/* From: /eprints/eprints/software/eprints-materiali-didattici/lib/static/javascript/auto/20_prototype.js */

/*  Prototype JavaScript framework, version 1.4.0_rc3
 *  (c) 2005 Sam Stephenson <sam@conio.net>
 *
 *  THIS FILE IS AUTOMATICALLY GENERATED. When sending patches, please diff
 *  against the source tree, available from the Prototype darcs repository.
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *
 *  For details, see the Prototype web site: http://prototype.conio.net/
 *
/*--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.4.0_rc3',
  ScriptFragment: '(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)',

  emptyFunction: function() {},
  K: function(x) {return x}
}

var Class = {
  create: function() {
    return function() {
      this.initialize.apply(this, arguments);
    }
  }
}

var Abstract = new Object();

Object.extend = function(destination, source) {
  for (property in source) {
    destination[property] = source[property];
  }
  return destination;
}

Object.inspect = function(object) {
  try {
    if (object == undefined) return 'undefined';
    if (object == null) return 'null';
    return object.inspect ? object.inspect() : object.toString();
  } catch (e) {
    if (e instanceof RangeError) return '...';
    throw e;
  }
}

Function.prototype.bind = function(object) {
  var __method = this;
  return function() {
    return __method.apply(object, arguments);
  }
}

Function.prototype.bindAsEventListener = function(object) {
  var __method = this;
  return function(event) {
    return __method.call(object, event || window.event);
  }
}

Object.extend(Number.prototype, {
  toColorPart: function() {
    var digits = this.toString(16);
    if (this < 16) return '0' + digits;
    return digits;
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  }
});

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0; i < arguments.length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) {}
    }

    return returnValue;
  }
}

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

var PeriodicalExecuter = Class.create();
PeriodicalExecuter.prototype = {
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.callback();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
}

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

function $() {
  var elements = new Array();

  for (var i = 0; i < arguments.length; i++) {
    var element = arguments[i];
    if (typeof element == 'string')
      element = document.getElementById(element);

    if (arguments.length == 1)
      return element;

    elements.push(element);
  }

  return elements;
}
Object.extend(String.prototype, {
  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(eval);
  },

  escapeHTML: function() {
    var div = document.createElement('div');
    var text = document.createTextNode(this);
    div.appendChild(text);
    return div.innerHTML;
  },

  unescapeHTML: function() {
    var div = document.createElement('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? div.childNodes[0].nodeValue : '';
  },

  toQueryParams: function() {
    var pairs = this.match(/^\??(.*)$/)[1].split('&');
    return pairs.inject({}, function(params, pairString) {
      var pair = pairString.split('=');
      params[pair[0]] = pair[1];
      return params;
    });
  },

  toArray: function() {
    return this.split('');
  },

  camelize: function() {
    var oStringList = this.split('-');
    if (oStringList.length == 1) return oStringList[0];

    var camelizedString = this.indexOf('-') == 0
      ? oStringList[0].charAt(0).toUpperCase() + oStringList[0].substring(1)
      : oStringList[0];

    for (var i = 1, len = oStringList.length; i < len; i++) {
      var s = oStringList[i];
      camelizedString += s.charAt(0).toUpperCase() + s.substring(1);
    }

    return camelizedString;
  },

  inspect: function() {
    return "'" + this.replace('\\', '\\\\').replace("'", '\\\'') + "'";
  }
});

String.prototype.parseQuery = String.prototype.toQueryParams;

var $break    = new Object();
var $continue = new Object();

var Enumerable = {
  each: function(iterator) {
    var index = 0;
    try {
      this._each(function(value) {
        try {
          iterator(value, index++);
        } catch (e) {
          if (e != $continue) throw e;
        }
      });
    } catch (e) {
      if (e != $break) throw e;
    }
  },

  all: function(iterator) {
    var result = true;
    this.each(function(value, index) {
      result = result && !!(iterator || Prototype.K)(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator) {
    var result = true;
    this.each(function(value, index) {
      if (result = !!(iterator || Prototype.K)(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator) {
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function (iterator) {
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator) {
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(pattern, iterator) {
    var results = [];
    this.each(function(value, index) {
      var stringValue = value.toString();
      if (stringValue.match(pattern))
        results.push((iterator || Prototype.K)(value, index));
    })
    return results;
  },

  include: function(object) {
    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inject: function(memo, iterator) {
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.collect(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator) {
    var result;
    this.each(function(value, index) {
      value = (iterator || Prototype.K)(value, index);
      if (value >= (result || value))
        result = value;
    });
    return result;
  },

  min: function(iterator) {
    var result;
    this.each(function(value, index) {
      value = (iterator || Prototype.K)(value, index);
      if (value <= (result || value))
        result = value;
    });
    return result;
  },

  partition: function(iterator) {
    var trues = [], falses = [];
    this.each(function(value, index) {
      ((iterator || Prototype.K)(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value, index) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator) {
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator) {
    return this.collect(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.collect(Prototype.K);
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (typeof args.last() == 'function')
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      iterator(value = collections.pluck(index));
      return value;
    });
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
}

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray
});
var $A = Array.from = function(iterable) {
  if (iterable.toArray) {
    return iterable.toArray();
  } else {
    var results = [];
    for (var i = 0; i < iterable.length; i++)
      results.push(iterable[i]);
    return results;
  }
}

Object.extend(Array.prototype, Enumerable);

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0; i < this.length; i++)
      iterator(this[i]);
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != undefined || value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(value.constructor == Array ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  indexOf: function(object) {
    for (var i = 0; i < this.length; i++)
      if (this[i] == object) return i;
    return -1;
  },

  reverse: function() {
    var result = [];
    for (var i = this.length; i > 0; i--)
      result.push(this[i-1]);
    return result;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  }
});
var Hash = {
  _each: function(iterator) {
    for (key in this) {
      var value = this[key];
      if (typeof value == 'function') continue;

      var pair = [key, value];
      pair.key = key;
      pair.value = value;
      iterator(pair);
    }
  },

  keys: function() {
    return this.pluck('key');
  },

  values: function() {
    return this.pluck('value');
  },

  merge: function(hash) {
    return $H(hash).inject($H(this), function(mergedHash, pair) {
      mergedHash[pair.key] = pair.value;
      return mergedHash;
    });
  },

  toQueryString: function() {
    return this.map(function(pair) {
      return pair.map(encodeURIComponent).join('=');
    }).join('&');
  },

  inspect: function() {
    return '#<Hash:{' + this.map(function(pair) {
      return pair.map(Object.inspect).join(': ');
    }).join(', ') + '}>';
  }
}

function $H(object) {
  var hash = Object.extend({}, object || {});
  Object.extend(hash, Enumerable);
  Object.extend(hash, Hash);
  return hash;
}
ObjectRange = Class.create();
Object.extend(ObjectRange.prototype, Enumerable);
Object.extend(ObjectRange.prototype, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    do {
      iterator(value);
      value = value.succ();
    } while (this.include(value));
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
}

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')},
      function() {return new XMLHttpRequest()}
    ) || false;
  },

  activeRequestCount: 0
}

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responderToAdd) {
    if (!this.include(responderToAdd))
      this.responders.push(responderToAdd);
  },

  unregister: function(responderToRemove) {
    this.responders = this.responders.without(responderToRemove);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (responder[callback] && typeof responder[callback] == 'function') {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) {}
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate: function() {
    Ajax.activeRequestCount++;
  },

  onComplete: function() {
    Ajax.activeRequestCount--;
  }
});

Ajax.Base = function() {};
Ajax.Base.prototype = {
  setOptions: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      parameters:   ''
    }
    Object.extend(this.options, options || {});
  },

  responseIsSuccess: function() {
    return this.transport.status == undefined
        || this.transport.status == 0
        || (this.transport.status >= 200 && this.transport.status < 300);
  },

  responseIsFailure: function() {
    return !this.responseIsSuccess();
  }
}

Ajax.Request = Class.create();
Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
  initialize: function(url, options) {
    this.transport = Ajax.getTransport();
    this.setOptions(options);
    this.request(url);
  },

  request: function(url) {
    var parameters = this.options.parameters || '';
    if (parameters.length > 0) parameters += '&_=';

    try {
      this.url = url;
      if (this.options.method == 'get' && parameters.length > 0)
        this.url += (this.url.match(/\?/) ? '&' : '?') + parameters;

      Ajax.Responders.dispatch('onCreate', this, this.transport);

      this.transport.open(this.options.method, this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) {
        this.transport.onreadystatechange = this.onStateChange.bind(this);
        setTimeout((function() {this.respondToReadyState(1)}).bind(this), 10);
      }

      this.setRequestHeaders();

      var body = this.options.postBody ? this.options.postBody : parameters;
      this.transport.send(this.options.method == 'post' ? body : null);

    } catch (e) {
      this.dispatchException(e);
    }
  },

  setRequestHeaders: function() {
    var requestHeaders =
      ['X-Requested-With', 'XMLHttpRequest',
       'X-Prototype-Version', Prototype.Version];

    if (this.options.method == 'post') {
      requestHeaders.push('Content-type',
        'application/x-www-form-urlencoded');

      /* Force "Connection: close" for Mozilla browsers to work around
       * a bug where XMLHttpReqeuest sends an incorrect Content-length
       * header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType)
        requestHeaders.push('Connection', 'close');
    }

    if (this.options.requestHeaders)
      requestHeaders.push.apply(requestHeaders, this.options.requestHeaders);

    for (var i = 0; i < requestHeaders.length; i += 2)
      this.transport.setRequestHeader(requestHeaders[i], requestHeaders[i+1]);
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState != 1)
      this.respondToReadyState(this.transport.readyState);
  },

  header: function(name) {
    try {
      return this.transport.getResponseHeader(name);
    } catch (e) {}
  },

  evalJSON: function() {
    try {
      return eval(this.header('X-JSON'));
    } catch (e) {}
  },

  evalResponse: function() {
    try {
      return eval(this.transport.responseText);
    } catch (e) {
      this.dispatchException(e);
    }
  },

  respondToReadyState: function(readyState) {
    var event = Ajax.Request.Events[readyState];
    var transport = this.transport, json = this.evalJSON();

    if (event == 'Complete') {
      try {
        (this.options['on' + this.transport.status]
         || this.options['on' + (this.responseIsSuccess() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(transport, json);
      } catch (e) {
        this.dispatchException(e);
      }

      if (this.header('Content-type') == 'text/javascript')
        this.evalResponse();
    }

    try {
      (this.options['on' + event] || Prototype.emptyFunction)(transport, json);
      Ajax.Responders.dispatch('on' + event, this, transport, json);
    } catch (e) {
      this.dispatchException(e);
    }

    /* Avoid memory leak in MSIE: clean up the oncomplete event handler */
    if (event == 'Complete')
      this.transport.onreadystatechange = Prototype.emptyFunction;
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Updater = Class.create();

Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {
  initialize: function(container, url, options) {
    this.containers = {
      success: container.success ? $(container.success) : $(container),
      failure: container.failure ? $(container.failure) :
        (container.success ? null : $(container))
    }

    this.transport = Ajax.getTransport();
    this.setOptions(options);

    var onComplete = this.options.onComplete || Prototype.emptyFunction;
    this.options.onComplete = (function(transport, object) {
      this.updateContent();
      onComplete(transport, object);
    }).bind(this);

    this.request(url);
  },

  updateContent: function() {
    var receiver = this.responseIsSuccess() ?
      this.containers.success : this.containers.failure;
    var response = this.transport.responseText;

    if (!this.options.evalScripts)
      response = response.stripScripts();

    if (receiver) {
      if (this.options.insertion) {
        new this.options.insertion(receiver, response);
      } else {
        Element.update(receiver, response);
      }
    }

    if (this.responseIsSuccess()) {
      if (this.onComplete)
        setTimeout(this.onComplete.bind(this), 10);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create();
Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
  initialize: function(container, url, options) {
    this.setOptions(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = {};
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(request) {
    if (this.options.decay) {
      this.decay = (request.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = request.responseText;
    }
    this.timer = setTimeout(this.onTimerEvent.bind(this),
      this.decay * this.frequency * 1000);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
document.getElementsByClassName = function(className, parentElement) {
  var children = ($(parentElement) || document.body).getElementsByTagName('*');
  return $A(children).inject([], function(elements, child) {
    if (child.className.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))
      elements.push(child);
    return elements;
  });
}

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

if (!window.Element) {
  var Element = new Object();
}

Object.extend(Element, {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function() {
    for (var i = 0; i < arguments.length; i++) {
      var element = $(arguments[i]);
      Element[Element.visible(element) ? 'hide' : 'show'](element);
    }
  },

  hide: function() {
    for (var i = 0; i < arguments.length; i++) {
      var element = $(arguments[i]);
      element.style.display = 'none';
    }
  },

  show: function() {
    for (var i = 0; i < arguments.length; i++) {
      var element = $(arguments[i]);
      element.style.display = '';
    }
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
  },

  update: function(element, html) {
    $(element).innerHTML = html.stripScripts();
    setTimeout(function() {html.evalScripts()}, 10);
  },

  getHeight: function(element) {
    element = $(element);
    return element.offsetHeight;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    return Element.classNames(element).include(className);
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    return Element.classNames(element).add(className);
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    return Element.classNames(element).remove(className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    for (var i = 0; i < element.childNodes.length; i++) {
      var node = element.childNodes[i];
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        Element.remove(node);
    }
  },

  empty: function(element) {
    return $(element).innerHTML.match(/^\s*$/);
  },

  scrollTo: function(element) {
    element = $(element);
    var x = element.x ? element.x : element.offsetLeft,
        y = element.y ? element.y : element.offsetTop;
    window.scrollTo(x, y);
  },

  getStyle: function(element, style) {
    element = $(element);
    var value = element.style[style.camelize()];
    if (!value) {
      if (document.defaultView && document.defaultView.getComputedStyle) {
        var css = document.defaultView.getComputedStyle(element, null);
        value = css ? css.getPropertyValue(style) : null;
      } else if (element.currentStyle) {
        value = element.currentStyle[style.camelize()];
      }
    }

    if (window.opera && ['left', 'top', 'right', 'bottom'].include(style))
      if (Element.getStyle(element, 'position') == 'static') value = 'auto';

    return value == 'auto' ? null : value;
  },

  getDimensions: function(element) {
    element = $(element);
    if (Element.getStyle(element, 'display') != 'none')
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = '';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = 'none';
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return;
    element._overflow = element.style.overflow;
    if ((Element.getStyle(element, 'overflow') || 'visible') != 'hidden')
      element.style.overflow = 'hidden';
  },

  undoClipping: function(element) {
    element = $(element);
    if (element._overflow) return;
    element.style.overflow = element._overflow;
    element._overflow = undefined;
  }
});

var Toggle = new Object();
Toggle.display = Element.toggle;

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

Abstract.Insertion = function(adjacency) {
  this.adjacency = adjacency;
}

Abstract.Insertion.prototype = {
  initialize: function(element, content) {
    this.element = $(element);
    this.content = content.stripScripts();

    if (this.adjacency && this.element.insertAdjacentHTML) {
      try {
        this.element.insertAdjacentHTML(this.adjacency, this.content);
      } catch (e) {
        if (this.element.tagName.toLowerCase() == 'tbody') {
          this.insertContent(this.contentFromAnonymousTable());
        } else {
          throw e;
        }
      }
    } else {
      this.range = this.element.ownerDocument.createRange();
      if (this.initializeRange) this.initializeRange();
      this.insertContent([this.range.createContextualFragment(this.content)]);
    }

    setTimeout(function() {content.evalScripts()}, 10);
  },

  contentFromAnonymousTable: function() {
    var div = document.createElement('div');
    div.innerHTML = '<table><tbody>' + this.content + '</tbody></table>';
    return $A(div.childNodes[0].childNodes[0].childNodes);
  }
}

var Insertion = new Object();

Insertion.Before = Class.create();
Insertion.Before.prototype = Object.extend(new Abstract.Insertion('beforeBegin'), {
  initializeRange: function() {
    this.range.setStartBefore(this.element);
  },

  insertContent: function(fragments) {
    fragments.each((function(fragment) {
      this.element.parentNode.insertBefore(fragment, this.element);
    }).bind(this));
  }
});

Insertion.Top = Class.create();
Insertion.Top.prototype = Object.extend(new Abstract.Insertion('afterBegin'), {
  initializeRange: function() {
    this.range.selectNodeContents(this.element);
    this.range.collapse(true);
  },

  insertContent: function(fragments) {
    fragments.reverse().each((function(fragment) {
      this.element.insertBefore(fragment, this.element.firstChild);
    }).bind(this));
  }
});

Insertion.Bottom = Class.create();
Insertion.Bottom.prototype = Object.extend(new Abstract.Insertion('beforeEnd'), {
  initializeRange: function() {
    this.range.selectNodeContents(this.element);
    this.range.collapse(this.element);
  },

  insertContent: function(fragments) {
    fragments.each((function(fragment) {
      this.element.appendChild(fragment);
    }).bind(this));
  }
});

Insertion.After = Class.create();
Insertion.After.prototype = Object.extend(new Abstract.Insertion('afterEnd'), {
  initializeRange: function() {
    this.range.setStartAfter(this.element);
  },

  insertContent: function(fragments) {
    fragments.each((function(fragment) {
      this.element.parentNode.insertBefore(fragment,
        this.element.nextSibling);
    }).bind(this));
  }
});

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

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set(this.toArray().concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set(this.select(function(className) {
      return className != classNameToRemove;
    }).join(' '));
  },

  toString: function() {
    return this.toArray().join(' ');
  }
}

Object.extend(Element.ClassNames.prototype, Enumerable);
var Field = {
  clear: function() {
    for (var i = 0; i < arguments.length; i++)
      $(arguments[i]).value = '';
  },

  focus: function(element) {
    $(element).focus();
  },

  present: function() {
    for (var i = 0; i < arguments.length; i++)
      if ($(arguments[i]).value == '') return false;
    return true;
  },

  select: function(element) {
    $(element).select();
  },

  activate: function(element) {
    element = $(element);
    element.focus();
    if (element.select)
      element.select();
  }
}

