/* Copyright (c) 2008 Jeff Margenau */

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'];
  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);
  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);}
}