/*	sIFR 2.0.1
	Copyright 2004 - 2005 Mike Davidson, Shaun Inman, Tomas Jogin and Mark Wubben

	This software is licensed under the CC-GNU LGPL <http://creativecommons.org/licenses/LGPL/2.1/>
*/

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aj=(navigator.plugins["Shockwave Flash 2.0"]||navigator.plugins["Shockwave Flash"]).description;f.h=parseInt(aj.charAt(aj.indexOf(".")-1))}if(g.match(/.*(windows|mac).*/)==null||f.o||f.c||(f.d&&(g.match(/.*mac.*/)!=null||f.i<7.6))||(f.b&&f.h<7)||(!f.b&&f.a&&f.k<124)||(f.m&&f.j<20020523))f.f=false;if(!f.o&&!f.m&&al.createElementNS)try{al.createElementNS(a,"i").innerHTML=""}catch(e){f.e=true}f.p=f.c||(f.a&&f.k<312)||f.n;return f}();function at(){return{bIsWebKit:f.a,bIsSafari:f.b,bIsKonq:f.c,bIsOpera:f.d,bIsXML:f.e,bHasTransparencySupport:f.f,bUseDOM:f.g,nFlashVersion:f.h,nOperaVersion:f.i,nGeckoBuildDate:f.j,nWebKitVersion:f.k,bIsKHTML:f.l,bIsGecko:f.m,bIsIE:f.n,bIsIEMac:f.o,bUseInnerHTMLHack:f.p}}if(am.hasFlash==false||!al.getElementsByTagName||!al.getElementById||(f.e&&f.p))return{UA:at()};function af(e){if((!k.bAutoInit&&(am.event||e)!=null)||!l(e))return;b=true;for(var i=0,h=ah.length;i<h;i++)j.apply(null,ah[i]);ah=[]}var k=af;function 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ah.push(arguments);aq();named.extract(arguments,{sSelector:function(ap){I=ap},sFlashSrc:function(ap){J=ap},sColor:function(ap){K=ap},sLinkColor:function(ap){L=ap},sHoverColor:function(ap){M=ap},sBgColor:function(ap){N=ap},nPaddingTop:function(ap){O=ap},nPaddingRight:function(ap){P=ap},nPaddingBottom:function(ap){Q=ap},nPaddingLeft:function(ap){R=ap},sFlashVars:function(ap){S=ap},sCase:function(ap){r=ap},sWmode:function(ap){T=ap}});var U=parseSelector(I);if(U.length==0)return false;if(S!=null)S="&"+S.normalize();else S="";if(K!=null)S+="&textcolor="+K;if(M!=null)S+="&hovercolor="+M;if(M!=null||L!=null)S+="&linkcolor="+(L||K);if(O==null)O=0;if(P==null)P=0;if(Q==null)Q=0;if(R==null)R=0;if(N==null)N="#FFFFFF";if(T=="transparent")if(!f.f)T="opaque";else N="transparent";if(T==null)T="";var p,V,W,X,Y,Z,aa,ab,ac;var ad=null;for(var 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if(typeof sIFR == "function" && !sIFR.UA.bIsIEMac){
	sIFR.setup();
};
// setTimeout holder for the loading dots (...)
var demLoading;

function dem_Vote(that)
{
	inpts = that.getElementsByTagName('input');
	user_added = false;
	ans = -1;
	theSubmit = false;
	for (i = 0; i < inpts.length; i++)
	{
		cur = inpts[i];
		if (cur.type == 'radio' && cur.checked)
		{
			ans = cur.value;
			if (ans == 'newAnswer')
			{
			    user_added = true;
                ans = inpts[i+1].value;
            }
        }
		if (cur.name == 'dem_poll_id')
			poll_id = cur.value;
			
        if (cur.name == 'dem_cookie_days')
            cdays = cur.value;

		if (cur.type == 'submit')
			theSubmit = cur;

	}	
	
	// they haven't checked a box or they added a blank answer
	if (ans == -1 || ans == '')
		return false;

	demLoading = setTimeout(dem_loadingDots.bind(theSubmit), 50);

	path = that.action;
	
	if (user_added)
	{
	   path += "?dem_action=add_answer";
	   path += "&dem_new_answer="+encodeURIComponent(ans);
	   
	} else
	{
	   path += "?dem_action=vote";
	   path += "&dem_poll_"+poll_id+"="+ans;
    } 
    
	path += "&dem_poll_id="+poll_id;
	path += "&dem_ajax=true";
		
	dem_ajax.open("GET", path, true);
	dem_ajax.onreadystatechange = dem_displayVotes.bind(that);
	dem_ajax.send(null);
	

	return false;
}

function dem_addUncheck()
{
	oUL = this.parentNode.parentNode;
	lis = oUL.getElementsByTagName('li');
	
	els = lis[lis.length-1].childNodes;
	
	for (i = els.length-1; i >= 0; i--)
		if (els[i].nodeName.toLowerCase() == 'a')
			els[i].style.display = '';
		else
			els[i].parentNode.removeChild(els[i]);
		
			