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

var Form = {
  serialize: function(form) {
    var elements = Form.getElements($(form));
    var queryComponents = new Array();

    for (var i = 0; i < elements.length; i++) {
      var queryComponent = Form.Element.serialize(elements[i]);
      if (queryComponent)
        queryComponents.push(queryComponent);
    }

    return queryComponents.join('&');
  },

  getElements: function(form) {
    form = $(form);
    var elements = new Array();

    for (tagName in Form.Element.Serializers) {
      var tagElements = form.getElementsByTagName(tagName);
      for (var j = 0; j < tagElements.length; j++)
        elements.push(tagElements[j]);
    }
    return elements;
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name)
      return inputs;

    var matchingInputs = new Array();
    for (var i = 0; i < inputs.length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) ||
          (name && input.name != name))
        continue;
      matchingInputs.push(input);
    }

    return matchingInputs;
  },

  disable: function(form) {
    var elements = Form.getElements(form);
    for (var i = 0; i < elements.length; i++) {
      var element = elements[i];
      element.blur();
      element.disabled = 'true';
    }
  },

  enable: function(form) {
    var elements = Form.getElements(form);
    for (var i = 0; i < elements.length; i++) {
      var element = elements[i];
      element.disabled = '';
    }
  },

  findFirstElement: function(form) {
    return Form.getElements(form).find(function(element) {
      return element.type != 'hidden' && !element.disabled &&
        ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    Field.activate(Form.findFirstElement(form));
  },

  reset: function(form) {
    $(form).reset();
  }
}

Form.Element = {
  serialize: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    var parameter = Form.Element.Serializers[method](element);

    if (parameter)
      return encodeURIComponent(parameter[0]) + '=' +
        encodeURIComponent(parameter[1]);
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    var parameter = Form.Element.Serializers[method](element);

    if (parameter)
      return parameter[1];
  }
}

Form.Element.Serializers = {
  input: function(element) {
    switch (element.type.toLowerCase()) {
      case 'submit':
      case 'hidden':
      case 'password':
      case 'text':
        return Form.Element.Serializers.textarea(element);
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element);
    }
    return false;
  },

  inputSelector: function(element) {
    if (element.checked)
      return [element.name, element.value];
  },

  textarea: function(element) {
    return [element.name, element.value];
  },

  select: function(element) {
    return Form.Element.Serializers[element.type == 'select-one' ?
      'selectOne' : 'selectMany'](element);
  },

  selectOne: function(element) {
    var value = '', opt, index = element.selectedIndex;
    if (index >= 0) {
      opt = element.options[index];
      value = opt.value;
      if (!value && !('value' in opt))
        value = opt.text;
    }
    return [element.name, value];
  },

  selectMany: function(element) {
    var value = new Array();
    for (var i = 0; i < element.length; i++) {
      var opt = element.options[i];
      if (opt.selected) {
        var optValue = opt.value;
        if (!optValue && !('value' in opt))
          optValue = opt.text;
        value.push(optValue);
      }
    }
    return [element.name, value];
  }
}

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

var $F = Form.Element.getValue;

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

Abstract.TimedObserver = function() {}
Abstract.TimedObserver.prototype = {
  initialize: function(element, frequency, callback) {
    this.frequency = frequency;
    this.element   = $(element);
    this.callback  = callback;

    this.lastValue = this.getValue();
    this.registerCallback();
  },

  registerCallback: function() {
    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  onTimerEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
}

Form.Element.Observer = Class.create();
Form.Element.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create();
Form.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

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

Abstract.EventObserver = function() {}
Abstract.EventObserver.prototype = {
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    var elements = Form.getElements(this.element);
    for (var i = 0; i < elements.length; i++)
      this.registerCallback(elements[i]);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        case 'password':
        case 'text':
        case 'textarea':
        case 'select-one':
        case 'select-multiple':
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
}

Form.Element.EventObserver = Class.create();
Form.Element.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create();
Form.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) {
  var Event = new Object();
}

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,

  element: function(event) {
    return event.target || event.srcElement;
  },

  isLeftClick: function(event) {
    return (((event.which) && (event.which == 1)) ||
            ((event.button) && (event.button == 1)));
  },

  pointerX: function(event) {
    return event.pageX || (event.clientX +
      (document.documentElement.scrollLeft || document.body.scrollLeft));
  },

  pointerY: function(event) {
    return event.pageY || (event.clientY +
      (document.documentElement.scrollTop || document.body.scrollTop));
  },

  stop: function(event) {
    if (event.preventDefault) {
      event.preventDefault();
      event.stopPropagation();
    } else {
      event.returnValue = false;
      event.cancelBubble = true;
    }
  },

  // find the first node with the given tagName, starting from the
  // node the event was triggered on; traverses the DOM upwards
  findElement: function(event, tagName) {
    var element = Event.element(event);
    while (element.parentNode && (!element.tagName ||
        (element.tagName.toUpperCase() != tagName.toUpperCase())))
      element = element.parentNode;
    return element;
  },

  observers: false,

  _observeAndCache: function(element, name, observer, useCapture) {
    if (!this.observers) this.observers = [];
    if (element.addEventListener) {
      this.observers.push([element, name, observer, useCapture]);
      element.addEventListener(name, observer, useCapture);
    } else if (element.attachEvent) {
      this.observers.push([element, name, observer, useCapture]);
      element.attachEvent('on' + name, observer);
    }
  },

  unloadCache: function() {
    if (!Event.observers) return;
    for (var i = 0; i < Event.observers.length; i++) {
      Event.stopObserving.apply(this, Event.observers[i]);
      Event.observers[i][0] = null;
    }
    Event.observers = false;
  },

  observe: function(element, name, observer, useCapture) {
    var element = $(element);
    useCapture = useCapture || false;

    if (name == 'keypress' &&
        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
        || element.attachEvent))
      name = 'keydown';

    this._observeAndCache(element, name, observer, useCapture);
  },

  stopObserving: function(element, name, observer, useCapture) {
    var element = $(element);
    useCapture = useCapture || false;

    if (name == 'keypress' &&
        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
        || element.detachEvent))
      name = 'keydown';

    if (element.removeEventListener) {
      element.removeEventListener(name, observer, useCapture);
    } else if (element.detachEvent) {
      element.detachEvent('on' + name, observer);
    }
  }
});

/* prevent memory leaks in IE */
Event.observe(window, 'unload', Event.unloadCache, false);
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  realOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return [valueL, valueT];
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return [valueL, valueT];
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        p = Element.getStyle(element, 'position');
        if (p == 'relative' || p == 'absolute') break;
      }
    } while (element);
    return [valueL, valueT];
  },

  offsetParent: function(element) {
    if (element.offsetParent) return element.offsetParent;
    if (element == document.body) return element;

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return element;

    return document.body;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = this.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = this.realOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = this.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  clone: function(source, target) {
    source = $(source);
    target = $(target);
    target.style.position = 'absolute';
    var offsets = this.cumulativeOffset(source);
    target.style.top    = offsets[1] + 'px';
    target.style.left   = offsets[0] + 'px';
    target.style.width  = source.offsetWidth + 'px';
    target.style.height = source.offsetHeight + 'px';
  },

  page: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent==document.body)
        if (Element.getStyle(element,'position')=='absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      valueT -= element.scrollTop  || 0;
      valueL -= element.scrollLeft || 0;
    } while (element = element.parentNode);

    return [valueL, valueT];
  },

  clone: function(source, target) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || {})

    // find page position of source
    source = $(source);
    var p = Position.page(source);

    // find coordinate system to use
    target = $(target);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(target,'position') == 'absolute') {
      parent = Position.offsetParent(target);
      delta = Position.page(parent);
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if(options.setLeft)   target.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if(options.setTop)    target.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if(options.setWidth)  target.style.width = source.offsetWidth + 'px';
    if(options.setHeight) target.style.height = source.offsetHeight + 'px';
  },

  absolutize: function(element) {
    element = $(element);
    if (element.style.position == 'absolute') return;
    Position.prepare();

    var offsets = Position.positionedOffset(element);
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';;
    element.style.left   = left + 'px';;
    element.style.width  = width + 'px';;
    element.style.height = height + 'px';;
  },

  relativize: function(element) {
    element = $(element);
    if (element.style.position == 'relative') return;
    Position.prepare();

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
  }
}

// Safari returns margins on body which is incorrect if the child is absolutely
// positioned.  For performance reasons, redefine Position.cumulativeOffset for
// KHTML/WebKit only.
if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
  Position.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return [valueL, valueT];
  }
}


/* From: /eprints/eprints/software/eprints-materiali-didattici/lib/static/javascript/auto/30_scriptaculous_01_builder.js */

// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//
// See scriptaculous.js for full license.

var Builder = {
  NODEMAP: {
    AREA: 'map',
    CAPTION: 'table',
    COL: 'table',
    COLGROUP: 'table',
    LEGEND: 'fieldset',
    OPTGROUP: 'select',
    OPTION: 'select',
    PARAM: 'object',
    TBODY: 'table',
    TD: 'table',
    TFOOT: 'table',
    TH: 'table',
    THEAD: 'table',
    TR: 'table'
  },
  // note: For Firefox < 1.5, OPTION and OPTGROUP tags are currently broken,
  //       due to a Firefox bug
  node: function(elementName) {
    elementName = elementName.toUpperCase();
    
    // try innerHTML approach
    var parentTag = this.NODEMAP[elementName] || 'div';
    var parentElement = document.createElement(parentTag);
    try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
      parentElement.innerHTML = "<" + elementName + "></" + elementName + ">";
    } catch(e) {}
    var element = parentElement.firstChild || null;
      
    // see if browser added wrapping tags
    if(element && (element.tagName != elementName))
      element = element.getElementsByTagName(elementName)[0];
    
    // fallback to createElement approach
    if(!element) element = document.createElement(elementName);
    
    // abort if nothing could be created
    if(!element) return;

    // attributes (or text)
    if(arguments[1])
      if(this._isStringOrNumber(arguments[1]) ||
        (arguments[1] instanceof Array)) {
          this._children(element, arguments[1]);
        } else {
          var attrs = this._attributes(arguments[1]);
          if(attrs.length) {
            try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
              parentElement.innerHTML = "<" +elementName + " " +
                attrs + "></" + elementName + ">";
            } catch(e) {}
            element = parentElement.firstChild || null;
            // workaround firefox 1.0.X bug
            if(!element) {
              element = document.createElement(elementName);
              for(attr in arguments[1]) 
                element[attr == 'class' ? 'className' : attr] = arguments[1][attr];
            }
            if(element.tagName != elementName)
              element = parentElement.getElementsByTagName(elementName)[0];
            }
        } 

    // text, or array of children
    if(arguments[2])
      this._children(element, arguments[2]);

     return element;
  },
  _text: function(text) {
     return document.createTextNode(text);
  },
  _attributes: function(attributes) {
    var attrs = [];
    for(attribute in attributes)
      attrs.push((attribute=='className' ? 'class' : attribute) +
          '="' + attributes[attribute].toString().escapeHTML() + '"');
    return attrs.join(" ");
  },
  _children: function(element, children) {
    if(typeof children=='object') { // array can hold nodes and text
      children.flatten().each( function(e) {
        if(typeof e=='object')
          element.appendChild(e)
        else
          if(Builder._isStringOrNumber(e))
            element.appendChild(Builder._text(e));
      });
    } else
      if(Builder._isStringOrNumber(children)) 
         element.appendChild(Builder._text(children));
  },
  _isStringOrNumber: function(param) {
    return(typeof param=='string' || typeof param=='number');
  }
}


/* From: /eprints/eprints/software/eprints-materiali-didattici/lib/static/javascript/auto/30_scriptaculous_02_effects.js */

// 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() {  
  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.collectTextNodesIgnoreClass = function(element, ignoreclass) {  
  var children = $(element).childNodes;  
  var text     = "";  
  var classtest = new RegExp("^([^ ]+ )*" + ignoreclass+ "( [^ ]+)*$","i");  
 
  for (var i = 0; i < children.length; i++) {  
    if(children[i].nodeType==3) {  
      text+=children[i].nodeValue;  
    } else {  
      if((!children[i].className.match(classtest)) && children[i].hasChildNodes())  
        text += Element.collectTextNodesIgnoreClass(children[i], ignoreclass);  
    }  
  }  
 
  return text;
}

Element.setContentZoom = function(element, percent) {  
  element = $(element);  
  element.style.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);  
  var els = element.style;  
  if (value == 1){  
    els.opacity = '0.999999';  
    if(/MSIE/.test(navigator.userAgent))  
      els.filter = Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'');  
  } else {  
    if(value < 0.00001) value = 0;  
    els.opacity = value;  
    if(/MSIE/.test(navigator.userAgent))  
      els.filter = Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'') +  
        "alpha(opacity="+value*100+")";  
  }   
}  
 
Element.getInlineOpacity = function(element){  
  element= $(element);  
  var op;  
  op = element.style.opacity;  
  if (typeof op != "undefined" && op != "") return op;  
  return "";  
}  
 
Element.setInlineOpacity = function(element, value){  
  element= $(element);  
  var els = element.style;  
  els.opacity = value;  
}  
 
Element.childrenWithClassName = function(element, className) {  
  return $A($(element).getElementsByTagName('*')).select(
    function(c) { return Element.hasClassName(c, className) });
}  
 
/*--------------------------------------------------------------------------*/

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 speed = options.speed;
    var delay = options.delay;

    $A(elements).each( function(element, index) {
      new effect(element, Object.extend(options, { delay: delay + index * speed }));
    });
  }
};

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.Queue = {
  effects:  [],
  _each: function(iterator) {
    this.effects._each(iterator);
  },
  interval: null,
  add: function(effect) {
    var timestamp = new Date().getTime();
    
    switch(effect.options.queue) {
      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);
  }
}
Object.extend(Effect.Queue, Enumerable);

Effect.Base = function() {};
Effect.Base.prototype = {
  position: null,
  setOptions: function(options) {
    this.options = Object.extend({
      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'
    }, options || {});
  },
  start: function(options) {
    this.setOptions(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.Queue.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.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.Queue.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);
  }
}

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))
      this.element.style.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.MoveBy = Class.create();
Object.extend(Object.extend(Effect.MoveBy.prototype, Effect.Base.prototype), {
  initialize: function(element, toTop, toLeft) {
    this.element      = $(element);
    this.toTop        = toTop;
    this.toLeft       = toLeft;
    this.start(arguments[3]);
  },
  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.originalTop  = parseFloat(Element.getStyle(this.element,'top')  || '0');
    this.originalLeft = parseFloat(Element.getStyle(this.element,'left') || '0');
  },
  update: function(position) {
    var topd  = this.toTop  * position + this.originalTop;
    var leftd = this.toLeft * position + this.originalLeft;
    this.setPosition(topd, leftd);
  },
  setPosition: function(topd, leftd) {
    this.element.style.top  = topd  + "px";
    this.element.style.left = leftd + "px";
  }
});

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() {
    var effect = this;
    
    this.restoreAfterFinish = this.options.restoreAfterFinish || false;
    this.elementPositioning = Element.getStyle(this.element,'position');
    
    effect.originalStyle = {};
    ['top','left','width','height','fontSize'].each( function(k) {
      effect.originalStyle[k] = effect.element.style[k];
    });
      
    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) {
        effect.fontSize     = parseFloat(fontSize);
        effect.fontSizeType = fontSizeType;
      }
    });
    
    this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
    
    this.dims = null;
    if(this.options.scaleMode=='box')
      this.dims = [this.element.clientHeight, this.element.clientWidth];
    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.style.fontSize = this.fontSize*currentScale + this.fontSizeType;
    this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
  },
  finish: function(position) {
    if (this.restoreAfterFinish) {
      var effect = this;
      ['top','left','width','height','fontSize'].each( function(k) {
        effect.element.style[k] = effect.originalStyle[k];
      });
    }
  },
  setDimensions: function(height, width) {
    var els = this.element.style;
    if(this.options.scaleX) els.width = width + 'px';
    if(this.options.scaleY) els.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) els.top = this.originalTop-topd + "px";
        if(this.options.scaleX) els.left = this.originalLeft-leftd + "px";
      } else {
        if(this.options.scaleY) els.top = -topd + "px";
        if(this.options.scaleX) els.left = -leftd + "px";
      }
    }
  }
});

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(this.element.style.display=='none') { this.cancel(); return; }
    // Disable background image during the effect
    this.oldBgImage = this.element.style.backgroundImage;
    this.element.style.backgroundImage = "none";
    if(!this.options.endcolor)
      this.options.endcolor = Element.getStyle(this.element, 'background-color').parseColor('#ffffff');
    if (typeof this.options.restorecolor == "undefined")
      this.options.restorecolor = this.element.style.backgroundColor;
    // init color calculations
    this.colors_base = [
      parseInt(this.options.startcolor.slice(1,3),16),
      parseInt(this.options.startcolor.slice(3,5),16),
      parseInt(this.options.startcolor.slice(5),16) ];
    this.colors_delta = [
      parseInt(this.options.endcolor.slice(1,3),16)-this.colors_base[0],
      parseInt(this.options.endcolor.slice(3,5),16)-this.colors_base[1],
      parseInt(this.options.endcolor.slice(5),16)-this.colors_base[2]];
  },
  update: function(position) {
    var effect = this; var colors = $R(0,2).map( function(i){ 
      return Math.round(effect.colors_base[i]+(effect.colors_delta[i]*position))
    });
    this.element.style.backgroundColor = "#" +
      colors[0].toColorPart() + colors[1].toColorPart() + colors[2].toColorPart();
  },
  finish: function() {
    this.element.style.backgroundColor = this.options.restorecolor;
    this.element.style.backgroundImage = this.oldBgImage;
  }
});

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);
    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) 
    { if (effect.options.to == 0) {
        Element.hide(effect.element);
        Element.setInlineOpacity(effect.element, 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)  
    { Element.setOpacity(effect.element, effect.options.from);
      Element.show(effect.element); }
  }, arguments[1] || {});
  return new Effect.Opacity(element,options);
}

Effect.Puff = function(element) {
  element = $(element);
  var oldOpacity = Element.getInlineOpacity(element);
  var oldPosition = element.style.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) 
       { effect.effects[0].element.style.position = 'absolute'; },
      afterFinishInternal: function(effect)
       { Element.hide(effect.effects[0].element);
         effect.effects[0].element.style.position = oldPosition;
         Element.setInlineOpacity(effect.effects[0].element, oldOpacity); }
     }, 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)
        { 
          Element.hide(effect.element);
          Element.undoClipping(effect.element);
        } 
    }, arguments[1] || {})
  );
}

