/* Copyright (c) 2006 Patrick Fitzgerald */

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=true;
	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);
	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);}
}