

var fontControler = {
	fontFamily:'gulim gulimon',
	fontSize:13,
	mOver: function(evt){
		var el = evt.element();
		el.addClassName(el.className+'on');
	},
	mOut: function(evt){
		var el = evt.element();
		var classNameTmp = el.className.split(' ');
		el.removeClassName(classNameTmp[0]+'on');
	},
	mSizeOver: function(evt){
		var el = evt.element();
		if(this.fontFamily != el.className) el.addClassName(el.className+'on');
	},
	mSizeOut: function(evt){
		var el = evt.element();
		var classNameTmp = el.className.split(' ');
		if(this.fontFamily != el.className) el.removeClassName(classNameTmp[0]+'on');
	},
	fontInit:function(){
		$$('#fontSizeControl a')[1].className = 'gulim';
		$$('#fontSizeControl a')[2].className = 'dotum';
		$$('#fontSizeControl a')[3].className = 'batang';
		$$('#fontSizeControl a')[4].className = 'malgun';
		$('fontSizeControl').setStyle({'display':'none'});
	},
	mClick: function(evt){
		var el = evt.element();
		var classNameTmp = el.className.split(' ');
		switch(classNameTmp[0]){
			case 'm':
				if(this.fontSize > 12) {
					this.fontSize-=1;
					try {
						$('stMainView').setStyle({'fontSize':this.fontSize + 'px'});
						$$('#stMainView p', '#stMainView span', '#stMainView td').each(function(el, i){
							el.setStyle({'fontSize': parseInt(el.getStyle('fontSize')) - 1 + 'px'})
						})
					} catch(e){}
					setCookie('ui_fontsize', this.fontSize, 7, '/');
				} else {
					alert('가장 작은 글꼴 입니다.');
				}
			break;
			case 'p':
				if(this.fontSize < 20) {
					this.fontSize+=1;
					try{
						$('stMainView').setStyle({'fontSize':this.fontSize + 'px'});
						$$('#stMainView p', '#stMainView span', '#stMainView td').each(function(el, i){
							el.setStyle({'fontSize': parseInt(el.getStyle('fontSize')) + 1 + 'px'})
						})
					} catch(e){}
					setCookie('ui_fontsize', this.fontSize, 7, '/');
				} else {
					alert('가장 큰 글꼴 입니다.');
				}
			break;
			case 'btn':
				if($('fontSizeControl').getStyle('display') == 'none') $('fontSizeControl').setStyle({'display':'block', 'zIndex':100});
				else $('fontSizeControl').setStyle({'display':'none'});
			break;
			case 'gulim':
				$('stMainView').setStyle({'fontFamily': '굴림, gulim'});
				$$('#stMainView p', '#stMainView span', '#stMainView td').each(function(el, i){
					el.setStyle({'fontFamily': '굴림, gulim'})
				})
				this.fontInit();
				el.addClassName('gulimon');
				this.fontFamily = 'gulim gulimon';
				setCookie('ui_fontfamily', this.fontFamily, 7, '/');
			break;
			case 'dotum':
				$('stMainView').setStyle({'fontFamily': '돋움, dotum'});
				$$('#stMainView p', '#stMainView span', '#stMainView td').each(function(el, i){
					el.setStyle({'fontFamily': '돋움, dotum'})
				})
				this.fontInit();
				el.addClassName('dotumon');
				this.fontFamily = 'dotum dotumon';
				setCookie('ui_fontfamily', this.fontFamily, 7, '/');
			break;
			case 'batang':
				$('stMainView').setStyle({'fontFamily': '바탕, batang'});
				$$('#stMainView p', '#stMainView span', '#stMainView td').each(function(el, i){
					el.setStyle({'fontFamily': '바탕, batang'})
				})
				this.fontInit();
				el.addClassName('batangon');
				this.fontFamily = 'batang batangon';
				setCookie('ui_fontfamily', this.fontFamily, 7, '/');
			break;
			case 'malgun':
				$('stMainView').setStyle({'fontFamily': '"맑은 고딕","Malgun Gothic"'});
				$$('#stMainView p', '#stMainView span', '#stMainView td').each(function(el, i){
					el.setStyle({'fontFamily': '"맑은 고딕","Malgun Gothic"'})
				})
				this.fontInit();
				el.addClassName('malgunon');
				this.fontFamily = 'malgun malgunon';
				setCookie('ui_fontfamily', this.fontFamily, 7, '/');
			break;
			default:
			break;
		}
	},