	Inp = oUL.getElementsByTagName('input');
    for (i = 0; i < Inp.length; i++)
    {
        Inp[i].onclick = function () { return true };
    }

    return true;
}

function dem_addAnswer(that)
{
    allBoxes = that.parentNode.parentNode.getElementsByTagName('input');
    
    for (i = 0; i < allBoxes.length; i++)
    {
        allBoxes[i].onclick = dem_addUncheck;
		allBoxes[i].checked = false;
    }

	that.style.display = 'none';
	i1 = document.createElement('input');
	i1.type = 'radio';
	i1.value = 'newAnswer';
	i1.checked = true;
	
	i2 = document.createElement('input');
	i2.className = 'addAnswerText';
	
	that.parentNode.appendChild(i1);
	that.parentNode.appendChild(i2);	

	i2.focus();
    
    return false;
}

// very simple ajaxy loading visual
// adds 3 dots to link, then erase and start over
function dem_loadingDots() {
	
	isInput = this.nodeName.toLowerCase() == 'input';
	
	str = (isInput) ? this.value : this.innerHTML;

	if (str.substring(str.length-3) == '...')
		if (isInput)
			this.value     = str.substring(0, str.length-3);
		else
			this.innerHTML = str.substring(0, str.length-3);
	else
		if (isInput)
			this.value     += '.';
		else
			this.innerHTML += '.';
	
	demLoading = setTimeout(dem_loadingDots.bind(this), 200);
}

function dem_clearDots() {
	clearTimeout(demLoading);
}


function dem_getVotes(path, that)
{
	
	that.blur();
	demLoading = setTimeout(dem_loadingDots.bind(that), 50);

	dem_ajax.open("GET", path, true);
	dem_ajax.onreadystatechange = dem_displayVotes.bind(that.parentNode);
	dem_ajax.send(null);

    return false;
}

function dem_displayVotes ()
{
	
	if (dem_ajax.readyState != 4)
		return false;

	if (dem_ajax.status != 200)
	{
		alert('Error '+dem_ajax.status);
		return false;
	}
	
	clearTimeout(demLoading);
	this.innerHTML = dem_ajax.responseText;
}

function dem_getHTTPObject() {
  var xmlhttp;
  /*@cc_on
  @if (@_jscript_version >= 5)
    try {
      xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
      try {
        xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (E) {
        xmlhttp = false;
      }
    }
  @else
  xmlhttp = false;
  @end @*/
  if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
    try {
      xmlhttp = new XMLHttpRequest();
    } catch (e) {
      xmlhttp = false;
    }
  }
  return xmlhttp;
}


dem_ajax = new dem_getHTTPObject();


/*  from prototype.js */
Function.prototype.bind = function() {
  var __method = this, args = $A(arguments), object = args.shift();
  return function() {
    return __method.apply(object, args.concat($A(arguments)));
  }
}

var $A = Array.from = function(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) {
    return iterable.toArray();
  } else {
    var results = [];
    for (var i = 0; i < iterable.length; i++)
      results.push(iterable[i]);
    return results;
  }
}

/*

Cross-Browser XMLHttpRequest v1.2
=================================

Emulate Gecko 'XMLHttpRequest()' functionality in IE and Opera. Opera requires
the Sun Java Runtime Environment <http://www.java.com/>.

by Andrew Gregory
http://www.scss.com.au/family/andrew/webdesign/xmlhttprequest/

This work is licensed under the Creative Commons Attribution License. To view a
copy of this license, visit http://creativecommons.org/licenses/by-sa/2.5/ or
send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California
94305, USA.

Attribution: Leave my name and web address in this script intact.

Not Supported in Opera
----------------------
* user/password authentication
* responseXML data member

Not Fully Supported in Opera
----------------------------
* async requests
* abort()
* getAllResponseHeaders(), getAllResponseHeader(header)

