/* 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.classNavActive="tabberactive";
    this.classNav2="tabbernav2";
    this.classTabHide="tabbertabhide";
    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");
    //Hardcoded for Watch This
    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;
        }

        if(t.headingText=='Watch This')
        {
            t.li.className='tabbernav2';
            DOM_li.className='tabbernav2';
            //DOM_a.className='tabbernav2';
        }   

        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)
{
//    if(this.tabs[tabberIndex].li.className!='tabbernav2')
//    {
        this.tabs[tabberIndex].li.className=this.classNavActive;
//    }
    return this;
};
tabberObj.prototype.navClearActive=function(tabberIndex)
{
    if(this.tabs[tabberIndex].headingText=='Watch This')
    {
        this.tabs[tabberIndex].li.className='tabbernav2';
    } else {
        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);
    }
}