Effect.BlindDown = function(element) {
  element = $(element);
  var oldHeight = element.style.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) {
        Element.makeClipping(effect.element);
        effect.element.style.height = "0px";
        Element.show(effect.element); 
      },  
      afterFinishInternal: function(effect) {
        Element.undoClipping(effect.element);
        effect.element.style.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) { 
          Element.makePositioned(effect.element); 
          Element.makeClipping(effect.element);
        },
        afterFinishInternal: function(effect) { 
          Element.hide(effect.element); 
          Element.undoClipping(effect.element);
          Element.undoPositioned(effect.element);
          Element.setInlineOpacity(effect.element, oldOpacity);
        }
      })
    }
  });
}

Effect.DropOut = function(element) {
  element = $(element);
  var oldTop = element.style.top;
  var oldLeft = element.style.left;
  var oldOpacity = Element.getInlineOpacity(element);
  return new Effect.Parallel(
    [ new Effect.MoveBy(element, 100, 0, { sync: true }), 
      new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
    Object.extend(
      { duration: 0.5,
        beforeSetup: function(effect) { 
          Element.makePositioned(effect.effects[0].element); },
        afterFinishInternal: function(effect) { 
          Element.hide(effect.effects[0].element); 
          Element.undoPositioned(effect.effects[0].element);
          effect.effects[0].element.style.left = oldLeft;
          effect.effects[0].element.style.top = oldTop;
          Element.setInlineOpacity(effect.effects[0].element, oldOpacity); } 
      }, arguments[1] || {}));
}

Effect.Shake = function(element) {
  element = $(element);
  var oldTop = element.style.top;
  var oldLeft = element.style.left;
  return new Effect.MoveBy(element, 0, 20, 
    { duration: 0.05, afterFinishInternal: function(effect) {
  new Effect.MoveBy(effect.element, 0, -40, 
    { duration: 0.1, afterFinishInternal: function(effect) {
  new Effect.MoveBy(effect.element, 0, 40, 
    { duration: 0.1, afterFinishInternal: function(effect) {
  new Effect.MoveBy(effect.element, 0, -40, 
    { duration: 0.1, afterFinishInternal: function(effect) {
  new Effect.MoveBy(effect.element, 0, 40, 
    { duration: 0.1, afterFinishInternal: function(effect) {
  new Effect.MoveBy(effect.element, 0, -20, 
    { duration: 0.05, afterFinishInternal: function(effect) {
        Element.undoPositioned(effect.element);
        effect.element.style.left = oldLeft;
        effect.element.style.top = oldTop;
  }}) }}) }}) }}) }}) }});
}

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

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

Effect.Grow = function(element) {
  element = $(element);
  var options = arguments[1] || {};
  
  var elementDimensions = Element.getDimensions(element);
  var originalWidth = elementDimensions.width;
  var originalHeight = elementDimensions.height;
  var oldTop = element.style.top;
  var oldLeft = element.style.left;
  var oldHeight = element.style.height;
  var oldWidth = element.style.width;
  var oldOpacity = Element.getInlineOpacity(element);
  
  var direction = options.direction || 'center';
  var moveTransition = options.moveTransition || Effect.Transitions.sinoidal;
  var scaleTransition = options.scaleTransition || Effect.Transitions.sinoidal;
  var opacityTransition = options.opacityTransition || Effect.Transitions.full;
  
  var initialMoveX, initialMoveY;
  var moveX, moveY;
  
  switch (direction) {
    case 'top-left':
      initialMoveX = initialMoveY = moveX = moveY = 0; 
      break;
    case 'top-right':
      initialMoveX = originalWidth;
      initialMoveY = moveY = 0;
      moveX = -originalWidth;
      break;
    case 'bottom-left':
      initialMoveX = moveX = 0;
      initialMoveY = originalHeight;
      moveY = -originalHeight;
      break;
    case 'bottom-right':
      initialMoveX = originalWidth;
      initialMoveY = originalHeight;
      moveX = -originalWidth;
      moveY = -originalHeight;
      break;
    case 'center':
      initialMoveX = originalWidth / 2;
      initialMoveY = originalHeight / 2;
      moveX = -originalWidth / 2;
      moveY = -originalHeight / 2;
      break;
  }
  
  return new Effect.MoveBy(element, initialMoveY, initialMoveX, { 
    duration: 0.01, 
    beforeSetup: function(effect) { 
      Element.hide(effect.element);
      Element.makeClipping(effect.element);
      Element.makePositioned(effect.element);
    },
    afterFinishInternal: function(effect) {
      new Effect.Parallel(
        [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: opacityTransition }),
          new Effect.MoveBy(effect.element, moveY, moveX, { sync: true, transition: moveTransition }),
          new Effect.Scale(effect.element, 100, {
            scaleMode: { originalHeight: originalHeight, originalWidth: originalWidth }, 
            sync: true, scaleFrom: window.opera ? 1 : 0, transition: scaleTransition, restoreAfterFinish: true})
        ], Object.extend({
             beforeSetup: function(effect) {
              effect.effects[0].element.style.height = 0;
              Element.show(effect.effects[0].element);
             },              
             afterFinishInternal: function(effect) {
               var el = effect.effects[0].element;
               var els = el.style;
               Element.undoClipping(el); 
               Element.undoPositioned(el);
               els.top = oldTop;
               els.left = oldLeft;
               els.height = oldHeight;
               els.width = originalWidth + 'px';
               Element.setInlineOpacity(el, oldOpacity);
             }
           }, options)
      )
    }
  });
}

Effect.Shrink = function(element) {
  element = $(element);
  var options = arguments[1] || {};
  
  var originalWidth = element.clientWidth;
  var originalHeight = element.clientHeight;
  var oldTop = element.style.top;
  var oldLeft = element.style.left;
  var oldHeight = element.style.height;
  var oldWidth = element.style.width;
  var oldOpacity = Element.getInlineOpacity(element);

  var direction = options.direction || 'center';
  var moveTransition = options.moveTransition || Effect.Transitions.sinoidal;
  var scaleTransition = options.scaleTransition || Effect.Transitions.sinoidal;
  var opacityTransition = options.opacityTransition || Effect.Transitions.none;
  
  var moveX, moveY;
  
  switch (direction) {
    case 'top-left':
      moveX = moveY = 0;
      break;
    case 'top-right':
      moveX = originalWidth;
      moveY = 0;
      break;
    case 'bottom-left':
      moveX = 0;
      moveY = originalHeight;
      break;
    case 'bottom-right':
      moveX = originalWidth;
      moveY = originalHeight;
      break;
    case 'center':  
      moveX = originalWidth / 2;
      moveY = originalHeight / 2;
      break;
  }
  
  return new Effect.Parallel(
    [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: opacityTransition }),
      new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: scaleTransition, restoreAfterFinish: true}),
      new Effect.MoveBy(element, moveY, moveX, { sync: true, transition: moveTransition })
    ], Object.extend({            
         beforeStartInternal: function(effect) { 
           Element.makePositioned(effect.effects[0].element);
           Element.makeClipping(effect.effects[0].element);
         },
         afterFinishInternal: function(effect) {
           var el = effect.effects[0].element;
           var els = el.style;
           Element.hide(el);
           Element.undoClipping(el); 
           Element.undoPositioned(el);
           els.top = oldTop;
           els.left = oldLeft;
           els.height = oldHeight;
           els.width = oldWidth;
           Element.setInlineOpacity(el, oldOpacity);
         }
       }, 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.setInlineOpacity(effect.element, oldOpacity); }
    }, options), {transition: reverser}));
}

Effect.Fold = function(element) {
  element = $(element);
  var originalTop = element.style.top;
  var originalLeft = element.style.left;
  var originalWidth = element.style.width;
  var originalHeight = 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) { 
        Element.hide(effect.element);  
        Element.undoClipping(effect.element); 
        effect.element.style.top = originalTop;
        effect.element.style.left = originalLeft;
        effect.element.style.width = originalWidth;
        effect.element.style.height = originalHeight;
      } });
  }}, arguments[1] || {}));
}



/* From: /eprints/eprints/software/eprints-materiali-didattici/lib/static/javascript/auto/30_scriptaculous_03_dragdrop.js */

// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// 
// See scriptaculous.js for full license.

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

var Droppables = {
  drops: [],

  remove: function(element) {
    this.drops = this.drops.reject(function(d) { return d.element==$(element) });
  },

  add: function(element) {
    element = $(element);
    var options = Object.extend({
      greedy:     true,
      hoverclass: null  
    }, arguments[1] || {});

    // cache containers
    if(options.containment) {
      options._containers = [];
      var containment = options.containment;
      if((typeof containment == 'object') && 
        (containment.constructor == Array)) {
        containment.each( function(c) { options._containers.push($(c)) });
      } else {
        options._containers.push($(containment));
      }
    }
    
    if(options.accept) options.accept = [options.accept].flatten();

    Element.makePositioned(element); // fix IE
    options.element = element;

    this.drops.push(options);
  },

  isContained: function(element, drop) {
    var parentNode = element.parentNode;
    return drop._containers.detect(function(c) { return parentNode == c });
  },

  isAffected: function(pX, pY, element, drop) {
    return (
      (drop.element!=element) &&
      ((!drop._containers) ||
        this.isContained(element, drop)) &&
      ((!drop.accept) ||
        (Element.classNames(element).detect( 
          function(v) { return drop.accept.include(v) } ) )) &&
      Position.within(drop.element, pX, pY) );
  },

  deactivate: function(drop) {
    if(drop.hoverclass)
      Element.removeClassName(drop.element, drop.hoverclass);
    this.last_active = null;
  },

  activate: function(drop) {
    if(this.last_active) this.deactivate(this.last_active);
    if(drop.hoverclass)
      Element.addClassName(drop.element, drop.hoverclass);
    this.last_active = drop;
  },

  show: function(event, element) {
    if(!this.drops.length) return;
    var pX = Event.pointerX(event);
    var pY = Event.pointerY(event);
    Position.prepare();

    var i = this.drops.length-1; do {
      var drop = this.drops[i];
      if(this.isAffected(pX, pY, element, drop)) {
        if(drop.onHover)
           drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
        if(drop.greedy) { 
          this.activate(drop);
          return;
        }
      }
    } while (i--);
    
    if(this.last_active) this.deactivate(this.last_active);
  },

  fire: function(event, element) {
    if(!this.last_active) return;
    Position.prepare();

    if (this.isAffected(Event.pointerX(event), Event.pointerY(event), element, this.last_active))
      if (this.last_active.onDrop) 
        this.last_active.onDrop(element, this.last_active.element, event);
  },

  reset: function() {
    if(this.last_active)
      this.deactivate(this.last_active);
  }
}

var Draggables = {
  observers: [],
  addObserver: function(observer) {
    this.observers.push(observer);
    this._cacheObserverCallbacks();
  },
  removeObserver: function(element) {  // element instead of observer fixes mem leaks
    this.observers = this.observers.reject( function(o) { return o.element==element });
    this._cacheObserverCallbacks();
  },
  notify: function(eventName, draggable, event) {  // 'onStart', 'onEnd', 'onDrag'
    if(this[eventName+'Count'] > 0)
      this.observers.each( function(o) {
        if(o[eventName]) o[eventName](eventName, draggable, event);
      });
  },
  _cacheObserverCallbacks: function() {
    ['onStart','onEnd','onDrag'].each( function(eventName) {
      Draggables[eventName+'Count'] = Draggables.observers.select(
        function(o) { return o[eventName]; }
      ).length;
    });
  }
}

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

var Draggable = Class.create();
Draggable.prototype = {
  initialize: function(element) {
    var options = Object.extend({
      handle: false,
      starteffect: function(element) { 
        new Effect.Opacity(element, {duration:0.2, from:1.0, to:0.7}); 
      },
      reverteffect: function(element, top_offset, left_offset) {
        var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02;
        new Effect.MoveBy(element, -top_offset, -left_offset, {duration:dur});
      },
      endeffect: function(element) { 
         new Effect.Opacity(element, {duration:0.2, from:0.7, to:1.0}); 
      },
      zindex: 1000,
      revert: false,
      snap: false   // false, or xy or [x,y] or function(x,y){ return [x,y] }
    }, arguments[1] || {});

    this.element      = $(element);
    if(options.handle && (typeof options.handle == 'string'))
      this.handle = Element.childrenWithClassName(this.element, options.handle)[0];
      
    if(!this.handle) this.handle = $(options.handle);
    if(!this.handle) this.handle = this.element;

    Element.makePositioned(this.element); // fix IE    

    this.offsetX      = 0;
    this.offsetY      = 0;
    this.originalLeft = this.currentLeft();
    this.originalTop  = this.currentTop();
    this.originalX    = this.element.offsetLeft;
    this.originalY    = this.element.offsetTop;

    this.options      = options;

    this.active       = false;
    this.dragging     = false;   

    this.eventMouseDown = this.startDrag.bindAsEventListener(this);
    this.eventMouseUp   = this.endDrag.bindAsEventListener(this);
    this.eventMouseMove = this.update.bindAsEventListener(this);
    this.eventKeypress  = this.keyPress.bindAsEventListener(this);
    
    this.registerEvents();
  },
  destroy: function() {
    Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
    this.unregisterEvents();
  },
  registerEvents: function() {
    Event.observe(document, "mouseup", this.eventMouseUp);
    Event.observe(document, "mousemove", this.eventMouseMove);
    Event.observe(document, "keypress", this.eventKeypress);
    Event.observe(this.handle, "mousedown", this.eventMouseDown);
  },
  unregisterEvents: function() {
    //if(!this.active) return;
    //Event.stopObserving(document, "mouseup", this.eventMouseUp);
    //Event.stopObserving(document, "mousemove", this.eventMouseMove);
    //Event.stopObserving(document, "keypress", this.eventKeypress);
  },
  currentLeft: function() {
    return parseInt(this.element.style.left || '0');
  },
  currentTop: function() {
    return parseInt(this.element.style.top || '0')
  },
  startDrag: function(event) {
    if(Event.isLeftClick(event)) {
      
      // abort on form elements, fixes a Firefox issue
      var src = Event.element(event);
      if(src.tagName && (
        src.tagName=='INPUT' ||
        src.tagName=='SELECT' ||
        src.tagName=='BUTTON' ||
        src.tagName=='TEXTAREA')) return;
      
      // this.registerEvents();
      this.active = true;
      var pointer = [Event.pointerX(event), Event.pointerY(event)];
      var offsets = Position.cumulativeOffset(this.element);
      this.offsetX =  (pointer[0] - offsets[0]);
      this.offsetY =  (pointer[1] - offsets[1]);
      Event.stop(event);
    }
  },
  finishDrag: function(event, success) {
    // this.unregisterEvents();

    this.active = false;
    this.dragging = false;

    if(this.options.ghosting) {
      Position.relativize(this.element);
      Element.remove(this._clone);
      this._clone = null;
    }

    if(success) Droppables.fire(event, this.element);
    Draggables.notify('onEnd', this, event);

    var revert = this.options.revert;
    if(revert && typeof revert == 'function') revert = revert(this.element);

    if(revert && this.options.reverteffect) {
      this.options.reverteffect(this.element, 
      this.currentTop()-this.originalTop,
      this.currentLeft()-this.originalLeft);
    } else {
      this.originalLeft = this.currentLeft();
      this.originalTop  = this.currentTop();
    }

    if(this.options.zindex)
      this.element.style.zIndex = this.originalZ;

    if(this.options.endeffect) 
      this.options.endeffect(this.element);


    Droppables.reset();
  },
  keyPress: function(event) {
    if(this.active) {
      if(event.keyCode==Event.KEY_ESC) {
        this.finishDrag(event, false);
        Event.stop(event);
      }
    }
  },
  endDrag: function(event) {
    if(this.active && this.dragging) {
      this.finishDrag(event, true);
      Event.stop(event);
    }
    this.active = false;
    this.dragging = false;
  },
  draw: function(event) {
    var pointer = [Event.pointerX(event), Event.pointerY(event)];
    var offsets = Position.cumulativeOffset(this.element);
    offsets[0] -= this.currentLeft();
    offsets[1] -= this.currentTop();
    var style = this.element.style;
    
    var pos = [
      (pointer[0] - offsets[0] - this.offsetX),
      (pointer[1] - offsets[1] - this.offsetY)];
    
    if(this.options.snap) {
      if(typeof this.options.snap == 'function') {
        pos = this.options.snap(pos[0],pos[1]);
      } else {
      var draggable = this;
      if(this.options.snap instanceof Array) {
        pos = pos.collect( function(v, i) {
          return Math.round(v/draggable.options.snap[i])*draggable.options.snap[i] })
      } else {
        pos = pos.collect( function(v) {
          return Math.round(v/draggable.options.snap)*draggable.options.snap })
      }
    }}
    
    if((!this.options.constraint) || (this.options.constraint=='horizontal'))
      style.left = pos[0] + "px";
    if((!this.options.constraint) || (this.options.constraint=='vertical'))
      style.top  = pos[1] + "px";
    if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering
  },
  update: function(event) {
   if(this.active) {
      if(!this.dragging) {
        var style = this.element.style;
        this.dragging = true;
        
        if(Element.getStyle(this.element,'position')=='') 
          style.position = "relative";
        
        if(this.options.zindex) {
          this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0);
          style.zIndex = this.options.zindex;
        }

        if(this.options.ghosting) {
          this._clone = this.element.cloneNode(true);
          Position.absolutize(this.element);
          this.element.parentNode.insertBefore(this._clone, this.element);
        }

        Draggables.notify('onStart', this, event);
        if(this.options.starteffect) this.options.starteffect(this.element);
      }

      Droppables.show(event, this.element);
      Draggables.notify('onDrag', this, event);
      this.draw(event);
      if(this.options.change) this.options.change(this);

      // fix AppleWebKit rendering
      if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0); 

