function tabberObj(argsObj){
	var arg;
	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(0);";
	DOM_a.title = t.headingText;
	DOM_a.onclick = this.navClick; /*タブ切り替えと遷移を同時に行う場合はonmouseup*/
	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);
  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);
  }

}