*/
// IE support
if (window.ActiveXObject && !window.XMLHttpRequest) {
  window.XMLHttpRequest = function() {
    var msxmls = new Array(
      'Msxml2.XMLHTTP.5.0',
      'Msxml2.XMLHTTP.4.0',
      'Msxml2.XMLHTTP.3.0',
      'Msxml2.XMLHTTP',
      'Microsoft.XMLHTTP');
    for (var i = 0; i < msxmls.length; i++) {
      try {
        return new ActiveXObject(msxmls[i]);
      } catch (e) {
      }
    }
    return null;
  };
}
// Gecko support
/* ;-) */
// Opera support
if (window.opera && !window.XMLHttpRequest) {
  window.XMLHttpRequest = function() {
    this.readyState = 0; // 0=uninitialized,1=loading,2=loaded,3=interactive,4=complete
    this.status = 0; // HTTP status codes
    this.statusText = '';
    this._headers = [];
    this._aborted = false;
    this._async = true;
    this._defaultCharset = 'ISO-8859-1';
    this._getCharset = function() {
      var charset = _defaultCharset;
      var contentType = this.getResponseHeader('Content-type').toUpperCase();
      val = contentType.indexOf('CHARSET=');
      if (val != -1) {
        charset = contentType.substring(val);
      }
      val = charset.indexOf(';');
      if (val != -1) {
        charset = charset.substring(0, val);
      }
      val = charset.indexOf(',');
      if (val != -1) {
        charset = charset.substring(0, val);
      }
      return charset;
    };
    this.abort = function() {
      this._aborted = true;
    };
    this.getAllResponseHeaders = function() {
      return this.getAllResponseHeader('*');
    };
    this.getAllResponseHeader = function(header) {
      var ret = '';
      for (var i = 0; i < this._headers.length; i++) {
        if (header == '*' || this._headers[i].h == header) {
          ret += this._headers[i].h + ': ' + this._headers[i].v + '\n';
        }
      }
      return ret;
    };
    this.getResponseHeader = function(header) {
      var ret = getAllResponseHeader(header);
      var i = ret.indexOf('\n');
      if (i != -1) {
        ret = ret.substring(0, i);
      }
      return ret;
    };
    this.setRequestHeader = function(header, value) {
      this._headers[this._headers.length] = {h:header, v:value};
    };
    this.open = function(method, url, async, user, password) {
      this.method = method;
      this.url = url;
      this._async = true;
      this._aborted = false;
      this._headers = [];
      if (arguments.length >= 3) {
        this._async = async;
      }
      if (arguments.length > 3) {
        opera.postError('XMLHttpRequest.open() - user/password not supported');
      }
      this.readyState = 1;
      if (this.onreadystatechange) {
        this.onreadystatechange();
      }
    };
    this.send = function(data) {
      if (!navigator.javaEnabled()) {
        alert("XMLHttpRequest.send() - Java must be installed and enabled.");
        return;
      }
      if (this._async) {
        setTimeout(this._sendasync, 0, this, data);
        // this is not really asynchronous and won't execute until the current
        // execution context ends
      } else {
        this._sendsync(data);
      }
    }
    this._sendasync = function(req, data) {
      if (!req._aborted) {
        req._sendsync(data);
      }
    };
    this._sendsync = function(data) {
      this.readyState = 2;
      if (this.onreadystatechange) {
        this.onreadystatechange();
      }
      // open connection
      var url = new java.net.URL(new java.net.URL(window.location.href), this.url);
      var conn = url.openConnection();
      for (var i = 0; i < this._headers.length; i++) {
        conn.setRequestProperty(this._headers[i].h, this._headers[i].v);
      }
      this._headers = [];
      if (this.method == 'POST') {
        // POST data
        conn.setDoOutput(true);
        var wr = new java.io.OutputStreamWriter(conn.getOutputStream(), this._getCharset());
        wr.write(data);
        wr.flush();
        wr.close();
      }
      // read response headers
      // NOTE: the getHeaderField() methods always return nulls for me :(
      var gotContentEncoding = false;
      var gotContentLength = false;
      var gotContentType = false;
      var gotDate = false;
      var gotExpiration = false;
      var gotLastModified = false;
      for (var i = 0; ; i++) {
        var hdrName = conn.getHeaderFieldKey(i);
        var hdrValue = conn.getHeaderField(i);
        if (hdrName == null && hdrValue == null) {
          break;
        }
        if (hdrName != null) {
          this._headers[this._headers.length] = {h:hdrName, v:hdrValue};
          switch (hdrName.toLowerCase()) {
            case 'content-encoding': gotContentEncoding = true; break;
            case 'content-length'  : gotContentLength   = true; break;
            case 'content-type'    : gotContentType     = true; break;
            case 'date'            : gotDate            = true; break;
            case 'expires'         : gotExpiration      = true; break;
            case 'last-modified'   : gotLastModified    = true; break;
          }
        }
      }
      // try to fill in any missing header information
      var val;
      val = conn.getContentEncoding();
      if (val != null && !gotContentEncoding) this._headers[this._headers.length] = {h:'Content-encoding', v:val};
      val = conn.getContentLength();
      if (val != -1 && !gotContentLength) this._headers[this._headers.length] = {h:'Content-length', v:val};
      val = conn.getContentType();
      if (val != null && !gotContentType) this._headers[this._headers.length] = {h:'Content-type', v:val};
      val = conn.getDate();
      if (val != 0 && !gotDate) this._headers[this._headers.length] = {h:'Date', v:(new Date(val)).toUTCString()};
      val = conn.getExpiration();
      if (val != 0 && !gotExpiration) this._headers[this._headers.length] = {h:'Expires', v:(new Date(val)).toUTCString()};
      val = conn.getLastModified();
      if (val != 0 && !gotLastModified) this._headers[this._headers.length] = {h:'Last-modified', v:(new Date(val)).toUTCString()};
      // read response data
      var reqdata = '';
      var stream = conn.getInputStream();
      if (stream) {
        var reader = new java.io.BufferedReader(new java.io.InputStreamReader(stream, this._getCharset()));
        var line;
        while ((line = reader.readLine()) != null) {
          if (this.readyState == 2) {
            this.readyState = 3;
            if (this.onreadystatechange) {
              this.onreadystatechange();
            }
          }
          reqdata += line + '\n';
        }
        reader.close();
        this.status = 200;
        this.statusText = 'OK';
        this.responseText = reqdata;
        this.readyState = 4;
        if (this.onreadystatechange) {
          this.onreadystatechange();
        }
        if (this.onload) {
          this.onload();
        }
      } else {
        // error
        this.status = 404;
        this.statusText = 'Not Found';
        this.responseText = '';
        this.readyState = 4;
        if (this.onreadystatechange) {
          this.onreadystatechange();
        }
        if (this.onerror) {
          this.onerror();
        }
      }
    };
  };
}
// ActiveXObject emulation
if (!window.ActiveXObject && window.XMLHttpRequest) {
  window.ActiveXObject = function(type) {
    switch (type.toLowerCase()) {
      case 'microsoft.xmlhttp':
      case 'msxml2.xmlhttp':
      case 'msxml2.xmlhttp.3.0':
      case 'msxml2.xmlhttp.4.0':
      case 'msxml2.xmlhttp.5.0':
        return new XMLHttpRequest();
    }
    return null;
  };
}
/* EventCalendar. Copyright (C) 2005, Alex Tingle.  $Revision: 242 $
 * This file is licensed under the GNU GPL. See LICENSE file for details.
 */