      Event.stop(event);
   }
  }
}

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

var SortableObserver = Class.create();
SortableObserver.prototype = {
  initialize: function(element, observer) {
    this.element   = $(element);
    this.observer  = observer;
    this.lastValue = Sortable.serialize(this.element);
  },
  onStart: function() {
    this.lastValue = Sortable.serialize(this.element);
  },
  onEnd: function() {
    Sortable.unmark();
    if(this.lastValue != Sortable.serialize(this.element))
      this.observer(this.element)
  }
}

var Sortable = {
  sortables: new Array(),
  options: function(element){
    element = $(element);
    return this.sortables.detect(function(s) { return s.element == element });
  },
  destroy: function(element){
    element = $(element);
    this.sortables.findAll(function(s) { return s.element == element }).each(function(s){
      Draggables.removeObserver(s.element);
      s.droppables.each(function(d){ Droppables.remove(d) });
      s.draggables.invoke('destroy');
    });
    this.sortables = this.sortables.reject(function(s) { return s.element == element });
  },
  create: function(element) {
    element = $(element);
    var options = Object.extend({ 
      element:     element,
      tag:         'li',       // assumes li children, override with tag: 'tagname'
      dropOnEmpty: false,
      tree:        false,      // fixme: unimplemented
      overlap:     'vertical', // one of 'vertical', 'horizontal'
      constraint:  'vertical', // one of 'vertical', 'horizontal', false
      containment: element,    // also takes array of elements (or id's); or false
      handle:      false,      // or a CSS class
      only:        false,
      hoverclass:  null,
      ghosting:    false,
      format:      null,
      onChange:    Prototype.emptyFunction,
      onUpdate:    Prototype.emptyFunction
    }, arguments[1] || {});

    // clear any old sortable with same element
    this.destroy(element);

    // build options for the draggables
    var options_for_draggable = {
      revert:      true,
      ghosting:    options.ghosting,
      constraint:  options.constraint,
      handle:      options.handle };

    if(options.starteffect)
      options_for_draggable.starteffect = options.starteffect;

    if(options.reverteffect)
      options_for_draggable.reverteffect = options.reverteffect;
    else
      if(options.ghosting) options_for_draggable.reverteffect = function(element) {
        element.style.top  = 0;
        element.style.left = 0;
      };

    if(options.endeffect)
      options_for_draggable.endeffect = options.endeffect;

    if(options.zindex)
      options_for_draggable.zindex = options.zindex;

    // build options for the droppables  
    var options_for_droppable = {
      overlap:     options.overlap,
      containment: options.containment,
      hoverclass:  options.hoverclass,
      onHover:     Sortable.onHover,
      greedy:      !options.dropOnEmpty
    }

    // fix for gecko engine
    Element.cleanWhitespace(element); 

    options.draggables = [];
    options.droppables = [];

    // make it so

    // drop on empty handling
    if(options.dropOnEmpty) {
      Droppables.add(element,
        {containment: options.containment, onHover: Sortable.onEmptyHover, greedy: false});
      options.droppables.push(element);
    }

    (this.findElements(element, options) || []).each( function(e) {
      // handles are per-draggable
      var handle = options.handle ? 
        Element.childrenWithClassName(e, options.handle)[0] : e;    
      options.draggables.push(
        new Draggable(e, Object.extend(options_for_draggable, { handle: handle })));
      Droppables.add(e, options_for_droppable);
      options.droppables.push(e);      
    });

    // keep reference
    this.sortables.push(options);

    // for onupdate
    Draggables.addObserver(new SortableObserver(element, options.onUpdate));

  },

  // return all suitable-for-sortable elements in a guaranteed order
  findElements: function(element, options) {
    if(!element.hasChildNodes()) return null;
    var elements = [];
    $A(element.childNodes).each( function(e) {
      if(e.tagName && e.tagName==options.tag.toUpperCase() &&
        (!options.only || (Element.hasClassName(e, options.only))))
          elements.push(e);
      if(options.tree) {
        var grandchildren = this.findElements(e, options);
        if(grandchildren) elements.push(grandchildren);
      }
    });

    return (elements.length>0 ? elements.flatten() : null);
  },

  onHover: function(element, dropon, overlap) {
    if(overlap>0.5) {
      Sortable.mark(dropon, 'before');
      if(dropon.previousSibling != element) {
        var oldParentNode = element.parentNode;
        element.style.visibility = "hidden"; // fix gecko rendering
        dropon.parentNode.insertBefore(element, dropon);
        if(dropon.parentNode!=oldParentNode) 
          Sortable.options(oldParentNode).onChange(element);
        Sortable.options(dropon.parentNode).onChange(element);
      }
    } else {
      Sortable.mark(dropon, 'after');
      var nextElement = dropon.nextSibling || null;
      if(nextElement != element) {
        var oldParentNode = element.parentNode;
        element.style.visibility = "hidden"; // fix gecko rendering
        dropon.parentNode.insertBefore(element, nextElement);
        if(dropon.parentNode!=oldParentNode) 
          Sortable.options(oldParentNode).onChange(element);
        Sortable.options(dropon.parentNode).onChange(element);
      }
    }
  },

  onEmptyHover: function(element, dropon) {
    if(element.parentNode!=dropon) {
      var oldParentNode = element.parentNode;
      dropon.appendChild(element);
      Sortable.options(oldParentNode).onChange(element);
      Sortable.options(dropon).onChange(element);
    }
  },

  unmark: function() {
    if(Sortable._marker) Element.hide(Sortable._marker);
  },

  mark: function(dropon, position) {
    // mark on ghosting only
    var sortable = Sortable.options(dropon.parentNode);
    if(sortable && !sortable.ghosting) return; 

    if(!Sortable._marker) {
      Sortable._marker = $('dropmarker') || document.createElement('DIV');
      Element.hide(Sortable._marker);
      Element.addClassName(Sortable._marker, 'dropmarker');
      Sortable._marker.style.position = 'absolute';
      document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);
    }    
    var offsets = Position.cumulativeOffset(dropon);
    Sortable._marker.style.left = offsets[0] + 'px';
    Sortable._marker.style.top = offsets[1] + 'px';
    
    if(position=='after')
      if(sortable.overlap == 'horizontal') 
        Sortable._marker.style.left = (offsets[0]+dropon.clientWidth) + 'px';
      else
        Sortable._marker.style.top = (offsets[1]+dropon.clientHeight) + 'px';
    
    Element.show(Sortable._marker);
  },

  serialize: function(element) {
    element = $(element);
    var sortableOptions = this.options(element);
    var options = Object.extend({
      tag:  sortableOptions.tag,
      only: sortableOptions.only,
      name: element.id,
      format: sortableOptions.format || /^[^_]*_(.*)$/
    }, arguments[1] || {});
    return $(this.findElements(element, options) || []).collect( function(item) {
      return (encodeURIComponent(options.name) + "[]=" + 
              encodeURIComponent(item.id.match(options.format) ? item.id.match(options.format)[1] : ''));
    }).join("&");
  }
} 


/* From: /eprints/eprints/software/eprints-materiali-didattici/lib/static/javascript/auto/30_scriptaculous_04_controls.js */

// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//           (c) 2005 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
//           (c) 2005 Jon Tirsen (http://www.tirsen.com)
// Contributors:
//  Richard Livsey
//  Rahul Bhargava
//  Rob Wills
// 
// See scriptaculous.js for full license.

// Autocompleter.Base handles all the autocompletion functionality 
// that's independent of the data source for autocompletion. This
// includes drawing the autocompletion menu, observing keyboard
// and mouse events, and similar.
//
// Specific autocompleters need to provide, at the very least, 
// a getUpdatedChoices function that will be invoked every time
// the text inside the monitored textbox changes. This method 
// should get the text for which to provide autocompletion by
// invoking this.getToken(), NOT by directly accessing
// this.element.value. This is to allow incremental tokenized
// autocompletion. Specific auto-completion logic (AJAX, etc)
// belongs in getUpdatedChoices.
//
// Tokenized incremental autocompletion is enabled automatically
// when an autocompleter is instantiated with the 'tokens' option
// in the options parameter, e.g.:
// new Ajax.Autocompleter('id','upd', '/url/', { tokens: ',' });
// will incrementally autocomplete with a comma as the token.
// Additionally, ',' in the above example can be replaced with
// a token array, e.g. { tokens: [',', '\n'] } which
// enables autocompletion on multiple tokens. This is most 
// useful when one of the tokens is \n (a newline), as it 
// allows smart autocompletion after linebreaks.

var Autocompleter = {}
Autocompleter.Base = function() {};
Autocompleter.Base.prototype = {
  baseInitialize: function(element, update, options) {
    this.element     = $(element); 
    this.update      = $(update);  
    this.hasFocus    = false; 
    this.changed     = false; 
    this.active      = false; 
    this.index       = 0;     
    this.entryCount  = 0;

    if (this.setOptions)
      this.setOptions(options);
    else
      this.options = options || {};

    this.options.container   = this.options.container || "";  
    this.options.paramName    = this.options.paramName || this.element.name;
    this.options.tokens       = this.options.tokens || [];
    this.options.frequency    = this.options.frequency || 0.4;
    this.options.minChars     = this.options.minChars || 1;
    this.options.change	      = this.options.change || function(element) { };
    this.options.onShow       = this.options.onShow || 
    function(element, update){ 
      if(!update.style.position || update.style.position=='absolute') {
        update.style.position = 'absolute';
        Position.clone(element, update, {setHeight: false, offsetTop: element.offsetHeight});
      }
      Effect.Appear(update,{duration:0.15});
    };
    this.options.onHide = this.options.onHide || 
    function(element, update){ new Effect.Fade(update,{duration:0.15}) };

    if (typeof(this.options.tokens) == 'string') 
      this.options.tokens = new Array(this.options.tokens);

    this.observer = null;
    
    this.element.setAttribute('autocomplete','off');

    Element.hide(this.update);

    Event.observe(this.element, "blur", this.onBlur.bindAsEventListener(this));
    Event.observe(this.element, "keypress", this.onKeyPress.bindAsEventListener(this));
  },

  show: function() {
    if(Element.getStyle(this.update, 'display')=='none') this.options.onShow(this.element, this.update);
    if(!this.iefix && 
      (navigator.appVersion.indexOf('MSIE')>0) &&
      (navigator.userAgent.indexOf('Opera')<0) &&
      (Element.getStyle(this.update, 'position')=='absolute')) {
      new Insertion.After(this.update, 
       '<iframe id="' + this.update.id + '_iefix" '+
       'style="display:none;position:absolute;filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0);" ' +
       'src="javascript:false;" frameborder="0" scrolling="no"></iframe>');
      this.iefix = $(this.update.id+'_iefix');
    }
    if(this.iefix) setTimeout(this.fixIEOverlapping.bind(this), 50);
  },
  
  fixIEOverlapping: function() {
    Position.clone(this.update, this.iefix);
    this.iefix.style.zIndex = 1;
    this.update.style.zIndex = 2;
    Element.show(this.iefix);
  },

  hide: function() {
    this.stopIndicator();
    if(Element.getStyle(this.update, 'display')!='none') this.options.onHide(this.element, this.update);
    if(this.iefix) Element.hide(this.iefix);
  },

  startIndicator: function() {
    if(this.options.indicator) Element.show(this.options.indicator);
  },

  stopIndicator: function() {
    if(this.options.indicator) Element.hide(this.options.indicator);
  },

  onKeyPress: function(event) {
    if(this.active)
      switch(event.keyCode) {
       case Event.KEY_TAB:
       case Event.KEY_RETURN:
         this.selectEntry();
         Event.stop(event);
       case Event.KEY_ESC:
         this.hide();
         this.active = false;
         Event.stop(event);
         return;
       case Event.KEY_LEFT:
       case Event.KEY_RIGHT:
         return;
       case Event.KEY_UP:
         this.markPrevious();
         this.render();
         if(navigator.appVersion.indexOf('AppleWebKit')>0) Event.stop(event);
         return;
       case Event.KEY_DOWN:
         this.markNext();
         this.render();
         if(navigator.appVersion.indexOf('AppleWebKit')>0) Event.stop(event);
         return;
      }
     else 
      if(event.keyCode==Event.KEY_TAB || event.keyCode==Event.KEY_RETURN) 
        return;

    this.changed = true;
    this.hasFocus = true;
    this.options.change(this.element, this.options.container);
    if(this.observer) clearTimeout(this.observer);
      this.observer = 
        setTimeout(this.onObserverEvent.bind(this), this.options.frequency*1000);
  },

  onHover: function(event) {
    var element = Event.findElement(event, 'LI');
    if(this.index != element.autocompleteIndex) 
    {
        this.index = element.autocompleteIndex;
        this.render();
    }
    Event.stop(event);
  },
  
  onClick: function(event) {
    var element = Event.findElement(event, 'LI');
    this.index = element.autocompleteIndex;
    this.selectEntry();
    this.hide();
  },
  
  onBlur: function(event) {
    // needed to make click events working
    setTimeout(this.hide.bind(this), 250);
    this.hasFocus = false;
    this.active = false;     
  }, 
  
  render: function() {
    if(this.entryCount > 0) {
      for (var i = 0; i < this.entryCount; i++)
        this.index==i ? 
          Element.addClassName(this.getEntry(i),"selected") : 
          Element.removeClassName(this.getEntry(i),"selected");
        
      if(this.hasFocus) { 
        this.show();
        this.active = true;
      }
    } else {
      this.active = false;
      this.hide();
    }
  },
  
  markPrevious: function() {
    if(this.index > 0) this.index--
      else this.index = this.entryCount-1;
  },
  
  markNext: function() {
    if(this.index < this.entryCount-1) this.index++
      else this.index = 0;
  },
  
  getEntry: function(index) {
    return this.update.firstChild.childNodes[index];
  },
  
  getCurrentEntry: function() {
    return this.getEntry(this.index);
  },
  
  selectEntry: function() {
    this.active = false;
    this.updateElement(this.getCurrentEntry());
  },

  updateElement: function(selectedElement) {
    if (this.options.updateElement) {
      this.options.updateElement(selectedElement);
      return;
    }

    var value = Element.collectTextNodesIgnoreClass(selectedElement, 'informal');
    var lastTokenPos = this.findLastToken();
    if (lastTokenPos != -1) {
      var newValue = this.element.value.substr(0, lastTokenPos + 1);
      var whitespace = this.element.value.substr(lastTokenPos + 1).match(/^\s+/);
      if (whitespace)
        newValue += whitespace[0];
      this.element.value = newValue + value;
    } else {
      this.element.value = value;
    }
    this.element.focus();
    
    if (this.options.afterUpdateElement)
      this.options.afterUpdateElement(this.element, selectedElement);
  },

  updateChoices: function(choices) {
    if(!this.changed && this.hasFocus) {
      this.update.innerHTML = choices;
      Element.cleanWhitespace(this.update);
      Element.cleanWhitespace(this.update.firstChild);

      if(this.update.firstChild && this.update.firstChild.childNodes) {
        this.entryCount = 
          this.update.firstChild.childNodes.length;
        for (var i = 0; i < this.entryCount; i++) {
          var entry = this.getEntry(i);
          entry.autocompleteIndex = i;
          this.addObservers(entry);
        }
      } else { 
        this.entryCount = 0;
      }

      this.stopIndicator();

      this.index = 0;
      this.render();
    }
  },

  addObservers: function(element) {
    Event.observe(element, "mouseover", this.onHover.bindAsEventListener(this));
    Event.observe(element, "click", this.onClick.bindAsEventListener(this));
  },

  onObserverEvent: function() {
    this.changed = false;   
    if(this.getToken().length>=this.options.minChars) {
      this.startIndicator();
      this.getUpdatedChoices();
    } else {
      this.active = false;
      this.hide();
    }
  },

  getToken: function() {
    var tokenPos = this.findLastToken();
    if (tokenPos != -1)
      var ret = this.element.value.substr(tokenPos + 1).replace(/^\s+/,'').replace(/\s+$/,'');
    else
      var ret = this.element.value;

    return /\n/.test(ret) ? '' : ret;
  },

  findLastToken: function() {
    var lastTokenPos = -1;

    for (var i=0; i<this.options.tokens.length; i++) {
      var thisTokenPos = this.element.value.lastIndexOf(this.options.tokens[i]);
      if (thisTokenPos > lastTokenPos)
        lastTokenPos = thisTokenPos;
    }
    return lastTokenPos;
  }
}

Ajax.Autocompleter = Class.create();
Object.extend(Object.extend(Ajax.Autocompleter.prototype, Autocompleter.Base.prototype), {
  initialize: function(element, update, url, options) {
	  this.baseInitialize(element, update, options);
    this.options.asynchronous  = true;
    this.options.onComplete    = this.onComplete.bind(this);
    this.options.defaultParams = this.options.parameters || null;
    this.url                   = url;
  },

  getUpdatedChoices: function() {
    entry = encodeURIComponent(this.options.paramName) + '=' + 
      encodeURIComponent(this.getToken());

    this.options.parameters = this.options.callback ?
      this.options.callback(this.element, entry) : entry;

    if(this.options.defaultParams) 
      this.options.parameters += '&' + this.options.defaultParams;

    new Ajax.Request(this.url, this.options);
  },

  onComplete: function(request) {
    this.updateChoices(request.responseText);
  }

});

// The local array autocompleter. Used when you'd prefer to
// inject an array of autocompletion options into the page, rather
// than sending out Ajax queries, which can be quite slow sometimes.
//
// The constructor takes four parameters. The first two are, as usual,
// the id of the monitored textbox, and id of the autocompletion menu.
// The third is the array you want to autocomplete from, and the fourth
// is the options block.
//
// Extra local autocompletion options:
// - choices - How many autocompletion choices to offer
//
// - partialSearch - If false, the autocompleter will match entered
//                    text only at the beginning of strings in the 
//                    autocomplete array. Defaults to true, which will
//                    match text at the beginning of any *word* in the
//                    strings in the autocomplete array. If you want to
//                    search anywhere in the string, additionally set
//                    the option fullSearch to true (default: off).
//
// - fullSsearch - Search anywhere in autocomplete array strings.
//
// - partialChars - How many characters to enter before triggering
//                   a partial match (unlike minChars, which defines
//                   how many characters are required to do any match
//                   at all). Defaults to 2.
//
// - ignoreCase - Whether to ignore case when autocompleting.
//                 Defaults to true.
//
// It's possible to pass in a custom function as the 'selector' 
// option, if you prefer to write your own autocompletion logic.
// In that case, the other options above will not apply unless
// you support them.

