/*==================================================
  Copyright (c) 2006 Patrick Fitzgerald

  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.
  ==================================================*/
/* see templates area for complete version with comments HJB */
function tabberObj(argsObj)
{
  var arg; 
  this.div = null;
  this.classMain = "notabs";
  this.classMainLive = "tabbed";
  this.classTab = "tab";
  this.classTabDefault = "tabbedtabdefault";
  this.classNav = "tabbednav";
  this.classTabHide = "tabhide";
  this.classNavActive = "activetab";
  this.titleElements = ['h3','h4','h5','h6'];
  this.titleElementsStripHTML = true;
  this.removeTitle = true;
  this.addLinkId = false;
  this.linkIdFormat = '<tabberid>nav<tabnumberone>';
  for (arg in argsObj) { this[arg] = argsObj[arg]; }
  this.REclassMain = new RegExp('\\b' + this.classMain + '\\b', 'gi');
  this.REclassMainLive = new RegExp('\\b' + this.classMainLive + '\\b', 'gi');
  this.REclassTab = new RegExp('\\b' + this.classTab + '\\b', 'gi');
  this.REclassTabDefault = new RegExp('\\b' + this.classTabDefault + '\\b', 'gi');
  this.REclassTabHide = new RegExp('\\b' + this.classTabHide + '\\b', 'gi');
  this.tabs = new Array();
  if (this.div) {
    this.init(this.div);
    this.div = null;
  }
}

tabberObj.prototype.init = function(e)
{
  var
  childNodes, 
  i, i2, 
  t, 
  defaultTab=0, 
  DOM_ul, 
  DOM_li, 
  DOM_a, 
  aId, 
  headingElement; 
  if (!document.getElementsByTagName) { return false; }
  if (e.id) {
    this.id = e.id;
  }
  this.tabs.length = 0;
  childNodes = e.childNodes;
  for(i=0; i < childNodes.length; i++) {
    if(childNodes[i].className &&
       childNodes[i].className.match(this.REclassTab)) {
      t = new Object();
      t.div = childNodes[i];   
      this.tabs[this.tabs.length] = t;
      if (childNodes[i].className.match(this.REclassTabDefault)) {
	defaultTab = this.tabs.length-1;
      }
    }
  }
  DOM_ul = document.createElement("ul");
  DOM_ul.className = this.classNav;
  for (i=0; i < this.tabs.length; i++) {
    t = this.tabs[i];
    t.headingText = t.div.title;
    if (this.removeTitle) { t.div.title = ''; }
    if (!t.headingText) {
      for (i2=0; i2<this.titleElements.length; i2++) {
	headingElement = t.div.getElementsByTagName(this.titleElements[i2])[0];
	if (headingElement) {
	  t.headingText = headingElement.innerHTML;
	  if (this.titleElementsStripHTML) {
	    t.headingText.replace(/<br>/gi," ");
	    t.headingText = t.headingText.replace(/<[^>]+>/g,"");
	  }
	  break;
	}
      }
    }
    if (!t.headingText) {
      t.headingText = i + 1;
    }
    DOM_li = document.createElement("li");
    t.li = DOM_li;
    DOM_a = document.createElement("a");
    DOM_a.appendChild(document.createTextNode(t.headingText));
    DOM_a.href = "javascript:void(null);";
    DOM_a.title = t.headingText;
    DOM_a.onclick = this.navClick;
    DOM_a.tabber = this;
    DOM_a.tabberIndex = i;
    if (this.addLinkId && this.linkIdFormat) {
      aId = this.linkIdFormat;
      aId = aId.replace(/<tabberid>/gi, this.id);
      aId = aId.replace(/<tabnumberzero>/gi, i);
      aId = aId.replace(/<tabnumberone>/gi, i+1);
      aId = aId.replace(/<tabtitle>/gi, t.headingText.replace(/[^a-zA-Z0-9\-]/gi, ''));
      DOM_a.id = aId;
    }
    DOM_li.appendChild(DOM_a);
    DOM_ul.appendChild(DOM_li);
  }
  e.insertBefore(DOM_ul, e.firstChild);
  e.className = e.className.replace(this.REclassMain, this.classMainLive);
  this.tabShow(defaultTab);
  if (typeof this.onLoad == 'function') {
    this.onLoad({tabber:this});
  }
  return this;
};

tabberObj.prototype.navClick = function(event)
{
  var
  rVal, 
  a, 
  self, 
  tabberIndex, 
  onClickArgs; 
  a = this;
  if (!a.tabber) { return false; }
  self = a.tabber;
  tabberIndex = a.tabberIndex;
  a.blur();
  if (typeof self.onClick == 'function') {
    onClickArgs = {'tabber':self, 'index':tabberIndex, 'event':event};
    if (!event) { onClickArgs.event = window.event; }
    rVal = self.onClick(onClickArgs);
    if (rVal === false) { return false; }
  }
  self.tabShow(tabberIndex);
  return false;
};

tabberObj.prototype.tabHideAll = function()
{
  var i; 
  for (i = 0; i < this.tabs.length; i++) {
    this.tabHide(i);
  }
};

tabberObj.prototype.tabHide = function(tabberIndex)
{
  var div;
  if (!this.tabs[tabberIndex]) { return false; }
  div = this.tabs[tabberIndex].div;
  if (!div.className.match(this.REclassTabHide)) {
    div.className += ' ' + this.classTabHide;
  }
  this.navClearActive(tabberIndex);
  return this;
};

tabberObj.prototype.tabShow = function(tabberIndex)
{
  var div;
  if (!this.tabs[tabberIndex]) { return false; }
  this.tabHideAll();
  div = this.tabs[tabberIndex].div;
  div.className = div.className.replace(this.REclassTabHide, '');
  this.navSetActive(tabberIndex);
  if (typeof this.onTabDisplay == 'function') {
    this.onTabDisplay({'tabber':this, 'index':tabberIndex});
  }
  return this;
};

tabberObj.prototype.navSetActive = function(tabberIndex)
{
  this.tabs[tabberIndex].li.className = this.classNavActive;
  return this;
};

tabberObj.prototype.navClearActive = function(tabberIndex)
{
  this.tabs[tabberIndex].li.className = '';
  return this;
};

function tabberAutomatic(tabberArgs)
{
  var
    tempObj, 
    divs, 
    i; 
  if (!tabberArgs) { tabberArgs = {}; }
  tempObj = new tabberObj(tabberArgs);
	if(document.getElementsByTagName) {
  divs = document.getElementsByTagName("div");
  for (i=0; i < divs.length; i++) {
    if (divs[i].className &&
	divs[i].className.match(tempObj.REclassMain)) {
      tabberArgs.div = divs[i];
      divs[i].tabber = new tabberObj(tabberArgs);
    }
  }
  return this;
}
}

function tabberAutomaticOnLoad(tabberArgs)
{
  var oldOnLoad;
  if (!tabberArgs) { tabberArgs = {}; }
  oldOnLoad = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = function() {
      tabberAutomatic(tabberArgs);
    };
  } else {
    window.onload = function() {
      oldOnLoad();
      tabberAutomatic(tabberArgs);
    };
  }
}
if (typeof tabberOptions == 'undefined') {
    tabberAutomaticOnLoad();
} else {
  if (!tabberOptions['manualStartup']) {
    tabberAutomaticOnLoad(tabberOptions);
  }
}