// Set in HTML file:
//   var ec3.start_of_week
//   var ec3.month_of_year
//   var ec3.month_abbrev
//   var ec3.myfiles
//   var ec3.home
//   var ec3.hide_logo
//   var ec3.viewpostsfor

/** Register an onload function. */
function WindowOnload(f)
{
  var prev=window.onload;
  window.onload=function(){ if(prev)prev(); f(); }
}

// namespace
function ec3()
{
  WindowOnload( function()
  {
    // Overwrite the href links in ec3_prev & ec3_next to activate EC3.
    var prev=document.getElementById('ec3_prev');
    var next=document.getElementById('ec3_next');
    if(prev && next)
    {
      // Check for cat limit in month link
      var xCat=new RegExp('&cat=[0-9]+$');
      var match=xCat.exec(prev.href);
      if(match)
        ec3.catClause=match[0];
      // Replace links
      prev.href='javascript:ec3.go_prev()';
      next.href='javascript:ec3.go_next()';
      // Pre-load image.
      ec3.imgwait=new Image(14,14);
      ec3.imgwait.src=ec3.myfiles+'/ec_load.gif';
      // Convert strings from PHP into Unicode
      ec3.viewpostsfor=unencode(ec3.viewpostsfor);
      for(var i=0; i<ec3.month_of_year.length; i++)
        ec3.month_of_year[i]=unencode(ec3.month_of_year[i]);
      for(var j=0; j<ec3.month_abbrev.length; j++)
        ec3.month_abbrev[j]=unencode(ec3.month_abbrev[j]);
    }
  } );

  /** Converts HTML encoded text (e.g. "&copy Copyright") into Unicode. */
  function unencode(text)
  {
    if(!ec3.unencodeDiv)
      ec3.unencodeDiv=document.createElement('div');
    ec3.unencodeDiv.innerHTML=text;
    return (ec3.unencodeDiv.innerText || ec3.unencodeDiv.firstChild.nodeValue);
  }

  function get_child_by_tag_name(element,tag_name)
  {
    var results=element.getElementsByTagName(tag_name);
    if(results)
      for(var i=0; i<results.length; i++)
        if(results[i].parentNode==element)
          return results[i];
    return 0;
  }
  ec3.get_child_by_tag_name=get_child_by_tag_name;


  function calc_day_id(day_num,month_num,year_num)
  {
    if(ec3.today_day_num==day_num &&
       ec3.today_month_num==month_num &&
       ec3.today_year_num==year_num)
    {
      return 'today';
    }
    else
    {
      return 'ec3_'+year_num+'_'+month_num+'_'+day_num;
    }
  }


  /** Replaces the caption and tbody in table to be the specified year/month. */
  function create_calendar(table,month_num,year_num)
  {
    // Take a deep copy of the current calendar.
    var table=table.cloneNode(1);

    // Calculate the zero-based month_num
    var month_num0=month_num-1;

    // Set the new caption
    var caption=get_child_by_tag_name(table,'caption');
    if(caption && caption.firstChild)
    {
      var c=caption.firstChild;
      var caption_text=ec3.month_of_year[month_num0] + ' ' + year_num;
      if(c.nodeType==ec3.TEXT_NODE)
      {
        c.data=caption_text;
      }
      else if(c.nodeType==ec3.ELEMENT_NODE && (c.tagName=='A' || c.tagName=='a')
           && c.firstChild && c.firstChild.nodeType==ec3.TEXT_NODE )
      {
        c.href=ec3.home+'/?year='+year_num+'&monthnum='+month_num;
        if(ec3.catClause)
           c.href+=ec3.catClause; // Copy cat' limit from original month link.
        c.title=ec3.viewpostsfor;
        c.title=c.title.replace(/%1\$s/,ec3.month_of_year[month_num0]);
        c.title=c.title.replace(/%2\$s/,year_num);
        c.firstChild.data=caption_text;
      }
    }

    if(caption && caption.firstChild && caption.firstChild.nodeType==ec3.TEXT_NODE)
      caption.firstChild.data=ec3.month_of_year[month_num0] + ' ' + year_num;

    var tbody=get_child_by_tag_name(table,'tbody');

    // Remove all children from the table body
    while(tbody.lastChild)
      tbody.removeChild(tbody.lastChild);

    // Make a new calendar.
    var date=new Date(year_num,month_num0,1, 12,00,00);

    var tr=document.createElement('tr');
    var td,div;
    tbody.appendChild(tr);
    var day_count=0
    var col=0;
    while(date.getMonth()==month_num0 && day_count<40)
    {
      var day=(date.getDay()+7-ec3.start_of_week)%7;
      if(col>6)
      {
        tr=document.createElement('tr');
        tbody.appendChild(tr);
        col=0;
      }
      if(col<day)
      {
        // insert padding
        td=document.createElement('td');
        td.colSpan=day-col;
        td.className='pad';
        tr.appendChild(td);
        col=day;
      }
      // insert day
      td=document.createElement('td');
      td.appendChild(document.createTextNode(date.getDate()));
      td.id=calc_day_id(date.getDate(),month_num,year_num);
      tr.appendChild(td);
      col++;
      day_count++;
      date.setDate(date.getDate()+1);
    }
    // insert padding
    if(col<7)
    {
      td=document.createElement('td');
      td.colSpan=7-col;
      td.className='pad';
      tr.appendChild(td);
    }