Autocompleter.Local = Class.create();
Autocompleter.Local.prototype = Object.extend(new Autocompleter.Base(), {
  initialize: function(element, update, array, options) {
    this.baseInitialize(element, update, options);
    this.options.array = array;
  },

  getUpdatedChoices: function() {
    this.updateChoices(this.options.selector(this));
  },

  setOptions: function(options) {
    this.options = Object.extend({
      choices: 10,
      partialSearch: true,
      partialChars: 2,
      ignoreCase: true,
      fullSearch: false,
      selector: function(instance) {
        var ret       = []; // Beginning matches
        var partial   = []; // Inside matches
        var entry     = instance.getToken();
        var count     = 0;

        for (var i = 0; i < instance.options.array.length &&  
          ret.length < instance.options.choices ; i++) { 

          var elem = instance.options.array[i];
          var foundPos = instance.options.ignoreCase ? 
            elem.toLowerCase().indexOf(entry.toLowerCase()) : 
            elem.indexOf(entry);

          while (foundPos != -1) {
            if (foundPos == 0 && elem.length != entry.length) { 
              ret.push("<li><strong>" + elem.substr(0, entry.length) + "</strong>" + 
                elem.substr(entry.length) + "</li>");
              break;
            } else if (entry.length >= instance.options.partialChars && 
              instance.options.partialSearch && foundPos != -1) {
              if (instance.options.fullSearch || /\s/.test(elem.substr(foundPos-1,1))) {
                partial.push("<li>" + elem.substr(0, foundPos) + "<strong>" +
                  elem.substr(foundPos, entry.length) + "</strong>" + elem.substr(
                  foundPos + entry.length) + "</li>");
                break;
              }
            }

            foundPos = instance.options.ignoreCase ? 
              elem.toLowerCase().indexOf(entry.toLowerCase(), foundPos + 1) : 
              elem.indexOf(entry, foundPos + 1);

          }
        }
        if (partial.length)
          ret = ret.concat(partial.slice(0, instance.options.choices - ret.length))
        return "<ul>" + ret.join('') + "</ul>";
      }
    }, options || {});
  }
});

// AJAX in-place editor
//
// see documentation on http://wiki.script.aculo.us/scriptaculous/show/Ajax.InPlaceEditor

// Use this if you notice weird scrolling problems on some browsers,
// the DOM might be a bit confused when this gets called so do this
// waits 1 ms (with setTimeout) until it does the activation
Field.scrollFreeActivate = function(field) {
  setTimeout(function() {
    Field.activate(field);
  }, 1);
}

Ajax.InPlaceEditor = Class.create();
Ajax.InPlaceEditor.defaultHighlightColor = "#FFFF99";
Ajax.InPlaceEditor.prototype = {
  initialize: function(element, url, options) {
    this.url = url;
    this.element = $(element);

    this.options = Object.extend({
      okText: "ok",
      cancelText: "cancel",
      savingText: "Saving...",
      clickToEditText: "Click to edit",
      okText: "ok",
      rows: 1,
      onComplete: function(transport, element) {
        new Effect.Highlight(element, {startcolor: this.options.highlightcolor});
      },
      onFailure: function(transport) {
        alert("Error communicating with the server: " + transport.responseText.stripTags());
      },
      callback: function(form) {
        return Form.serialize(form);
      },
      handleLineBreaks: true,
      loadingText: 'Loading...',
      savingClassName: 'inplaceeditor-saving',
      loadingClassName: 'inplaceeditor-loading',
      formClassName: 'inplaceeditor-form',
      highlightcolor: Ajax.InPlaceEditor.defaultHighlightColor,
      highlightendcolor: "#FFFFFF",
      externalControl:	null,
      ajaxOptions: {}
    }, options || {});

    if(!this.options.formId && this.element.id) {
      this.options.formId = this.element.id + "-inplaceeditor";
      if ($(this.options.formId)) {
        // there's already a form with that name, don't specify an id
        this.options.formId = null;
      }
    }
    
    if (this.options.externalControl) {
      this.options.externalControl = $(this.options.externalControl);
    }
    
    this.originalBackground = Element.getStyle(this.element, 'background-color');
    if (!this.originalBackground) {
      this.originalBackground = "transparent";
    }
    
    this.element.title = this.options.clickToEditText;
    
    this.onclickListener = this.enterEditMode.bindAsEventListener(this);
    this.mouseoverListener = this.enterHover.bindAsEventListener(this);
    this.mouseoutListener = this.leaveHover.bindAsEventListener(this);
    Event.observe(this.element, 'click', this.onclickListener);
    Event.observe(this.element, 'mouseover', this.mouseoverListener);
    Event.observe(this.element, 'mouseout', this.mouseoutListener);
    if (this.options.externalControl) {
      Event.observe(this.options.externalControl, 'click', this.onclickListener);
      Event.observe(this.options.externalControl, 'mouseover', this.mouseoverListener);
      Event.observe(this.options.externalControl, 'mouseout', this.mouseoutListener);
    }
  },
  enterEditMode: function(evt) {
    if (this.saving) return;
    if (this.editing) return;
    this.editing = true;
    this.onEnterEditMode();
    if (this.options.externalControl) {
      Element.hide(this.options.externalControl);
    }
    Element.hide(this.element);
    this.createForm();
    this.element.parentNode.insertBefore(this.form, this.element);
    Field.scrollFreeActivate(this.editField);
    // stop the event to avoid a page refresh in Safari
    if (evt) {
      Event.stop(evt);
    }
    return false;
  },
  createForm: function() {
    this.form = document.createElement("form");
    this.form.id = this.options.formId;
    Element.addClassName(this.form, this.options.formClassName)
    this.form.onsubmit = this.onSubmit.bind(this);

    this.createEditField();

    if (this.options.textarea) {
      var br = document.createElement("br");
      this.form.appendChild(br);
    }

    okButton = document.createElement("input");
    okButton.type = "submit";
    okButton.value = this.options.okText;
    this.form.appendChild(okButton);

    cancelLink = document.createElement("a");
    cancelLink.href = "#";
    cancelLink.appendChild(document.createTextNode(this.options.cancelText));
    cancelLink.onclick = this.onclickCancel.bind(this);
    this.form.appendChild(cancelLink);
  },
  hasHTMLLineBreaks: function(string) {
    if (!this.options.handleLineBreaks) return false;
    return string.match(/<br/i) || string.match(/<p>/i);
  },
  convertHTMLLineBreaks: function(string) {
    return string.replace(/<br>/gi, "\n").replace(/<br\/>/gi, "\n").replace(/<\/p>/gi, "\n").replace(/<p>/gi, "");
  },
  createEditField: function() {
    var text;
    if(this.options.loadTextURL) {
      text = this.options.loadingText;
    } else {
      text = this.getText();
    }
    
    if (this.options.rows == 1 && !this.hasHTMLLineBreaks(text)) {
      this.options.textarea = false;
      var textField = document.createElement("input");
      textField.type = "text";
      textField.name = "value";
      textField.value = text;
      textField.style.backgroundColor = this.options.highlightcolor;
      var size = this.options.size || this.options.cols || 0;
      if (size != 0) textField.size = size;
      this.editField = textField;
    } else {
      this.options.textarea = true;
      var textArea = document.createElement("textarea");
      textArea.name = "value";
      textArea.value = this.convertHTMLLineBreaks(text);
      textArea.rows = this.options.rows;
      textArea.cols = this.options.cols || 40;
      this.editField = textArea;
    }
    
    if(this.options.loadTextURL) {
      this.loadExternalText();
    }
    this.form.appendChild(this.editField);
  },
  getText: function() {
    return this.element.innerHTML;
  },
  loadExternalText: function() {
    Element.addClassName(this.form, this.options.loadingClassName);
    this.editField.disabled = true;
    new Ajax.Request(
      this.options.loadTextURL,
      Object.extend({
        asynchronous: true,
        onComplete: this.onLoadedExternalText.bind(this)
      }, this.options.ajaxOptions)
    );
  },
  onLoadedExternalText: function(transport) {
    Element.removeClassName(this.form, this.options.loadingClassName);
    this.editField.disabled = false;
    this.editField.value = transport.responseText.stripTags();
  },
  onclickCancel: function() {
    this.onComplete();
    this.leaveEditMode();
    return false;
  },
  onFailure: function(transport) {
    this.options.onFailure(transport);
    if (this.oldInnerHTML) {
      this.element.innerHTML = this.oldInnerHTML;
      this.oldInnerHTML = null;
    }
    return false;
  },
  onSubmit: function() {
    // onLoading resets these so we need to save them away for the Ajax call
    var form = this.form;
    var value = this.editField.value;
    
    // do this first, sometimes the ajax call returns before we get a chance to switch on Saving...
    // which means this will actually switch on Saving... *after* we've left edit mode causing Saving...
    // to be displayed indefinitely
    this.onLoading();
    
    new Ajax.Updater(
      { 
        success: this.element,
        failure: null
      },
      this.url,
      Object.extend({
        parameters: this.options.callback(form, value),
        onComplete: this.onComplete.bind(this),
        onFailure: this.onFailure.bind(this)
      }, this.options.ajaxOptions)
    );
    // stop the event to avoid a page refresh in Safari
    if (arguments.length > 1) {
      Event.stop(arguments[0]);
    }
    return false;
  },
  onLoading: function() {
    this.saving = true;
    this.removeForm();
    this.leaveHover();
    this.showSaving();
  },
  showSaving: function() {
    this.oldInnerHTML = this.element.innerHTML;
    this.element.innerHTML = this.options.savingText;
    Element.addClassName(this.element, this.options.savingClassName);
    this.element.style.backgroundColor = this.originalBackground;
    Element.show(this.element);
  },
  removeForm: function() {
    if(this.form) {
      if (this.form.parentNode) Element.remove(this.form);
      this.form = null;
    }
  },
  enterHover: function() {
    if (this.saving) return;
    this.element.style.backgroundColor = this.options.highlightcolor;
    if (this.effect) {
      this.effect.cancel();
    }
    Element.addClassName(this.element, this.options.hoverClassName)
  },
  leaveHover: function() {
    if (this.options.backgroundColor) {
      this.element.style.backgroundColor = this.oldBackground;
    }
    Element.removeClassName(this.element, this.options.hoverClassName)
    if (this.saving) return;
    this.effect = new Effect.Highlight(this.element, {
      startcolor: this.options.highlightcolor,
      endcolor: this.options.highlightendcolor,
      restorecolor: this.originalBackground
    });
  },
  leaveEditMode: function() {
    Element.removeClassName(this.element, this.options.savingClassName);
    this.removeForm();
    this.leaveHover();
    this.element.style.backgroundColor = this.originalBackground;
    Element.show(this.element);
    if (this.options.externalControl) {
      Element.show(this.options.externalControl);
    }
    this.editing = false;
    this.saving = false;
    this.oldInnerHTML = null;
    this.onLeaveEditMode();
  },
  onComplete: function(transport) {
    this.leaveEditMode();
    this.options.onComplete.bind(this)(transport, this.element);
  },
  onEnterEditMode: function() {},
  onLeaveEditMode: function() {},
  dispose: function() {
    if (this.oldInnerHTML) {
      this.element.innerHTML = this.oldInnerHTML;
    }
    this.leaveEditMode();
    Event.stopObserving(this.element, 'click', this.onclickListener);
    Event.stopObserving(this.element, 'mouseover', this.mouseoverListener);
    Event.stopObserving(this.element, 'mouseout', this.mouseoutListener);
    if (this.options.externalControl) {
      Event.stopObserving(this.options.externalControl, 'click', this.onclickListener);
      Event.stopObserving(this.options.externalControl, 'mouseover', this.mouseoverListener);
      Event.stopObserving(this.options.externalControl, 'mouseout', this.mouseoutListener);
    }
  }
};

// Delayed observer, like Form.Element.Observer, 
// but waits for delay after last key input
// Ideal for live-search fields

Form.Element.DelayedObserver = Class.create();
Form.Element.DelayedObserver.prototype = {
  initialize: function(element, delay, callback) {
    this.delay     = delay || 0.5;
    this.element   = $(element);
    this.callback  = callback;
    this.timer     = null;
    this.lastValue = $F(this.element); 
    Event.observe(this.element,'keyup',this.delayedListener.bindAsEventListener(this));
  },
  delayedListener: function(event) {
    if(this.lastValue == $F(this.element)) return;
    if(this.timer) clearTimeout(this.timer);
    this.timer = setTimeout(this.onTimerEvent.bind(this), this.delay * 1000);
    this.lastValue = $F(this.element);
  },
  onTimerEvent: function() {
    this.timer = null;
    this.callback(this.element, $F(this.element));
  }
};




/* From: /eprints/eprints/software/eprints-materiali-didattici/lib/static/javascript/auto/30_scriptaculous_05_slider.js */

// Copyright (c) 2005 Marty Haught, Thomas Fuchs 
//
// See http://script.aculo.us for more info
// 
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

if(!Control) var Control = {};
Control.Slider = Class.create();

// options:
//  axis: 'vertical', or 'horizontal' (default)
//
// callbacks:
//  onChange(value)
//  onSlide(value)
Control.Slider.prototype = {
  initialize: function(handle, track, options) {
    var slider = this;
    
    if(handle instanceof Array) {
      this.handles = handle.collect( function(e) { return $(e) });
    } else {
      this.handles = [$(handle)];
    }
    
    this.track   = $(track);
    this.options = options || {};

    this.axis      = this.options.axis || 'horizontal';
    this.increment = this.options.increment || 1;
    this.step      = parseInt(this.options.step || '1');
    this.range     = this.options.range || $R(0,1);
    
    this.value     = 0; // assure backwards compat
    this.values    = this.handles.map( function() { return 0 });
    this.spans     = this.options.spans ? this.options.spans.map(function(s){ return $(s) }) : false;
    this.options.startSpan = $(this.options.startSpan || null);
    this.options.endSpan   = $(this.options.endSpan || null);

    this.restricted = this.options.restricted || false;

    this.maximum   = this.options.maximum || this.range.end;
    this.minimum   = this.options.minimum || this.range.start;

    // Will be used to align the handle onto the track, if necessary
    this.alignX = parseInt(this.options.alignX || '0');
    this.alignY = parseInt(this.options.alignY || '0');
    
    this.trackLength = this.maximumOffset() - this.minimumOffset();

    this.active   = false;
    this.dragging = false;
    this.disabled = false;

    if(this.options.disabled) this.setDisabled();

    // Allowed values array
    this.allowedValues = this.options.values ? this.options.values.sortBy(Prototype.K) : false;
    if(this.allowedValues) {
      this.minimum = this.allowedValues.min();
      this.maximum = this.allowedValues.max();
    }

    this.eventMouseDown = this.startDrag.bindAsEventListener(this);
    this.eventMouseUp   = this.endDrag.bindAsEventListener(this);
    this.eventMouseMove = this.update.bindAsEventListener(this);

    // Initialize handles in reverse (make sure first handle is active)
    this.handles.each( function(h,i) {
      i = slider.handles.length-1-i;
      slider.setValue(parseFloat(
        (slider.options.sliderValue instanceof Array ? 
          slider.options.sliderValue[i] : slider.options.sliderValue) || 
         slider.range.start), i);
      Element.makePositioned(h); // fix IE
      Event.observe(h, "mousedown", slider.eventMouseDown);
    });
    
    Event.observe(this.track, "mousedown", this.eventMouseDown);
    Event.observe(document, "mouseup", this.eventMouseUp);
    Event.observe(document, "mousemove", this.eventMouseMove);
    
    this.initialized = true;
  },
  dispose: function() {
    var slider = this;    
    Event.stopObserving(this.track, "mousedown", this.eventMouseDown);
    Event.stopObserving(document, "mouseup", this.eventMouseUp);
    Event.stopObserving(document, "mousemove", this.eventMouseMove);
    this.handles.each( function(h) {
      Event.stopObserving(h, "mousedown", slider.eventMouseDown);
    });
  },
  setDisabled: function(){
    this.disabled = true;
  },
  setEnabled: function(){
    this.disabled = false;
  },  
  getNearestValue: function(value){
    if(this.allowedValues){
      if(value >= this.allowedValues.max()) return(this.allowedValues.max());
      if(value <= this.allowedValues.min()) return(this.allowedValues.min());
      
      var offset = Math.abs(this.allowedValues[0] - value);
      var newValue = this.allowedValues[0];
      this.allowedValues.each( function(v) {
        var currentOffset = Math.abs(v - value);
        if(currentOffset <= offset){
          newValue = v;
          offset = currentOffset;
        } 
      });
      return newValue;
    }
    if(value > this.range.end) return this.range.end;
    if(value < this.range.start) return this.range.start;
    return value;
  },
  setValue: function(sliderValue, handleIdx){
    if(!this.active) {
      this.activeHandle    = this.handles[handleIdx];
      this.activeHandleIdx = handleIdx;
      this.updateStyles();
    }
    handleIdx = handleIdx || this.activeHandleIdx || 0;
    if(this.initialized && this.restricted) {
      if((handleIdx>0) && (sliderValue<this.values[handleIdx-1]))
        sliderValue = this.values[handleIdx-1];
      if((handleIdx < (this.handles.length-1)) && (sliderValue>this.values[handleIdx+1]))
        sliderValue = this.values[handleIdx+1];
    }
    sliderValue = this.getNearestValue(sliderValue);
    this.values[handleIdx] = sliderValue;
    this.value = this.values[0]; // assure backwards compat
    
    this.handles[handleIdx].style[this.isVertical() ? 'top' : 'left'] = 
      this.translateToPx(sliderValue);
    
