function tabberObj()
{
  this.classMain = "tabber";
  this.classMainLive = "tabberlive";
  this.classTab = "tabbertab";
  this.classTabDefault = "tabbertabdefault";
  this.classNav = "tabbernav";
  this.classTabHide = "tabbertabhide";
  this.classNavActive = "tabberactive";
  this.titleElements = ['h2','h3','h4','h5','h6'];
  this.titleElementsStripHTML = true;
  this.removeTitle = true;
  for (var n in arguments[0]) { this[n] = arguments[0][n]; }
  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, 
  headingElement; 
  if (!document.getElementsByTagName) { return false; }
  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.onClick;
    DOM_a.tabber = this;
    DOM_a.tabIndex = i;
    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);
  return this;
};


tabberObj.prototype.onClick = function()
{
  var a = this;
  if (!a.tabber) { return false; }

  var self = a.tabber;
  var tabIndex = a.tabIndex;
  a.blur();
  self.tabShow(tabIndex);
  return false;
};
tabberObj.prototype.tabHideAll = function()
{
  for (var i = 0; i < this.tabs.length; i++) {
    this.tabHide(i);
  }
};


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


tabberObj.prototype.tabShow = function(tabIndex)
{
  if (!this.tabs[tabIndex]) { return false; }
  this.tabHideAll();
  var div = this.tabs[tabIndex].div;
  div.className = div.className.replace(this.REclassTabHide, '');
  this.navSetActive(tabIndex);
  return this;
};
tabberObj.prototype.navSetActive = function(tabIndex)
{
  this.tabs[tabIndex].li.className = this.classNavActive;
  return this;
};
tabberObj.prototype.navClearActive = function(tabIndex)
{
  this.tabs[tabIndex].li.className = '';
  return this;
};
/*==================================================*/
function tabberAutomatic(tabberArgs)
{

  if (!tabberArgs) { tabberArgs = {}; }
  var tempObj = new tabberObj(tabberArgs);
  var divs = document.getElementsByTagName("div");
  for (var 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)
{
      tabberAutomatic(tabberArgs);
}