    // add the 'dog'
    if((7-col)>1 && !ec3.hide_logo)
    {
      a=document.createElement('a');
      a.href='http://blog.firetree.net/?ec3_version='+ec3.version;
      a.title='Event Calendar '+ec3.version;
      td.style.verticalAlign='bottom';
      td.appendChild(a);
      div=document.createElement('div');
      div.className='ec3_ec';
      div.align='right'; // keeps IE happy
      a.appendChild(div);
    }

    // set table's element id
    table.id='ec3_'+year_num+'_'+month_num;

    return table;
  } // end create_calendar()


  /** Despatch an XMLHttpRequest for a month of calendar entries. */
  function loadDates(month_num,year_num)
  {
    var req=new XMLHttpRequest();
    if(req)
    {
      ec3.reqs.push(req);
      req.onreadystatechange=process_xml;
      req.open("GET",
        ec3.home+'/?ec3_xml='+year_num+'_'+month_num,true);
      set_spinner(1);
      req.send(null);
    }
  }
  

  /** Obtain an array of all the calendar tables. */
  function get_calendars()
  {
    var div=document.getElementById('wp-calendar');
    var result=new Array();
    for(var i=0; i<div.childNodes.length; i++)
    {
      var c=div.childNodes[i];
      if(c.id && c.id.search('ec3_[0-9]')==0 && c.style.display!='none')
        result.push(div.childNodes[i]);
    }
    if(result.length>0)
      return result;
    else
      return 0;
  }
  ec3.get_calendars=get_calendars;


  /** Changes the link text in the forward and backwards buttons.
   *  Parameters are the 0-based month numbers. */
  function rewrite_controls(prev_month0,next_month0)
  {
    var prev=document.getElementById('ec3_prev');
    if(prev && prev.firstChild && prev.firstChild.nodeType==ec3.TEXT_NODE)
      prev.firstChild.data='\u00ab\u00a0'+ec3.month_abbrev[prev_month0%12];
    var next=document.getElementById('ec3_next');
    if(next && next.firstChild && next.firstChild.nodeType==ec3.TEXT_NODE)
      next.firstChild.data=ec3.month_abbrev[next_month0%12]+'\u00a0\u00bb';
  }


  /** Turn the busy spinner on or off. */
  function set_spinner(on)
  {
    var spinner=document.getElementById('ec3_spinner');
    var publish=document.getElementById('ec3_publish');
    if(spinner)
    {
      if(on)
      {
        spinner.style.display='inline';
        if(publish)
          publish.style.display='none';
      }
      else
      {
        spinner.style.display='none';
        if(publish)
          publish.style.display='inline';
      }
    }
  }


  /** Called when the user clicks the 'previous month' button. */
  function go_prev()
  {
    var calendars=get_calendars();
    if(!calendars)
      return;
    var pn=calendars[0].parentNode;

    // calculate date of new calendar
    var id_array=calendars[0].id.split('_');
    if(id_array.length<3)
      return;
    var year_num=parseInt(id_array[1]);
    var month_num=parseInt(id_array[2])-1;
    if(month_num==0)
    {
      month_num=12;
      year_num--;
    }
    // Get new calendar
    var newcal=document.getElementById('ec3_'+year_num+'_'+month_num);
    if(newcal)
    {
      // Add in the new first calendar
      newcal.style.display=ec3.calendar_display;
    }
    else
    {
      newcal=create_calendar(calendars[0],month_num,year_num);
      pn.insertBefore( newcal, calendars[0] );
      loadDates(month_num,year_num);
    }
    // Hide the last calendar
    ec3.calendar_display=calendars[calendars.length-1].style.display;
    calendars[calendars.length-1].style.display='none';

    // Re-write the forward & back buttons.
    rewrite_controls(month_num+10,month_num+calendars.length-1);
  }
  ec3.go_prev=go_prev;


  /** Called when the user clicks the 'next month' button. */
  function go_next()
  {
    var calendars=get_calendars();
    if(!calendars)
      return;
    var pn=calendars[0].parentNode;
    var last_cal=calendars[calendars.length-1];

    // calculate date of new calendar
    var id_array=last_cal.id.split('_');
    if(id_array.length<3)
      return;
    var year_num=parseInt(id_array[1]);
    var month_num=1+parseInt(id_array[2]);
    if(month_num==13)
    {
      month_num=1;
      year_num++;
    }
    // Get new calendar
    var newcal=document.getElementById('ec3_'+year_num+'_'+month_num);
    if(newcal)
    {
      // Add in the new last calendar
      newcal.style.display=ec3.calendar_display;
    }
    else
    {
      newcal=create_calendar(calendars[0],month_num,year_num);
      if(last_cal.nextSibling)
        pn.insertBefore(newcal,last_cal.nextSibling);
      else
        pn.appendChild(newcal);
      loadDates(month_num,year_num);
    }
    // Hide the first calendar
    ec3.calendar_display=calendars[0].style.display;
    calendars[0].style.display='none';

    // Re-write the forward & back buttons.
    rewrite_controls(month_num-calendars.length+11,month_num);
  }
  ec3.go_next=go_next;