	init: function(){
		try {
			var fontSizeTmp = parseInt(getCookie('ui_fontsize'));
			var fontFamilyTmp = getCookie('ui_fontfamily');
			if(fontSizeTmp){
				this.fontSize = fontSizeTmp;
				var fontSizeTmp2 = fontSizeTmp - 13;
				$('stMainView').setStyle({'fontSize':this.fontSize + 'px'});
				$$('#stMainView p', '#stMainView span', '#stMainView td').each(function(el, i){
					el.setStyle({'fontSize': parseInt(el.getStyle('fontSize')) + fontSizeTmp2 + 'px'})
				})
			}
			if(fontFamilyTmp){
				this.fontFamily = fontFamilyTmp;
				$$('#fontSizeControl a')[1].removeClassName('gulimon');
				switch(this.fontFamily){
					case 'gulim gulimon':
						$('stMainView').setStyle({'fontFamily': '굴림, gulim'});
						$$('#stMainView p', '#stMainView span', '#stMainView td').each(function(el, i){
							el.setStyle({'fontFamily': '굴림, gulim'})
						})
						$$('#fontSizeControl a')[1].addClassName('gulimon');
					break;
					case 'dotum dotumon':
						$('stMainView').setStyle({'fontFamily': '돋움, dotum'});
						$$('#stMainView p', '#stMainView span', '#stMainView td').each(function(el, i){
							el.setStyle({'fontFamily': '돋움, dotum'})
						})
						$$('#fontSizeControl a')[2].addClassName('dotumon');
					break;
					case 'batang batangon':
						$('stMainView').setStyle({'fontFamily': '바탕, batang'});
						$$('#stMainView p', '#stMainView span', '#stMainView td').each(function(el, i){
							el.setStyle({'fontFamily': '바탕, batang'})
						})
						$$('#fontSizeControl a')[3].addClassName('batangon');
					break;
					case 'malgun malgunon':
						$('stMainView').setStyle({'fontFamily': '"맑은 고딕","Malgun Gothic"'});
						$$('#stMainView p', '#stMainView span', '#stMainView td').each(function(el, i){
							el.setStyle({'fontFamily': '"맑은 고딕","Malgun Gothic"'})
						})
						$$('#fontSizeControl a')[4].addClassName('malgunon');
					break;
					default:
					break;
				}
			}
		} catch(e){}

		$$('#fontControl a')[1].observe('mouseover', this.mOver.bind(this));
		$$('#fontControl a')[2].observe('mouseover', this.mOver.bind(this));
		$$('#fontControl a')[1].observe('mouseout', this.mOut.bind(this));
		$$('#fontControl a')[2].observe('mouseout', this.mOut.bind(this));

		$$('#fontSizeControl a').each(function(el,i){
			$$('#fontSizeControl a')[i].observe('mouseover', fontControler.mSizeOver.bind(fontControler));
			$$('#fontSizeControl a')[i].observe('mouseout', fontControler.mSizeOut.bind(fontControler));
		});

		$('fontControl').observe('click', this.mClick.bind(this));
		Event.observe(window, 'scroll', remoteMove);
		Event.observe(document, 'selectstart', function(evt){ evt.stop(); });
		Event.observe(document, 'contextmenu', function(evt){ evt.stop(); });
	}
}

var vlcts = {
	actNo:'',
	init: function(actNo){
		this.actNo = actNo;
		try { $$('#pageList .vlcts')[actNo].addClassName('act'); } catch(e){}
		$$('#pageList .vlcts').each(function(el, i){
			el.observe('mouseover', function(){
				el.addClassName('on');
			});
		});
		$$('#pageList .vlcts').each(function(el, i){
			el.observe('mouseout', function(){
				el.removeClassName('on');
			});
		});
	}
}

function bgResize(){
	var myWidth = document.body.clientWidth;
	if(myWidth > 978) $('stRightBg').style.width = ((myWidth-978) / 2) + 'px';
	else $('stRightBg').style.width = 0;
}

function goFirst(){
	storyListView.scrollTo(0);
}

function goLast(){
	storyListView.scrollTo($$('#pageList li').length-1);
}

function daum_paging_rollover(obj, img, type) {
	var imgurl = "http://img-section.hanmail.net/story/common/";
	var tmp
	if (type == "on") {
		obj.src = imgurl + img + "_over.gif";
	} else {
		obj.src = imgurl + img + ".gif";
	}
}

function remoteMove(){
	var docHeight = $('stMainView').getHeight() + 60;
	var scrollTop = document.body.scrollTop || document.documentElement.scrollTop;
	if(scrollTop >132 && scrollTop < docHeight) $('remoteController').setStyle({ 'top' : scrollTop + 98 +'px' });
}

function viewMoveTop(){
	$('remoteController').setStyle({ 'top' : '230px' });
	$('storyMainList').scrollTo();
}

function viewMoveBottom(){
	$('remoteController').setStyle({ 'top' : $('stMainView').getHeight() + 132 + 'px' });
	$('pageList').scrollTo();
}

function clickJs(){
	var ref = document.referrer;
	var loc = document.location;
	var rootUrl = "http://click.media.daum.net";
	document.write("<iframe name='click' src=" + "'" +  rootUrl + "/pv/click.php?service=story&" );
	document.write("ref=" + encodeURIComponent(ref) + "&loc=" + encodeURIComponent(loc) + "'" );
	document.write("width='0' height='0' frameborder='0' marginwidth='0' marginheight='0'><\/iframe>" );
}
//book 나도 만화가 함수
function sortCateTo(name){
	var ids = ["bestCate_all","bestCate_novel","bestCate_poem","bestCate_essay"];
	for(var i = 0,len = ids.length; i<len; i++){
		$(ids[i]).setStyle({display:'none'});
		$("tab_"+ids[i]).removeClassName("on")
	}
	$("bestCate_"+name).setStyle({display:'block'});
	$("tab_bestCate_"+name).addClassName("on")
}