    this.drawSpans();
    if(!this.dragging || !this.event) this.updateFinished();
  },
  setValueBy: function(delta, handleIdx) {
    this.setValue(this.values[handleIdx || this.activeHandleIdx || 0] + delta, 
      handleIdx || this.activeHandleIdx || 0);
  },
  translateToPx: function(value) {
    return Math.round((this.trackLength / (this.range.end - this.range.start)) * (value - this.range.start)) + "px";
  },
  translateToValue: function(offset) {
    return ((offset/this.trackLength) * (this.range.end - this.range.start)) + this.range.start;
  },
  getRange: function(range) {
    var v = this.values.sortBy(Prototype.K); 
    range = range || 0;
    return $R(v[range],v[range+1]);
  },
  minimumOffset: function(){
    return(this.isVertical() ? this.alignY : this.alignX);
  },
  maximumOffset: function(){
    return(this.isVertical() ?
      this.track.offsetHeight - this.alignY : this.track.offsetWidth - this.alignX);
  },  
  isVertical:  function(){
    return (this.axis == 'vertical');
  },
  drawSpans: function() {
    var slider = this;
    if(this.spans)
      $R(0, this.spans.length-1).each(function(r) { slider.setSpan(slider.spans[r], slider.getRange(r)) });
    if(this.options.startSpan)
      this.setSpan(this.options.startSpan,
        $R(0, this.values.length>1 ? this.getRange(0).min() : this.value ));
    if(this.options.endSpan)
      this.setSpan(this.options.endSpan, 
        $R(this.values.length>1 ? this.getRange(this.spans.length-1).max() : this.value, this.maximum));
  },
  setSpan: function(span, range) {
    if(this.isVertical()) {
      span.style.top = this.translateToPx(range.start);
      span.style.height = this.translateToPx(range.end - range.start);
    } else {
      span.style.left = this.translateToPx(range.start);
      span.style.width = this.translateToPx(range.end - range.start);
    }
  },
  updateStyles: function() {
    this.handles.each( function(h){ Element.removeClassName(h, 'selected') });
    Element.addClassName(this.activeHandle, 'selected');
  },
  startDrag: function(event) {
    if(Event.isLeftClick(event)) {
      if(!this.disabled){
        this.active = true;
        
        var handle = Event.element(event);
        var pointer  = [Event.pointerX(event), Event.pointerY(event)];
        if(handle==this.track) {
          var offsets  = Position.cumulativeOffset(this.track); 
          this.event = event;         
          this.setValue(this.translateToValue( 
            this.isVertical() ? pointer[1]-offsets[1] : pointer[0]-offsets[0]
          ));
        } else {
          // find the handle (prevents issues with Safari)
          while((this.handles.indexOf(handle) == -1) && handle.parentNode) 
            handle = handle.parentNode;
        
          this.activeHandle    = handle;
          this.activeHandleIdx = this.handles.indexOf(this.activeHandle);
          this.updateStyles();
        
          var offsets  = Position.cumulativeOffset(this.activeHandle);
          this.offsetX = (pointer[0] - offsets[0]);
          this.offsetY = (pointer[1] - offsets[1]);
        }
      }
      Event.stop(event);
    }
  },
  update: function(event) {
   if(this.active) {
      if(!this.dragging) this.dragging = true;
      this.draw(event);
      // fix AppleWebKit rendering
      if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
      Event.stop(event);
   }
  },
  draw: function(event) {
    var pointer = [Event.pointerX(event), Event.pointerY(event)];
    var offsets = Position.cumulativeOffset(this.track);
    pointer[0] -= this.offsetX + offsets[0];
    pointer[1] -= this.offsetY + offsets[1];
    this.event = event;
    this.setValue(this.translateToValue( this.isVertical() ? pointer[1] : pointer[0] ));
    if(this.initialized && this.options.onSlide) this.options.onSlide(this.values.length>1 ? this.values : this.value, this);
  },
  endDrag: function(event) {
    if(this.active && this.dragging) {
      this.finishDrag(event, true);
      Event.stop(event);
    }
    this.active = false;
    this.dragging = false;
  },  
  finishDrag: function(event, success) {
    this.active = false;
    this.dragging = false;
    this.updateFinished();
  },
  updateFinished: function() {
    if(this.initialized && this.options.onChange) 
      this.options.onChange(this.values.length>1 ? this.values : this.value, this);
    this.event = null;
  }
}



/* From: /eprints/eprints/software/eprints-materiali-didattici/lib/static/javascript/auto/50_block_enter.js */

function EPJS_block_enter( event )
{
	var key;

	// This handles NN4.0 which retrieves
	// the keycode differently.
	if( event && event.which )
	{
		key = event.which;
	}
	else
	{
		key = event.keyCode;
	}
	return( key != 13 );
}



/* From: /eprints/eprints/software/eprints-materiali-didattici/lib/static/javascript/auto/50_blur.js */


function EPJS_blur( event )
{
	if( event )
	{
		if( event.target )
		{
			if( event.target.blur )
			{
				event.target.blur();
			}
		}
	}
}



/* From: /eprints/eprints/software/eprints-materiali-didattici/lib/static/javascript/auto/50_button_pushed.js */


var epjs_button_code = {};

function EPJS_register_button_code( buttonid, coderef )
{
	if( epjs_button_code[buttonid] == null )
	{
		epjs_button_code[buttonid] = new Array;
	}

	epjs_button_code[buttonid].push( coderef );	
}

function EPJS_button_pushed( buttonid )
{
	if( epjs_button_code[buttonid] == null )
	{
		return true;
	}

	var ok = true;
	epjs_button_code[buttonid].each( 
		function( coderef ) {
			ok = ok && coderef();
		} );
	return ok;
}

/*
EPJS_register_button_code( "_action_next", function() { alert( "test1" ); return true; } );
EPJS_register_button_code( "_action_next", function() { return confirm( "check" ); } );
*/



/* From: /eprints/eprints/software/eprints-materiali-didattici/lib/static/javascript/auto/50_enter_click.js */

function EPJS_enter_click( event, buttonid )
{
	var key;

	// This handles NN4.0 which retrieves
	// the keycode differently.
	if( event && event.which )
	{
		key = event.which;
	}
	else
	{
		key = event.keyCode;
	}

	if( key == 13 )
	{
		$(buttonid).click();
	}
	return( key != 13 );
}



/* From: /eprints/eprints/software/eprints-materiali-didattici/lib/static/javascript/auto/50_preview.js */


function EPJS_ShowPreview( e, preview_id ) 
{
	var box_w = 410;
	var box_h = 330;

 	var y = (document.documentElement.scrollTop || document.body.scrollTop);
	var screen_h = window.innerHeight ? window.innerHeight : 
			 (document.documentElement.clientHeight ? document.documentElement.clientHeight : document.body.clientHeight);
 	var x = (document.documentElement.scrollLeft || document.body.scrollLeft);
	var screen_w = window.innerWidth ? window.innerWidth : 
			 (document.documentElement.clientWidth ? document.documentElement.clientWidth : document.body.clientWidth);

	var box = $(preview_id);

	box.style.display = 'block';
	box.style.top = y+(screen_h/2)-(box_h/2)+"px";
	var midscreen = x+(screen_w/2);
	var x_cent;
	var x_pointer = Event.pointerX(e);
	if( x_pointer < midscreen )
	{
		box.style.left = midscreen +screen_w/4 - box_w/2+"px";
	}
	else
	{
		box.style.left = midscreen -screen_w/4 - box_w/2+"px";
	}
}

function EPJS_HidePreview( e, preview_id )
{
	$(preview_id).style.display = 'none';
}
	



/* From: /eprints/eprints/software/eprints-materiali-didattici/lib/static/javascript/auto/50_scrollfix.js */


/* sneaky little thing which forces the scroll bar to always appear, solving javascript 
   jitters.
*/

window.document.write( '<style>body { height: '+(window.innerHeight+1)+'px; }</style>' );



/* From: /eprints/eprints/software/eprints-materiali-didattici/lib/static/javascript/auto/50_tabs.js */



window.ep_showTab = function( baseid, tabid )
{

	panels = document.getElementById( baseid+"_panels" );
	for( i=0; i<panels.childNodes.length; i++ )
	{
		child = panels.childNodes[i];
		if( child.style ) { child.style.display = "none"; }
	}

	tabs = document.getElementById( baseid+"_tabs" );
	for( i=0; i<tabs.childNodes.length; i++ )
	{
		child = tabs.childNodes[i];
		if( child.className == "ep_tab_selected" )
		{
			child.className = "ep_tab";
		}
	}

	panel = document.getElementById( baseid+"_panel_"+tabid );

	panel.style.display = "block";

	tab = document.getElementById( baseid+"_tab_"+tabid );
	tab.style.font_size = "30px";
	tab.className = "ep_tab_selected";
	anchors = tab.getElementsByTagName('a');
	for( i=0; i<anchors.length; i++ )
	{
		anchors[i].blur();
	}

	return false;
};




/* From: /eprints/eprints/software/eprints-materiali-didattici/lib/static/javascript/auto/50_toggle.js */


function EPJS_toggleSlide( element_id, start_visible )
{
	return EPJS_toggleSlide_aux( element_id, start_visible, null );
}
function EPJS_toggleSlideScroll( element_id, start_visible, scroll_id )
{
	return EPJS_toggleSlide_aux( element_id, start_visible, scroll_id );
}
function EPJS_toggleSlide_aux( element_id, start_visible, scroll_id )
{
	element = $(element_id);
	current_vis = start_visible;

	if( element.style.display == "none" )
	{
		current_vis = false;
	}
	if( element.style.display == "block" )
	{
		current_vis = true;
	}


	element.style.overflow = 'hidden';
	if( current_vis )
	{
		inner = $(element_id+"_inner");
  		new Effect.Scale(element_id,
			0,
    			{ 
				scaleX: false,
				scaleContent: false,
				scaleFrom: 100,
				duration: 0.3,
				transition: Effect.Transitions.linear,
				afterFinish: function () { $(element_id).style.display = "none"; },
				scaleMode: { originalHeight: inner.offsetHeight, originalWidth: inner.offsetWidth }
			} ); 
	}
	else
	{
        	element.style.height = "0px";
		element.style.display = "block";
		inner = $(element_id+"_inner");

  		new Effect.Scale(element_id,
			100,
    			{ 
				scaleX: false,
				scaleContent: false,
				scaleFrom: 0,
				duration: 0.3,
				transition: Effect.Transitions.linear,
				scaleMode: { originalHeight: inner.offsetHeight, originalWidth: inner.offsetWidth },
				afterFinish: function () { 
					$(element_id).style.overflow = "visible"; 
					$(element_id).style.height = ""; 
				}
			} ); 
		if( scroll_id != null )
		{
			new Effect.ScrollTo(scroll_id);
		}
	}
}

function EPJS_toggle( element_id, start_visible )
{
	EPJS_toggle_type( element_id, start_visible, 'block' );
}

function EPJS_toggle_type( element_id, start_visible, display_type )
{
	element = $(element_id);

	current_vis = start_visible;

	if( element.style.display == "none" )
	{
		current_vis = false;
	}
	if( element.style.display == display_type )
	{
		current_vis = true;
	}
	
	if( current_vis )
	{
		element.style.display = "none";
	}
	else
	{
		element.style.display = display_type;
	}

}



/* From: /eprints/eprints/software/eprints-materiali-didattici/lib/static/javascript/auto/70_autocomplete.js */




function ep_autocompleter( element, target, url, basenames, width_of_these, fields_to_send, extra_params )
{
  new Ajax.Autocompleter( element, target, url, {
    callback: function( el, entry ) { 
      var params = fields_to_send.inject( entry, function( acc, rel_id, index ) { 
        return acc + '&' + rel_id + '=' + $F(basenames.relative + rel_id); } );
      return params + extra_params;
    },
    paramName: 'q',
    onShow: function(element, update){
      var w = width_of_these.inject( 0, function( acc, cell, index ) { 
        return acc + Element.getDimensions(cell).width; } );
      update.style.position = 'absolute';
      Position.clone(element, update, {
        setWidth: false, 
        setHeight: false, 
        setLeft: false, 
        offsetTop: element.offsetHeight });
      update.style.width  = w + 'px';
      Effect.Appear(update,{duration:0.15});
    },
    updateElement: function( selected ) {
      var ul = $A(selected.getElementsByTagName( 'ul' )).first();
      var lis = $A(ul.getElementsByTagName( 'li' ));
      lis.each( function(li) { 
        var myid = li.getAttribute( 'id' );
        var attr = myid.split( /:/ );
        if( attr[0] != 'for' ) { alert( "Autocomplete id reference did not start with 'for': "+myid); return; }
        if( attr[1] != 'value' &&  attr[1] != 'block' ) { alert( "Autocomplete id reference did not contain 'block' or 'value': "+myid); return; }
        var id = attr[3];
        var prefix = basenames[attr[2]];
	if( prefix == null ) { prefix = ''; }
        var target = $(prefix+id);
        if( !target ) { return; }
	if( attr[1] == 'value' )
	{
		var newvalue = li.innerHTML;
		rExp = /&gt;/gi;
		newvalue = newvalue.replace(rExp, ">" );
		rExp = /&lt;/gi;
		newvalue = newvalue.replace(rExp, "<" );
		rExp = /&amp;/gi;
		newvalue = newvalue.replace(rExp, "&" );
        	target.value = newvalue;
	}
	else if( attr[1] == 'block' )
	{
		while( target.hasChildNodes() )
		{
			target.removeChild( target.firstChild );
		}
		while( li.hasChildNodes() )
		{
			target.appendChild( li.removeChild( li.firstChild ) );
		}
	}
	else
	{
		alert( "1st part of autocomplete id ref was: "+attr[1] );
	}

      } );
    }
  } );
}






/* From: /eprints/eprints/software/eprints-materiali-didattici/archives/materiali_didattici/cfg/static/javascript/auto/90_local.js */


/* 
 * This javascript file will be loaded after all the system files.
 * (so other javascript functions will already be loaded)
 * 
 * Javascript files are loaded in alphabetic order, hence the "90" 
 * in the filename to force it to load after the other files!
 * 
 * To totally replace a system js file, create a file of the same 
 * name in this directory. eg. 50_preview.js
 * 
*/





/* From: /eprints/eprints/software/eprints-materiali-didattici/archives/materiali_didattici/cfg/static/javascript/auto/95_mutuati.js */

/*

*/
function toggleMutuati(form,base,startid,stopid) {
 var i,check_name,master;
 check_name=base +"_"+ (startid-1) +"_codice_insegnamento";
 master=form[check_name].checked;
 for ( i=startid; i<=stopid; i++) {
   check_name=base +"_"+ i +"_codice_insegnamento";
   form[check_name].checked= master;
 }
}



/* From: /eprints/eprints/software/eprints-materiali-didattici/archives/materiali_didattici/cfg/static/javascript/auto/96_cambio_anno_accademico.js */

/*
 cambioAnnoAccademico: Usata quando si cambia anno accademico
  Serve per confermare il cambio e per far notare al docente
  che in tal modo verranno azzerati gli insegnamenti che 
  dovranno poi essere selezionati per il nuovo anno.
  Se non si conferma l'azione del cambio anno allora verra'
  riselezionato l'anno accademico selezionato al momento
  del caricamento della pagina.

  variabili in in:
    obj: e' l'oggetto del pop-up (this);
    basename: e' la basename dei nomi dei checkbox prima del numero
              il nome del checkbox e' basename + numero + '_codice_insegnamento'
              dove numero e' da 1 a n con n= num di insegnamenti
    messaggio: messaggio che deve comparire
*/
var anno_corrente=0;
function cambioAnnoAccademico(obj,basename,messaggio) {
 var i;
 if ( window.confirm(messaggio) ) { 
  i=1;
  // INIZIO: azzeramento degli insegnamenti
  while (obj.form[basename+i+'_codice_insegnamento']) { 
   if ( obj.form[basename+i+'_codice_insegnamento'].length ) {
    obj.form[basename+i+'_codice_insegnamento'][0].checked=false;
   }
   else {
    obj.form[basename+i+'_codice_insegnamento'].checked=false;
   }
   i++;  
  }; 
  // FINE: azzeramento degli insegnamenti
  //obj.form['_action_next'].click(); 
  var anno=obj.options[obj.selectedIndex].value;
  $(basename+"content").innerHTML='<div><img src="/images/roller.gif" />&nbsp;Caricamento insegnamenti A.A. '+anno+'/'+(parseInt(anno) +1)+' in corso attendere ...</div>';
  var params="year="+obj.options[obj.selectedIndex].value+"&basename="+basename+"&sep="+encodeURIComponent("||")+"&noform=1";
  new Ajax.Request('/cgi/users/lookup/get_insegnamenti',
                     {method: 'post',
                      parameters: params,
                      onSuccess: function(transport) {
                                  var r=transport.responseText;
                                  // baco di IE sui form (vedi http://domscripting.com/blog/display/99)
                                  var newdiv = document.createElement("div");
                                  newdiv.innerHTML = r;
                                  $(basename+"content").innerHTML='';
                                  $(basename+"content").appendChild(newdiv);
                                  $(basename+"content").style.display="block";
                                  anno_corrente=anno;
                                 },
                      onFailure: function() {
                                  alert('impossibile recuperare gli insegnamenti');
                                  for (i=0; i <obj.length; i++) { 
                                    if (obj.options[i].defaultSelected) { 
                                      obj.options[i].selected=true; 
                                    } 
                                  } 
                                  $(basename+"content").innerHTML='Errore caricamento insegnamenti A.A. '+anno+'/'+(parseInt(anno) +1) 
                                 }
                     }
                  );
 } 
 else { 
  // se il comando no e' confermato assegno il valore di default dell'anno accademico
  if (anno_corrente != 0) {
   for (i=0; i <obj.length; i++) {
    if (obj.options[i].value == anno_corrente) {
      obj.options[i].selected=true;
    }
   }
  }
  else {
   for (i=0; i <obj.length; i++) { 
    if (obj.options[i].defaultSelected) { 
     obj.options[i].selected=true; 
    } 
   } 
  }
  return false;
 }
}



/* From: /eprints/eprints/software/eprints-materiali-didattici/archives/materiali_didattici/cfg/static/javascript/auto/97_login_auto_unibo.it.js */

/*
 Function    : login_auto_unibo_it
 Descrizione:
  Aggiunge il dominio '@unibo.it' se non e' stato
  inserito nessun dominio nel momento del submit della form
  di login
*/

function login_auto_unibo_it(form) {
 if (form.login_username.value != null && form.login_username.value.indexOf('@') == -1) {
  form.login_username.value +='@unibo.it';
 }
 return 1;
}



/* From: /eprints/eprints/software/eprints-materiali-didattici/archives/materiali_didattici/cfg/static/javascript/auto/98_access_level.js */