  /** Triggered when the XML load is complete. Checks that load is OK, and then
   *  updates calendar days. */
  function process_xml()
  {
    var busy=0;
    for(var i=0; i<ec3.reqs.length; i++)
    {
      var req=ec3.reqs[i];
      if(req)
      {
        if(req.readyState==4)
        {
          ec3.reqs[i]=0;
          if(req.status==200)
            update_days(req.responseXML.documentElement);
        }
        else
          busy=1;
      }
    }
    if(!busy)
    {
      // Remove old requests.
      while(ec3.reqs.shift && ec3.reqs.length && !ec3.reqs[0])
        ec3.reqs.shift();
      set_spinner(0);
    }
  }


  /** Adds links to the calendar for each day listed in the XML. */
  function update_days(month_xml)
  {
    var days=month_xml.getElementsByTagName('day');
    if(!days)
      return;
    for(var i=0; i<days.length; i++)
    {
      var td=document.getElementById(days[i].getAttribute('id'));
      if(td && td.firstChild && td.firstChild.nodeType==ec3.TEXT_NODE)
      {
        td.className='ec3_postday';
        var txt=td.removeChild(td.firstChild);
        var a=document.createElement('a');
        a.href=days[i].getAttribute('link');
        a.title=days[i].getAttribute('titles');
        if(days[i].getAttribute('is_event'))
        {
          td.className+=' ec3_eventday';
          a.className='eventday';
        }
        a.appendChild(txt);
        td.appendChild(a);
      }
    }
    if(typeof ec3_Popup != 'undefined')
    {
      var month=
        document.getElementById(month_xml.childNodes[0].getAttribute('id'));
      if(month)
        ec3_Popup.add_tbody( get_child_by_tag_name(month,'tbody') );
    }
  }


} // end namespace ec3

// Export public functions from ec3 namespace.
ec3();

// Set up static variables in namespace 'ec3'.

// Get today's date.
// Note - DO THIS ONCE, so that the value of today never changes!
ec3.today=new Date();
ec3.today_day_num=ec3.today.getDate();
ec3.today_month_num=1+ec3.today.getMonth();
ec3.today_year_num=ec3.today.getFullYear();

// Holds ongoing XmlHttp requests.
ec3.reqs=new Array();

ec3.ELEMENT_NODE=1;
ec3.TEXT_NODE=3;

ec3.version='3.1.0';

/* Simple AJAX Code-Kit (SACK) */
/* ©2005 Gregory Wild-Smith */
/* www.twilightuniverse.com */
/* Software licenced under a modified X11 licence, see documentation or authors website for more details */

function sack(file){
	this.AjaxFailedAlert = "Your browser does not support the enhanced functionality of this website, and therefore you will have an experience that differs from the intended one.\n";
	this.requestFile = file;
	this.method = "POST";
	this.URLString = "";
	this.encodeURIString = true;
	this.execute = false;

	this.onLoading = function() { };
	this.onLoaded = function() { };
	this.onInteractive = function() { };
	this.onCompletion = function() { };

	this.createAJAX = function() {
		try {
			this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (err) {
				this.xmlhttp = null;
			}
		}
		if(!this.xmlhttp && typeof XMLHttpRequest != "undefined")
			this.xmlhttp = new XMLHttpRequest();
		if (!this.xmlhttp){
			this.failed = true; 
		}
	};
	
	this.setVar = function(name, value){
		if (this.URLString.length < 3){
			this.URLString = name + "=" + value;
		} else {
			this.URLString += "&" + name + "=" + value;
		}
	}
	
	this.encVar = function(name, value){
		var varString = encodeURIComponent(name) + "=" + encodeURIComponent(value);
	return varString;
	}
	
	this.encodeURLString = function(string){
		varArray = string.split('&');
		for (i = 0; i < varArray.length; i++){
			urlVars = varArray[i].split('=');
			if (urlVars[0].indexOf('amp;') != -1){
				urlVars[0] = urlVars[0].substring(4);
			}
			varArray[i] = this.encVar(urlVars[0],urlVars[1]);
		}
	return varArray.join('&');
	}
	
	this.runResponse = function(){
		eval(this.response);
	}
	
	this.runAJAX = function(urlstring){
		this.responseStatus = new Array(2);
		if(this.failed && this.AjaxFailedAlert){ 
			alert(this.AjaxFailedAlert); 
		} else {
			if (urlstring){ 
				if (this.URLString.length){
					this.URLString = this.URLString + "&" + urlstring; 
				} else {
					this.URLString = urlstring; 
				}
			}
			if (this.encodeURIString){
				var timeval = new Date().getTime(); 
				this.URLString = this.encodeURLString(this.URLString);
				this.setVar("rndval", timeval);
			}
			if (this.element) { this.elementObj = document.getElementById(this.element); }
			if (this.xmlhttp) {
				var self = this;
				if (this.method == "GET") {
					var totalurlstring = this.requestFile + "?" + this.URLString;
					this.xmlhttp.open(this.method, totalurlstring, true);
				} else {
					this.xmlhttp.open(this.method, this.requestFile, true);
				}
				if (this.method == "POST"){
  					try {
						this.xmlhttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded')  
					} catch (e) {}
				}

