function tabberObj(argsObj)
{
var arg; /* name of an argument to override */
this.div = null;


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;

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) {

/* Determine the id name */
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 the user specified an onTabDisplay function, call it now. */
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);
divs = document.getElementsByTagName("div");
for (i=0; i < divs.length; i++) {
if (divs[i].className &&
	divs[i].className.match(tempObj.REclassMain)) {

/* Now tabify the DIV */
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);
}

}