/*
 array access_levels_access_distribution_list_inputs:
 lo uso per salvarmi il riferimento all'elemento input type="radio"
 con id che finisce per "_security_list" in modo da poterlo
 utilizzare come variabile globale in access_level_onclick_event()
 lanciabile da un evento onclick su un tasto "radio" 
*/
var access_levels_access_distribution_list_inputs = Array();
/*
 function access_level_onclick_event:
  funzione lanciata al click di un tasto "radio"  nella selezione
  del livello di accesso durante il deposito di un materiale.
  l'oggetto this corrisponde al "radio".
  Scopo: abilita/disabilita la casella per l'inserimento del nome
    della lista di discussione in base al livello scelto.
*/
function access_level_onclick_event() {
  var match=this.getAttribute('id').match(/^(id\d+_doc\d+)_security/);
  var id=match[1];
  if (this.getAttribute('id').indexOf("_security_list") == -1) {
    if (this.checked) {
      access_levels_access_distribution_list_inputs[id].disabled=true;
    }
    else {
      access_levels_access_distribution_list_inputs[id].disabled=false;
    }
  }
  else {
    if (this.checked) {
      access_levels_access_distribution_list_inputs[id].disabled=false;
    }
    else {
      access_levels_access_distribution_list_inputs[id].disabled=true;
    }
  }
}

/*
 function init_access_level_watch:
   Viene eseguita una volta al caricamento del documento.
   Cosa fa:
    1- Si costruisce i vettori con gli elementi <input type="radio">
     relativi ai livelli di accesso ed al nome della lista di discussione
    2- Disabilita il campo di testo della lista di discussione se il
     livello non e' quello relativo alla lista;
    3- Abilita l'evento 'click' su ogni possibile scelta di livello con
     la funzione access_level_onclick_event()
*/
function init_access_level_watch() {
  var i,attr;
  var access_levels = Array();
  var access_distribution_list=Array();
  var access_levels_public=Array();
  var access_levels_studentsonly=Array();
  var access_levels_campus=Array();
  var all_inputs= document.getElementsByTagName("input");
  var all_select= document.getElementsByTagName("select");
  for (i=0; i< all_inputs.length; i++) {
    attr=all_inputs[i].getAttribute('id');
    if (attr && attr.indexOf("_security_list") != -1) {
      access_levels.push(all_inputs[i]);
    }
    else if (attr && attr.indexOf("_security_public") != -1) {
      access_levels_public.push(all_inputs[i]);
    }
    else if (attr && attr.indexOf("_security_studentsonly") != -1) {
      access_levels_studentsonly.push(all_inputs[i]);
    }
    else if (attr && attr.indexOf("_security_campus") != -1) {
      access_levels_campus.push(all_inputs[i]);
    }
    else if (attr && attr.indexOf("_distribution_list") != -1) {
      access_distribution_list.push(all_inputs[i]);
    }
  }
  for (i=0; i< all_select.length; i++) {
    attr=all_select[i].getAttribute('id');
    if (attr && attr.indexOf("_distribution_list") != -1) {
      access_distribution_list.push(all_select[i]);
    }
  }
  for (i = 0; i < access_levels.length; ++i) {
    if (! access_levels[i].checked) {
      access_distribution_list[i].disabled=true;
    }
    var match=access_levels[i].getAttribute('id').match(/^(.+)_security_list$/);
    var id=match[1];
    access_levels_access_distribution_list_inputs[id] = access_distribution_list[i];
    Event.observe(access_levels[i],'click',(access_level_onclick_event).bindAsEventListener(access_levels[i]))
    Event.observe(access_levels_public[i],'click',(access_level_onclick_event).bindAsEventListener(access_levels_public[i]))
    Event.observe(access_levels_studentsonly[i],'click',(access_level_onclick_event).bindAsEventListener(access_levels_studentsonly[i]))
    Event.observe(access_levels_campus[i],'click',(access_level_onclick_event).bindAsEventListener(access_levels_campus[i]))
  }
}
// Aggiungo in coda un gestore dell'evento 'load' del documento tramite la funzione init_access_level_watch()
Event.observe(window,'load', function () { init_access_level_watch(); });



/* From: /eprints/eprints/software/eprints-materiali-didattici/archives/materiali_didattici/cfg/static/javascript/auto/98_copia_anno_succesivo.js */

/* 
  ===  ================================================================ ====
  ==== INIZIO FUNZIONI PER LA COPIA DEI DOCUMENTI PER L'ANNO SUCCESSIVO ====
  ====        VALIDO PER LA PARTE GESTIONALE DEI DOCUMENTI              ====
  ===  ================================================================ ====
*/

/*
 function initAccessCopyOnNextYearWatch():
   Viene eseguita una volta al caricamento di ogni documento.
   Descrizione:
    1- Controlla se la pagina e' /cgi/users/home e lo screen e' quello iniziale
        ovvero non esiste il parametro screen= oppure screen=Items
       In caso la pagina non sia quella giusta non fa nulla
    2- controlla se esiste il DIV con className='ep_search_results' altrimenti esce.
    3- ricava l'anno accademico corrente dalla tendina "Anno accademico" visibile
        se si clicca in "Altri criteri di selezione".
        L'anno corrente e' l'ultima opzione nella lista.
    4- Controllo nella tabella dei documenti (td con className="ep_columns_cell_first")
         se ci sono documenti di anni precedenti.
       Se i documenti sono tutti dell'anno corrente esce
    5- Aggiunge il tasto "Copia anno successivo" al centro e sopra la tabella dei
        documenti. Tale tasti gestisce l'evento 'onclick' tramite la funzione
        copyOnNextYearStep1
*/
function initAccessCopyOnNextYearWatch() {
  var i,attr,td_next,must_go_on,div_search_result,sel_anno,annoCorrente;
  var div,a_href,text;
  if (location.protocol.indexOf("https") == -1) { return; }
  if (location.pathname.indexOf("/cgi/users/home") == -1) { return; }
  if (location.search.indexOf("screen=") != -1) {
    if (location.search.indexOf("screen=Items") == -1) { return; }
  }
  var all_div=document.getElementsByTagName("div");
  var all_select=document.getElementsByTagName("select");
  var all_td=document.getElementsByTagName("td");
  div_search_result=false;
  for (i=0; i< all_div.length; i++) {
    if (all_div[i].className == 'ep_search_results') {
      div_search_result=all_div[i];
      break;
    }
  }
  if (! div_search_result) { return; }
  // ricavo l'anno accademico corrente
  for (i=0; i< all_select.length; i++) {
    if (all_select[i].getAttribute('name') == 'annoAccademico') {
      sel_anno=all_select[i];
      annoCorrente=parseInt(sel_anno.options[sel_anno.options.length -1].value);
      break;
    }
  }
  // controllo se ci sono documenti di anni precedenti
  // altrimenti non proseguo
  must_go_on=false;
  for (i=0; i< all_td.length; i++) {
    attr=all_td[i].className;
    if (attr && attr.indexOf("ep_columns_cell_first") != -1) {
      td_next=all_td[i].nextSibling;
      if (td_next.nextSibling.innerHTML.indexOf(annoCorrente+"/") == -1) {
        must_go_on=true;
        break;
      }
    }
  }
  if (! must_go_on) {return;}
  div=document.createElement("div");
  div.setAttribute("id","copy_on_next_year");
  div.style.marginBottom="1em";
  div.style.textAlign="center";
  a_href=document.createElement("p");
  a_href.setAttribute("id","copy_on_next_year_href");
  a_href.setAttribute("title",'copia materiali didattici per l\'a.a. '+annoCorrente+'/'+(annoCorrente+1));
  Event.observe(a_href,'click',copyOnNextYearStep1);
  a_href.style.cursor="pointer";
  a_href.style.textAlign="center";
  a_href.style.textDecoration="underline";
  text=document.createTextNode("Copia anno successivo");
  a_href.appendChild(text);
  div.appendChild(a_href);
  div_search_result.insertBefore(div,div_search_result.firstChild);
}

/*
 function copyOnNextYearStep1:
  Descrizione:
    Crea la maschera web della procedura guidata:
     - nasconde i blocchi non necessari per la procedura;
     - aggiunge della grafica per rendere la pagina piu' semplice
        nell'utilizzo e nella navigazione;
     - aggiunge tutti i blocchi necessari per la navigazione in modalita'
         nascosta;
     - aggiunge una colonna a destra alla tabella dei documenti per permettere
        di selezionarli;
     - solo i documenti di anni precedenti sono selezionabili
     - Aggiunge alcuni effetti grafici per far capire con immediatezza la procedura
        che si dovra' fare.
     - richiama in fine la procedura di gestione dello step1 copyOnNextYearNextStep1()
*/
function copyOnNextYearStep1() {
  var i,j,attr,el,par,par_top,div,div_search_result,img,sel_anno,annoCorrente,text,span,content_div,tr,td,td_next,a_href,eprintid,td_el,input,td_left;
  if (location.protocol.indexOf("https") == -1) { return; }
  if (location.pathname.indexOf("/cgi/users/home") == -1) { return; }
  if (location.search.indexOf("screen=") != -1) {
    if (location.search.indexOf("screen=Items") == -1) { return; }
  }
  var all_td=document.getElementsByTagName("td");
  var all_th=document.getElementsByTagName("th");
  var all_select=document.getElementsByTagName("select");
  var all_div=document.getElementsByTagName("div");
  var all_h1=document.getElementsByTagName("h1");
  // Nascondo un po' di blocchi
  for (i=0; i< all_div.length; i++) {
    if (all_div[i].className == 'ep_search_results') {
      div_search_result=all_div[i];
    }
    if (all_div[i].className == 'ep_act_bar') {
      all_div[i].style.display="none";
    }
    if (all_div[i].className == 'ep_items_filters') {
      all_div[i].style.display="none";
    }
    if (all_div[i].className == 'ep_search_controls') {
      all_div[i].style.display="none";
    }
    if (all_div[i].className == 'ep_search_controls_bottom') {
      all_div[i].style.display="none";
    }
  }
  // Nascondo il titolo della pagina e la nota informativa
  for (i=0; i< all_h1.length; i++) {
    if (all_h1[i].className == 'ep_tm_pagetitle') {
      el=all_h1[i];
      while (el.tagName != 'DIV' && el.nextSibling) {
        el=el.nextSibling;
      }
      el.style.display="none";
    }
    all_h1[i].style.display="none";
  }
  div_search_result.style.border="8px solid #d3d3d3";
  div_search_result.style.backgroundColor="#f3f4fa";
  div_search_result.style.padding="1em";
  div_search_result.style.paddingTop="0em";
  div_search_result.style.paddingRight="0em";
  for (i=0; i< all_select.length; i++) {
    if (all_select[i].getAttribute('name') == 'annoAccademico') {
      sel_anno=all_select[i];
      annoCorrente=parseInt(sel_anno.options[sel_anno.options.length -1].value);
      break;
    }
  }
  // paragrafo 'chiudi'
  par=document.createElement("p");
  par.setAttribute("id","next_year_close");
  par.style.textAlign="right";
  par.style.fontSize="0.8em";
  par.style.margin="0em";
  //par.style.padding="0em";
/*
  par.style.border="0px hidden #d3d3d3";
*/
  par.style.textDecoration="underline";
  par.style.cursor="pointer";
  Event.observe(par,'click',function() {location.reload()});
  text=document.createTextNode("chiudi");
  par.appendChild(text);
  div_search_result.insertBefore(par,div_search_result.firstChild);
  // paragrafo 'Ricarica insegnamenti' 'Avanti' 'Indietro' 'Duplica e pubblica' 'Duplica in area lavoro'
  par=document.createElement("p");
  par.setAttribute("id","next_year_next");
  par.style.textAlign="right";
  par.style.fontSize="1.5em";
  par.style.margin="0em";
  par.style.marginRight="1em";
  par.style.marginTop="1em";
  par.style.padding="0em";
  par_top=document.createElement("p");
  par_top.setAttribute("id","next_year_next");
  par_top.style.textAlign="right";
  par_top.style.fontSize="1.5em";
  par_top.style.margin="0em";
  par_top.style.marginBottom="1em";
  par_top.style.marginRight="1em";
  par_top.style.marginTop="1em";
  par_top.style.padding="0em";
/*
  par.style.border="0px hidden #d3d3d3";
*/
  // 'Ricarica insegnamenti'
  span=document.createElement("span");
  span.setAttribute('id','copy_on_next_year_reload');
  span.style.cursor="pointer";
  span.style.textDecoration="underline";
  span.style.fontSize="0.7em";
  span.style.display="none";
  text=document.createTextNode("Ricarica insegnamenti");
  span.appendChild(text);
  par.appendChild(span);
  par.appendChild(document.createTextNode(String.fromCharCode(160,160)));
  // 'Indietro'
  span=document.createElement("span");
  span.setAttribute('id','copy_on_next_year_prev_button');
  span.style.cursor="pointer";
  span.style.textDecoration="underline";
  span.style.display="none";
  text=document.createTextNode("Indietro");
  span.appendChild(text);
  par.appendChild(span);
  par.appendChild(document.createTextNode(String.fromCharCode(160,160)));
  // 'Indietro'
  span=document.createElement("span");
  span.setAttribute('id','copy_on_next_year_prev_button');
  span.style.cursor="pointer";
  span.style.textDecoration="underline";
  span.style.display="none";
  text=document.createTextNode("Indietro");
  span.appendChild(text);
  par.appendChild(span);
  par.appendChild(document.createTextNode(String.fromCharCode(160,160)));
  // 'Avanti'
  span=document.createElement("span");
  span.setAttribute('id','copy_on_next_year_next_button');
  span.style.cursor="pointer";
  span.style.textDecoration="underline";
  span.style.display="none";
  text=document.createTextNode("Avanti");
  span.appendChild(text);
  par.appendChild(span);
  par.appendChild(document.createTextNode(String.fromCharCode(160,160)));
  // 'Avanti in alto'
  span=document.createElement("span");
  span.setAttribute('id','copy_on_next_year_next_button_top');
  span.style.cursor="pointer";
  span.style.textDecoration="underline";
  span.style.display="none";
  text=document.createTextNode("Avanti");
  span.appendChild(text);
  par_top.appendChild(span);
  par_top.appendChild(document.createTextNode(String.fromCharCode(160,160)));
  // 'Duplica e pubblica'
  span=document.createElement("span");
  span.setAttribute('id','copy_on_next_year_dup1_button');
  span.style.cursor="pointer";
  span.style.textDecoration="underline";
  span.style.display="none";
  text=document.createTextNode("Duplica e pubblica");
  span.appendChild(text);
  par.appendChild(span);
  par.appendChild(document.createTextNode(String.fromCharCode(160,160)));
  div_search_result.appendChild(par);
  // 'Duplica in area lavoro'
  span=document.createElement("span");
  span.setAttribute('id','copy_on_next_year_dup2_button');
  span.style.cursor="pointer";
  span.style.textDecoration="underline";
  span.style.display="none";
  text=document.createTextNode("Duplica in area lavoro");
  span.appendChild(text);
  par.appendChild(span);
  div_search_result.appendChild(par);
  div_search_result.insertBefore(par_top,div_search_result.firstChild.nextSibling);
  // fine tasti
  Event.observe($('copy_on_next_year_reload'),'click',function() {copyOnNextYearNextStep2(annoCorrente,true)});
  Event.observe($('copy_on_next_year_prev_button'),'click',function() {copyOnNextYearNextStep1(annoCorrente)});
  Event.observe($('copy_on_next_year_next_button'),'click',function() {copyOnNextYearNextStep2(annoCorrente)});
  Event.observe($('copy_on_next_year_next_button_top'),'click',function() {copyOnNextYearNextStep2(annoCorrente)});
  Event.observe($('copy_on_next_year_dup1_button'),'click',function() {copyOnNextYearNextStep3(annoCorrente,true)});
  Event.observe($('copy_on_next_year_dup2_button'),'click',function() {copyOnNextYearNextStep3(annoCorrente,false)});
  // div Caricamento insegnamenti in corso ...
  div=document.createElement('div');
  div.setAttribute('id','copy_on_next_year_loading');
  div.setAttribute('align','center');
  div.style.display="none";
  div.style.verticalAlign="middle";
  img=document.createElement('img');
  img.setAttribute('src','/images/roller_cyan.gif');
  img.setAttribute('border','0');
  img.setAttribute('alt','attendere');
  img.setAttribute('title','attendere');
  text=document.createTextNode("Caricamento insegnamenti in corso ...");
  div.appendChild(img);
  div.appendChild(text);
  div_search_result.insertBefore(div,div_search_result.firstChild.nextSibling);
  // div Duplicazione in corso ...
  div=document.createElement('div');
  div.setAttribute('id','copy_on_next_year_duplicate');
  div.setAttribute('align','center');
  div.style.display="none";
  div.style.verticalAlign="middle";
  img=document.createElement('img');
  img.setAttribute('src','/images/roller_cyan.gif');
  img.setAttribute('border','0');
  img.setAttribute('alt','attendere');
  img.setAttribute('title','attendere');
  text=document.createTextNode("Duplicazione in corso ... attendere prego ... Attenzione, questa operazione potrebbe richiedere qualche minuto ...");
  div.appendChild(img);
  div.appendChild(text);
  div_search_result.insertBefore(div,div_search_result.firstChild.nextSibling);
  // div insegnamenti
  div=document.createElement('div');
  div.setAttribute('id','copy_on_next_year_insegnamenti');
  div.style.marginLeft="10%";
  div.style.marginRight="10%";
  div.style.display="none";
  div_search_result.insertBefore(div,div_search_result.firstChild.nextSibling);
  // div risposta finale
  div=document.createElement('div');
  div.setAttribute('id','copy_on_next_year_response');
  div.setAttribute('align','center');
  div.style.marginLeft="10%";
  div.style.marginRight="10%";
  div.style.display="none";
  div_search_result.insertBefore(div,div_search_result.firstChild.nextSibling);
  // paragrafo descrizione operazione step 1
  div=document.createElement("div");
  div.className='ep_msg_message';
  div.setAttribute("id","next_year_description_step1");
  div.style.marginLeft="10%";
  div.style.marginRight="10%";
  div.style.display="none";
  content_div=document.createElement("div");
  content_div.className='ep_msg_message_content';
  content_div.style.padding="1em";
  text='La procedura consente di copiare gruppi di materiali didattici di a.a. precedenti per l\'a.a. in corso associandoli agli stessi insegnamenti. Basta selezionare i materiali da duplicare (massimo 10 per volta) e cliccare sul bottone "Avanti" per associarli agli insegnamenti dell\'anno accademico corrente. Se non visualizzate i materiali desiderati dovete tornare nella vostra area di lavoro "<span style="text-decoration:underline">Gestisci i tuoi documenti</span>" e filtrarli tramite "<span style="text-decoration:underline">Altri criteri di selezione</span>".';
  //text=document.createTextNode("Questa procedura guidata permette di copiare i documenti di anni precedenti nell'anno attuale. Bisogna selezionare i documenti che hanno gli stessi insegnamenti nell'anno corrente e successivamente cliccare nel tasto in basso a destra 'Avanti' per poter associare gli insegnamenti ai documenti.");
  //content_div.appendChild(text);
  content_div.innerHTML=text;
  div.appendChild(content_div);
  div_search_result.insertBefore(div,div_search_result.firstChild.nextSibling);
  // paragrafo descrizione operazione step 2
  div=document.createElement("div");
  div.className='ep_msg_message';
  div.setAttribute("id","next_year_description_step2");
  div.style.marginLeft="10%";
  div.style.marginRight="10%";
  div.style.display="none";
  content_div=document.createElement("div");
  content_div.className='ep_msg_message_content';
  content_div.style.padding="1em";
  text='Selezionare gli insegnamenti da associare ai documenti, poi cliccare su uno dei tasti \'Duplica\' per copiarli. Tutti i materiali didattici copiati risulteranno associati agli insegnamenti selezionati.<br/>';
  text+='Se non sono visualizzati correttamente gli insegnamenti dell\'a.a. corrente cliccare su <span style="text-decoration:underline">Ricarica insegnamenti</span>'
  content_div.innerHTML=text;
  //text=document.createTextNode("Selezionare gli insegnamenti da associare ai documenti, poi cliccare su uno dei tasti 'Duplica' per copiarli");
  //content_div.appendChild(text);
  div.appendChild(content_div);
  div_search_result.insertBefore(div,div_search_result.firstChild.nextSibling);
  // paragrafo del titolo
  par=document.createElement("p");
  par.setAttribute("id","next_year_title");
  par.style.textAlign="center";
  par.style.fontWeight="bold";
  par.style.fontSize="1.5em";
  text=document.createTextNode("Procedura guidata per la copia documenti anno accademico "+ annoCorrente + "/" + (annoCorrente + 1));
  par.appendChild(text);
  div_search_result.insertBefore(par,div_search_result.firstChild.nextSibling);
  // INIZIO: Aggiungo l'ultima colonna di header della tabella principale
  for (i=0; i< all_th.length; i++) {
    attr=all_th[i].className;
    if (attr && attr.indexOf("ep_columns_title_last") != -1) {
      all_th[i].className='ep_columns_title';
      tr=all_th[i].parentNode;
      tr.parentNode.setAttribute('id','copy_on_next_year_main_table');
      td=document.createElement('th');
      td.className='ep_columns_title ep_columns_title_last';
      td.setAttribute('title','seleziona tutti');
      td.style.textAlign="center";
      td.style.cursor="pointer";
      td.style.textDecoration="underline";
      text=document.createTextNode("x");
      td.appendChild(text);
      Event.observe(td,'click',function() {copyOnNextYearSelectAll()});
      tr.appendChild(td);
      break;
    }
  }
  $('copy_on_next_year_main_table').style.marginRight="1em";
  // FINE: Aggiungo l'ultima colonna di header della tabella principale
  // INIZIO: Aggiungo la colonna per i check degli insegnamenti
  j=-1;
  for (i=0; i< all_td.length; i++) {
    attr=all_td[i].className;
    if (attr && attr.indexOf("ep_columns_cell_first") != -1) {
      j++;
      tr=all_td[i].parentNode;
      td_next=all_td[i].nextSibling;
      a_href=td_next.firstChild;
      href=a_href.getAttribute('href');
      eprintid=href.match(/eprintid=(\d+)/);
      td_el=document.createElement("td");
      td_el.style.backgroundColor="#d3d3d3";
      td_el.style.borderBottom="1px solid #888888";
      td_el.style.borderLeft="1px dashed #cccccc";
      input=document.createElement("input");
      input.setAttribute('type','checkbox');
      input.setAttribute('name','sel');
      input.setAttribute('id','sel_'+j);
      input.setAttribute('value',eprintid[1]);
      if (location.search.indexOf("sel="+eprintid[1]) != -1) {
        input.setAttribute('checked','checked');
      }
      if (td_next.nextSibling.innerHTML.indexOf(annoCorrente+"/") == -1) {
        Event.observe(input,'click',function(event) {copyOnNextYearCheckboxOnclickEvent(event)});
      }
      else {
        input=document.createTextNode(" ");
        j--;
        td_left=all_td[i];
        while (td_left.nextSibling) {
          new Effect.Opacity(td_left,{ from: 1.0, to: 0.5, duration: 0.5 });
          td_left=td_left.nextSibling;
        }
        new Effect.Opacity(td_left,{ from: 1.0, to: 0.5, duration: 0.5 });
        td_el.style.backgroundColor="#e1e1e1";
        Event.observe(td_el,'click',function() {copyOnNextYearCheckboxDisabledOnclick(this)});
      }
      td_el.appendChild(input);
      new Effect.Opacity(td_el,{ from: 1.0, to: 0.5, duration: 0.5 });
      tr.insertBefore(td_el,null);
      //new Effect.Pulsate($(td_el));
    }
  }
  // FINE: Aggiungo la colonna per i check degli insegnamenti
  $('copy_on_next_year').style.display="none";
  copyOnNextYearNextStep1(annoCorrente);
}