				this.xmlhttp.send(this.URLString);
				this.xmlhttp.onreadystatechange = function() {
					switch (self.xmlhttp.readyState){
						case 1:
							self.onLoading();
						break;
						case 2:
							self.onLoaded();
						break;
						case 3:
							self.onInteractive();
						break;
						case 4:
							self.response = self.xmlhttp.responseText;
							self.responseXML = self.xmlhttp.responseXML;
							self.responseStatus[0] = self.xmlhttp.status;
							self.responseStatus[1] = self.xmlhttp.statusText;
							self.onCompletion();
							if(self.execute){ self.runResponse(); }
							if (self.elementObj) {
								var elemNodeName = self.elementObj.nodeName;
								elemNodeName.toLowerCase();
								if (elemNodeName == "input" || elemNodeName == "select" || elemNodeName == "option" || elemNodeName == "textarea"){
									self.elementObj.value = self.response;
								} else {
									self.elementObj.innerHTML = self.response;
								}
							}
							self.URLString = "";
						break;
					}
				};
			}
		}
	};
this.createAJAX();
}
/*	Prototype JavaScript framework, version 1.5.0_rc0
 *	(c) 2005 Sam Stephenson <sam@conio.net>
 *
 *	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: '1.5.0_rc0',
	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 (var 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() {
	var __method = this, args = $A(arguments), object = args.shift();
	return function() {
		return __method.apply(object, args.concat($A(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;
			}
		}
	}
}
Object.extend(String.prototype, {
	gsub: function(pattern, replacement) {
		var result = '', source = this, match;
		replacement = arguments.callee.prepareReplacement(replacement);

		while (source.length > 0) {
			if (match = source.match(pattern)) {
				result += source.slice(0, match.index);
				result += (replacement(match) || '').toString();
				source	= source.slice(match.index + match[0].length);
			} else {
				result += source, source = '';
			}
		}
		return result;
	},

	sub: function(pattern, replacement, count) {
		replacement = this.gsub.prepareReplacement(replacement);
		count = count === undefined ? 1 : count;

		return this.gsub(pattern, function(match) {
			if (--count < 0) return match[0];
			return replacement(match);
		});
	},

	scan: function(pattern, iterator) {
		this.gsub(pattern, iterator);
		return this;
	},

	truncate: function(length, truncation) {
		length = length || 30;
		truncation = truncation === undefined ? '...' : truncation;
		return this.length > length ?
			this.slice(0, length - truncation.length) + truncation : this;
	},

	strip: function() {
		return this.replace(/^\s+/, '').replace(/\s+$/, '');
	},

	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(function(script) { return eval(script) });
	},

	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(/\\/g, '\\\\').replace(/'/g, '\\\'') + "'";
	}
});

String.prototype.gsub.prepareReplacement = function(replacement) {
	if (typeof replacement == 'function') return replacement;
	var template = new Template(replacement);
	return function(match) { return template.evaluate(match) };
}

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

var Template = Class.create();
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
Template.prototype = {
	initialize: function(template, pattern) {
		this.template = template.toString();
		this.pattern	= pattern || Template.Pattern;
	},

	evaluate: function(object) {
		return this.template.gsub(this.pattern, function(match) {
			var before = match[1];
			if (before == '\\') return match[2];
			return before + (object[match[3]] || '').toString();
		});
	}
}

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 (result == undefined || value >= result)
				result = value;
		});
		return result;
	},

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

	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) return [];
	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);

if (!Array.prototype._reverse)
	Array.prototype._reverse = Array.prototype.reverse;

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

	clear: function() {
		this.length = 0;
		return this;
	},

	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 && 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(inline) {
		return (inline !== false ? this : this.toArray())._reverse();
	},

	inspect: function() {
		return '[' + this.map(Object.inspect).join(', ') + ']';
	}
});
var Hash = {
	_each: function(iterator) {
		for (var 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 XMLHttpRequest()},
			function() {return new ActiveXObject('Msxml2.XMLHTTP')},
			function() {return new ActiveXObject('Microsoft.XMLHTTP')}
		) || 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,
			contentType:	'application/x-www-form-urlencoded',
			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,
			 'Accept', 'text/javascript, text/html, application/xml, text/xml, */*'];

		if (this.options.method == 'post') {
			requestHeaders.push('Content-type', this.options.contentType);

			/* 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') || '').match(/^text\/javascript/i))
				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);
	}
});
function $() {
	var results = [], element;
	for (var i = 0; i < arguments.length; i++) {
		element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);
		results.push(Element.extend(element));
	}
	return results.length < 2 ? results[0] : results;
}

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(Element.extend(child));
		return elements;
	});
}

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

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

Element.extend = function(element) {
	if (!element) return;
	if (_nativeExtensions) return element;

	if (!element._extended && element.tagName && element != window) {
		var methods = Element.Methods, cache = Element.extend.cache;
		for (property in methods) {
			var value = methods[property];
			if (typeof value == 'function')
				element[property] = cache.findOrStore(value);
		}
	}

	element._extended = true;
	return element;
}

Element.extend.cache = {
	findOrStore: function(value) {
		return this[value] = this[value] || function() {
			return value.apply(null, [this].concat($A(arguments)));
		}
	}
}

Element.Methods = {
	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);
	},

	replace: function(element, html) {
		element = $(element);
		if (element.outerHTML) {
			element.outerHTML = html.stripScripts();
		} else {
			var range = element.ownerDocument.createRange();
			range.selectNodeContents(element);
			element.parentNode.replaceChild(
				range.createContextualFragment(html.stripScripts()), element);
		}
		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 $(element).innerHTML.match(/^\s*$/);
	},

	childOf: function(element, ancestor) {
		element = $(element), ancestor = $(ancestor);
		while (element = element.parentNode)
			if (element == ancestor) return true;
		return false;
	},

