/*------------------------------------------------------------------------------
Function:       footnoteLinks()
Author:         Aaron Gustafson (aaron at easy-designs dot net)
Creation Date:  8 May 2005
Version:        1.3
Homepage:       http://www.easy-designs.net/code/footnoteLinks/
License:        Creative Commons Attribution-ShareAlike 2.0 License
                http://creativecommons.org/licenses/by-sa/2.0/
Note:           This script has been slightly modified by 
                Aggelia (http://www.aggelia.co.uk)
------------------------------------------------------------------------------*/
function footnoteLinks(containerID,targetID) {
  if (!document.getElementById || 
      !document.getElementsByTagName ||
      !document.createElement) return false;
  if (!document.getElementById(containerID) ||
      !document.getElementById(targetID)) return false;
  var container = document.getElementById(containerID);
  var target    = document.getElementById(targetID);
  var h2        = document.createElement('h2');
  addClass.apply(h2,['printOnly']);
  var h2_txt    = document.createTextNode('Link References');
  h2.appendChild(h2_txt);
  var coll = container.getElementsByTagName('*');
  var ol   = document.createElement('ol');
  addClass.apply(ol,['printOnly']);
  var myArr = [];
  var thisLink;
  var num = 1;
  for (var i=0; i<coll.length; i++) {
    var thisClass = coll[i].className;
    if ( coll[i].getAttribute('href') ||
         coll[i].getAttribute('cite') ) { 
      thisLink = coll[i].getAttribute('href') ? coll[i].href : coll[i].cite;
      var note = document.createElement('sup');
      addClass.apply(note,['printOnly']);
      var note_txt;
      var j = inArray.apply(myArr,[thisLink]);
      if ( j || j===0 ) {
        note_txt = document.createTextNode(j+1);
      } else {
        var li     = document.createElement('li');
        var li_txt = document.createTextNode(thisLink);
        li.appendChild(li_txt);
        ol.appendChild(li);
        myArr.push(thisLink);
        note_txt = document.createTextNode(num);
        num++;
      }
      note.appendChild(note_txt);
      if (coll[i].tagName.toLowerCase() == 'blockquote') {
        var lastChild = lastChildContainingText.apply(coll[i]);
        lastChild.appendChild(note);
      } else {
        coll[i].parentNode.insertBefore(note, coll[i].nextSibling);
      }
    }
  }
  target.appendChild(h2);
  target.appendChild(ol);
  addClass.apply(document.getElementsByTagName('html')[0],['noted']);

  //hide created container if no links found (Aggelia addition)
  if (num==1) {
  	target.style.height=0;
  	target.style.border=0;
  	target.style.overflow='hidden';
  }
  return true;
}
window.onload = function() {
  footnoteLinks('page_content','footnotes');
}

/*------------------------------------------------------------------------------
Excerpts from the jsUtilities Library
Version:        2.1
Homepage:       http://www.easy-designs.net/code/jsUtilities/
License:        Creative Commons Attribution-ShareAlike 2.0 License
                http://creativecommons.org/licenses/by-sa/2.0/
Note:           If you change or improve on this script, please let us know.
------------------------------------------------------------------------------*/
if(Array.prototype.push == null) {
  Array.prototype.push = function(item) {
    this[this.length] = item;
    return this.length;
  };
};
/*---------------------------------------------------------------------
                    function.apply (if unsupported)
             Courtesy of Aaron Boodman - http://youngpup.net
-----------------------------------------------------------------------*/
if (!Function.prototype.apply) {
  Function.prototype.apply = function(oScope, args) {
    var sarg = [];
    var rtrn, call;
    if (!oScope) oScope = window;
    if (!args) args = [];
    for (var i = 0; i < args.length; i++) {
      sarg[i] = "args["+i+"]";
    };
    call = "oScope.__applyTemp__(" + sarg.join(",") + ");";
    oScope.__applyTemp__ = this;
    rtrn = eval(call);
    oScope.__applyTemp__ = null;
	return rtrn;
  };
};
function inArray(needle) {
  for (var i=0; i < this.length; i++) {
    if (this[i] === needle) {
      return i;
    }
  }
  return false;
}
function addClass(theClass) {
  if (this.className != '') {
    this.className += ' ' + theClass;
  } else {
    this.className = theClass;
  }
}
function lastChildContainingText() {
  var testChild = this.lastChild;
  var contentCntnr = ['p','li','dd'];
  while (testChild.nodeType != 1) {
    testChild = testChild.previousSibling;
  } 
  var tag = testChild.tagName.toLowerCase();
  var tagInArr = inArray.apply(contentCntnr, [tag]);
  if (!tagInArr && tagInArr!==0) {
    testChild = lastChildContainingText.apply(testChild);
  }
  return testChild;
}