/*
 function copyOnNextYearNextStep1:
  Descrizione:
   - visualiza i tasti close, next;
   - diabilita i tasti dup1,dup2, prev,reload;
   - visualizza i blocchi description_step1, main_table(tabella dei documenti);
   - disabilita i blocchi description_step2,loading,insegnamenti.
*/

function copyOnNextYearNextStep1(year) {
  $('next_year_close').style.display="block";
  $('copy_on_next_year_next_button').style.display="inline";
  $('copy_on_next_year_next_button_top').style.display="inline";
  $('copy_on_next_year_dup1_button').style.display="none";
  $('copy_on_next_year_dup2_button').style.display="none";
  $('copy_on_next_year_prev_button').style.display="none";
  $('copy_on_next_year_reload').style.display="none";
  $('next_year_description_step1').style.display="block";
  $('next_year_description_step2').style.display="none";
  $('copy_on_next_year_main_table').style.display="block";
  $('copy_on_next_year_loading').style.display="none";
  $('copy_on_next_year_insegnamenti').style.display="none";
}

/*
 function copyOnNextYearNextStep2(year,force):
  Descrizione:
   Questa funzione e' lo step 2 della procedura guidata per la copia documenti.
   Viene attivata cliccando sul tasto con id 'copy_on_next_year_next_button'.
   Se nessun documento e' stato selezionato, viene creato un messaggio di avviso
    e esce.
   Vengono:
    - visualizzati i tasti close ed i blocchi description_step2;
    - nascosti i tasti next ed i blocchi main_table(tabella dei documenti)
    - Se gli insegnamenti sono gia stati caricati precedentemente allora vengono
      - visualizzati i tasti reload, prev e dup1 e dup2 ed i blocco insegnamenti;
      - nascosti i blocchi loading
    - altrimenti vengono
      - nascosti i tasti dup,dup2,close,prev e reload
      - visualizzato il blocco loading
      - viene fatta la chiamata asincrona per ricavare gli insegnamenti:
        - nel caso di successo vengono:
          - inseriti gli insegnamenti nel blocco insegnamenti
          - visualizzati i tasti close,reload,prev e dup1,dup2
          - nascosti i tasti next ed il blocco loading
        - nel caso di insuccesso vengono:
          - creato un alert a video;
          - nascosti i tasti next e dup1,dup2
          - visualizzati i tasti prev,reload e close
          - richiamata la funzione copyOnNextYearNextStep1(year)
  Parametri:
   year: anno corrente;
   force: indica se ricaricare forzatamente gli insegnamenti anche se sono
     gia stati caricati precedentemente
*/

function copyOnNextYearNextStep2(year,force) {
  var find_it,i,div,text,ajax;
  find_it=false;
  i=0;
  while (! find_it && $('sel_'+i)) {
    if ($('sel_'+i).checked) {
      find_it=true;
    }
    i++;
  }
  if (! find_it) {
    alert('Bisogna selezionare almeno un documento per proseguire.\n Per terminare cliccare sul tasto in alto a destra "chiudi"');
    return;
  }
  $('next_year_close').style.display="block";
  $('copy_on_next_year_next_button').style.display="none";
  $('copy_on_next_year_next_button_top').style.display="none";
  $('next_year_description_step1').style.display="none";
  $('next_year_description_step2').style.display="block";
  $('copy_on_next_year_main_table').style.display="none";
  $('copy_on_next_year_loading').style.display="block";
  $("copy_on_next_year_insegnamenti").style.display="none";
  if ( $('copy_on_next_year_insegnamenti').innerHTML && ! force) {
    $('copy_on_next_year_dup1_button').style.display="inline";
    $('copy_on_next_year_dup2_button').style.display="inline";
    $('copy_on_next_year_prev_button').style.display="inline";
    $('copy_on_next_year_reload').style.display="inline";
    $("copy_on_next_year_loading").style.display="none";
    $('copy_on_next_year_insegnamenti').style.display="block";
  }
  else {
   $('copy_on_next_year_dup1_button').style.display="none";
   $('copy_on_next_year_dup2_button').style.display="none";
   $('next_year_close').style.display="none";
   $('copy_on_next_year_prev_button').style.display="none";
   $('copy_on_next_year_reload').style.display="none";
   ajax = new Ajax.Request('/cgi/users/lookup/get_insegnamenti',
                              {method: 'post',
                               parameters: 'year='+year,
                               onSuccess: function(transport) {
                                            $("copy_on_next_year_insegnamenti").innerHTML=transport.responseText;
                                            $("copy_on_next_year_loading").style.display="none";
                                            $("copy_on_next_year_insegnamenti").style.display="block";
                                            $('next_year_close').style.display="block";
                                            $('copy_on_next_year_next_button').style.display="none";
                                            $('copy_on_next_year_next_button_top').style.display="none";
                                            $('copy_on_next_year_dup1_button').style.display="inline";
                                            $('copy_on_next_year_dup2_button').style.display="inline";
                                            $('copy_on_next_year_prev_button').style.display="inline";
                                            $('copy_on_next_year_reload').style.display="inline";
                                          },
                               onFailure: function() {
                                            alert('In questo momento non e\' stato possibile recuperare gli insegnamenti ... \nriprovare piu\' tardi');
                                            $('next_year_close').style.display="block";
                                            $('copy_on_next_year_dup1_button').style.display="none";
                                            $('copy_on_next_year_dup2_button').style.display="none";
                                            $('copy_on_next_year_next_button').style.display="none";
                                            $('copy_on_next_year_next_button_top').style.display="none";
                                            $('copy_on_next_year_prev_button').style.display="inline";
                                            $('copy_on_next_year_reload').style.display="inline";
                                            copyOnNextYearNextStep1(year);
                                          }
                              }
                             );
  }
}

/*
 function copyOnNextYearNextStep3(year);
  Descrizione:
   Questa funzione e' lo step 3 della procedura guidata per la copia documenti.
   Viene attivata cliccando sul tasto con id 'copy_on_next_year_dup1,dup2_button'.
   Se nessun insegnamento e' stato selezionato, viene creato un messaggio di avviso
    e esce.
   Vengono:
    - creati i parametri da passare alla chiamata asincrona di duplicazione documenti
    - nascosti i tasti dup1,dup2,next,prev,reload e close ed i blocchi reload, insegnamenti,
        description_step2;
    - visualizzato il blocco duplicate
    - fatta la chiamata asincrona per la duplicazione e in caso di:
      successo vengono:
       - inserito il risultato nel blocco response;
       - nascosto il blocco duplicate;
       - visualizzato il blocco response;
       - ricaricata la pagina iniziale dopo un tempo di 5 secondi;
      insuccesso vengono:
       - nascosto il blocco duplicate;
       - mandato un alert a video per l'errore;
       - richiamata la funzione per lo step 2 copyOnNextYearNextStep2(year)
  Parametri:
   year: anno corrente
   pubblica: se true il documento deve essere anche pubblicato
*/

function copyOnNextYearNextStep3(year,pubblica) {
  var find_it,i,div,text,ajax,params_eprint,params,insegnamenti,eprints;
  insegnamenti=new Array;
  eprints=new Array;
  find_it=false;
  i=1;
  while ($('checkbox_'+ i + '_codice_insegnamento')) {
    if ($('checkbox_' + i + '_codice_insegnamento').checked) {
      find_it=true;
      insegnamenti.push(encodeURIComponent($('checkbox_' + i + '_codice_insegnamento').value));
    }
    i++;
  }
  if (! find_it) {
    alert('Bisogna selezionare almeno un insegnamento per proseguire.\n Per terminare cliccare sul tasto in alto a destra "chiudi"');
    return;
  }
  i=0;
  while ($('sel_'+i)) {
    if ($('sel_'+i).checked) {
      eprints.push(encodeURIComponent($('sel_'+i).value));
    }
    i++;
  }
  params_eprint= 'eprint='+eprints.join('&eprint=');
  params=params_eprint + '&ins='   +insegnamenti.join('&ins=');
  if (pubblica) {
    params=params + "&pubblica=1";
  }
  $('copy_on_next_year_dup1_button').style.display="none";
  $('copy_on_next_year_dup2_button').style.display="none";
  $('copy_on_next_year_next_button').style.display="none";
  $('copy_on_next_year_next_button_top').style.display="none";
  $('copy_on_next_year_prev_button').style.display="none";
  $('copy_on_next_year_reload').style.display="none";
  $('copy_on_next_year_insegnamenti').style.display="none";
  $('next_year_description_step2').style.display="none";
  $('next_year_close').style.display="none";
  $("copy_on_next_year_duplicate").style.display="block";
  ajax = new Ajax.Request('/cgi/users/lookup/duplicate',
                              {method: 'post',
                               parameters: params,
                               onSuccess: function(transport) {
                                            $("copy_on_next_year_response").innerHTML=transport.responseText;
                                            $("copy_on_next_year_duplicate").style.display="none";
                                            $("copy_on_next_year_response").style.display="block";
                                            // location.search=location.search + '&' + params_eprint;
                                            window.setTimeout('location.reload()',4000);
                                          },
                               onFailure: function() {
                                            $("copy_on_next_year_duplicate").style.display="none";
                                            alert('Errore nella richiesta di duplicazione al server ... \nriprovare piu\' tardi');
                                            copyOnNextYearNextStep2(year);
                                          }
                              }
                         );

}

/*
  function copyOnNextYearSelectAll()
   Descrizione:
    Seleziona/deseleziona tutti i documenti in base al valore del
     primo checkbox.
    Questa funzione viene abilitata cliccando sull'ultima colonna della riga
     degli header della tabella dei documenti.
*/

function copyOnNextYearSelectAll() {
  var i,check;
  if ($('sel_0')) {
    if ( $('sel_0').checked) {
      check=false;
    }
    else {
      check=true;
    }
    i=0;
    while ($('sel_'+i)) {
      if ($('sel_'+i).checked != check) {
        $('sel_'+i).checked=check;
        copyOnNextYearCheckboxOnclick($('sel_'+i));
      }
      i++;
    }
  }
  else { return; } 
}

/*
 function copyOnNextYearCheckboxDisabledOnclick(c)
  Descrizione:
   Invia un alert a video per indicare che tale operazione non e' possibile.
   Richiamata cliccando nella colonna dei check dove il documento associato
    e' gia dell'anno corrente.
*/

function copyOnNextYearCheckboxDisabledOnclick(c) {
  alert('Puoi selezionare solamente i documenti di anni precedenti');
  return false;
}

/*
 function copyOnNextYearCheckboxOnclickEvent(e)
  Descrizione:
   ricava l'oggetto associato al click e lo passa come
    parametro alla funzione copyOnNextYearCheckboxOnclick.
   richiamata dall'evento onclick dei checkbox
  Parametri:
   e: oggetto evento
*/

function copyOnNextYearCheckboxOnclickEvent(e) {
  var sorgente;
  if(!e) e = window.event;
  // a questo punto e contiene un riferimento crossbrower
  // all'oggetto event
  sorgente = (e.target) ? e.target: e.srcElement;
  // sorgente contiene un riferimento crossbrowser
  // all'oggetto dal quale il flusso di bubbling si è generato
  copyOnNextYearCheckboxOnclick(sorgente);
}

/*
 function copyOnNextYearCheckboxOnclick(c)
  Descizione:
   cambia il background dei documenti selezionati/deselezionati
  Parametri:
   c: e' un oggetto checkbox relativo alla tabella dei documenti
*/

function copyOnNextYearCheckboxOnclick(c) {
  var color,td; 
  td=c.parentNode.parentNode.firstChild; 
  if (c.checked) {
    color="#d3d3d3";
    if (td.className.indexOf('ep_columns_cell_archive') != -1) {
      td.setAttribute('old_background_color','#ccffcc');
    }
    else {
      td.setAttribute('old_background_color','#ffffcc');
    }
  } 
  else {
   //color="#ffffcc";
   color=td.getAttribute('old_background_color');
   td.removeAttribute('old_background_color'); 
  }; 
  while(td.nextSibling) {
    td.style.backgroundColor=color;
    td=td.nextSibling;
  }; 
  new Effect.Highlight($("copy_on_next_year_next_button"),{restorecolor: "#f3f4fa"});
}

// Aggiungo in coda un gestore dell'evento 'load' del documento tramite la funzione initAccessCopyOnNextYearWatch()
Event.observe(window,'load', function () { initAccessCopyOnNextYearWatch(); });
/* 
  ===  ================================================================ ====
  ====  FINE FUNZIONI PER LA COPIA DEI DOCUMENTI PER L'ANNO SUCCESSIVO  ====
  ====        VALIDO PER LA PARTE GESTIONALE DEI DOCUMENTI              ====
  ===  ================================================================ ====
*/