	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;
	},

	setStyle: function(element, style) {
		element = $(element);
		for (var name in style)
			element.style[name.camelize()] = style[name];
	},

	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;
	}
}

Object.extend(Element, Element.Methods);

var _nativeExtensions = false;

if(!HTMLElement && /Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
	var HTMLElement = {}
	HTMLElement.prototype = document.createElement('div').__proto__;
}

Element.addMethods = function(methods) {
	Object.extend(Element.Methods, methods || {});

	if(typeof HTMLElement != 'undefined') {
		var methods = Element.Methods, cache = Element.extend.cache;
		for (property in methods) {
			var value = methods[property];
			if (typeof value == 'function')
				HTMLElement.prototype[property] = cache.findOrStore(value);
		}
		_nativeExtensions = true;
	}
}

Element.addMethods();

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) {
				var tagName = this.element.tagName.toLowerCase();
				if (tagName == 'tbody' || tagName == 'tr') {
					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(false).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 Selector = Class.create();
Selector.prototype = {
	initialize: function(expression) {
		this.params = {classNames: []};
		this.expression = expression.toString().strip();
		this.parseExpression();
		this.compileMatcher();
	},

	parseExpression: function() {
		function abort(message) { throw 'Parse error in selector: ' + message; }

		if (this.expression == '')	abort('empty expression');

		var params = this.params, expr = this.expression, match, modifier, clause, rest;
		while (match = expr.match(/^(.*)\[([a-z0-9_:-]+?)(?:([~\|!]?=)(?:"([^"]*)"|([^\]\s]*)))?\]$/i)) {
			params.attributes = params.attributes || [];
			params.attributes.push({name: match[2], operator: match[3], value: match[4] || match[5] || ''});
			expr = match[1];
		}

		if (expr == '*') return this.params.wildcard = true;

		while (match = expr.match(/^([^a-z0-9_-])?([a-z0-9_-]+)(.*)/i)) {
			modifier = match[1], clause = match[2], rest = match[3];
			switch (modifier) {
				case '#':			 params.id = clause; break;
				case '.':			 params.classNames.push(clause); break;
				case '':
				case undefined: params.tagName = clause.toUpperCase(); break;
				default:				abort(expr.inspect());
			}
			expr = rest;
		}

		if (expr.length > 0) abort(expr.inspect());
	},

	buildMatchExpression: function() {
		var params = this.params, conditions = [], clause;

		if (params.wildcard)
			conditions.push('true');
		if (clause = params.id)
			conditions.push('element.id == ' + clause.inspect());
		if (clause = params.tagName)
			conditions.push('element.tagName.toUpperCase() == ' + clause.inspect());
		if ((clause = params.classNames).length > 0)
			for (var i = 0; i < clause.length; i++)
				conditions.push('Element.hasClassName(element, ' + clause[i].inspect() + ')');
		if (clause = params.attributes) {
			clause.each(function(attribute) {
				var value = 'element.getAttribute(' + attribute.name.inspect() + ')';
				var splitValueBy = function(delimiter) {
					return value + ' && ' + value + '.split(' + delimiter.inspect() + ')';
				}

				switch (attribute.operator) {
					case '=':			 conditions.push(value + ' == ' + attribute.value.inspect()); break;
					case '~=':			conditions.push(splitValueBy(' ') + '.include(' + attribute.value.inspect() + ')'); break;
					case '|=':			conditions.push(
														splitValueBy('-') + '.first().toUpperCase() == ' + attribute.value.toUpperCase().inspect()
													); break;
					case '!=':			conditions.push(value + ' != ' + attribute.value.inspect()); break;
					case '':
					case undefined: conditions.push(value + ' != null'); break;
					default:				throw 'Unknown operator ' + attribute.operator + ' in selector';
				}
			});
		}

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

	compileMatcher: function() {
		this.match = new Function('element', 'if (!element.tagName) return false; \
			return ' + this.buildMatchExpression());
	},

	findElements: function(scope) {
		var element;

		if (element = $(this.params.id))
			if (this.match(element))
				if (!scope || Element.childOf(element, scope))
					return [element];

		scope = (scope || document).getElementsByTagName(this.params.tagName || '*');

		var results = [];
		for (var i = 0; i < scope.length; i++)
			if (this.match(element = scope[i]))
				results.push(Element.extend(element));

		return results;
	},

	toString: function() {
		return this.expression;
	}
}

function $$() {
	return $A(arguments).map(function(expression) {
		return expression.strip().split(/\s+/).inject([null], function(results, expr) {
			var selector = new Selector(expr);
			return results.map(selector.findElements.bind(selector)).flatten();
		});
	}).flatten();
}
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 (var 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) {
			var key = encodeURIComponent(parameter[0]);
			if (key.length == 0) return;

			if (parameter[1].constructor != Array)
				parameter[1] = [parameter[1]];

			return parameter[1].map(function(value) {
				return key + '=' + encodeURIComponent(value);
			}).join('&');
		}
	},

	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 || opt.text;
		}
		return [element.name, value];
	},

	selectMany: function(element) {
		var value = [];
		for (var i = 0; i < element.length; i++) {
			var opt = element.options[i];
			if (opt.selected)
				value.push(opt.value || opt.text);
		}
		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) {
			try {
				element.detachEvent('on' + name, observer);
			} catch (e) {}
		}
	}
});

/* prevent memory leaks in IE */
if (navigator.appVersion.match(/\bMSIE\b/))
	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];
	}
}