/* this code is a copy of http://www.barelyfitz.com/projects/tabber/example-cookies.html for conserving the last opened tab 
	changes are marked explicitly
*/


// commented out by Sabine Grabner: 
// display none removed properties from the textarea so that it was displayed with default properties (320x240 px).
// instead I used visibility:hidden, but I put it into tabber.css
// document.write('<style type="text/css">.tabber{display:none;}<\/style>');

/*
 * ================================================== Set the tabber options
 * (must do this before including tabber.js)
 * ==================================================
 */
var tabberOptions = {

  'cookie':"tabber", /* Name to use for the cookie */

  'onLoad': function(argsObj)
  {
    var t = argsObj.tabber;
    var i;

    /*
	 * Optional: Add the id of the tabber to the cookie name to allow for
	 * multiple tabber interfaces on the site. If you have multiple tabber
	 * interfaces (even on different pages) I suggest setting a unique id on
	 * each one, to avoid having the cookie set the wrong tab.
	 */
    if (t.id) {
      t.cookie = t.id + t.cookie;
// alert(t.id);
    }

    /* If a cookie was previously set, restore the active tab */
    i = parseInt(getCookie(t.cookie));
    if (isNaN(i)) { return; }
    t.tabShow(i);
// alert('getCookie(' + t.cookie + ') = ' + i);
  },

  'onClick':function(argsObj)
  {
    var c = argsObj.tabber.cookie;
    var i = argsObj.index;
// alert('setCookie(' + c + ',' + i + ')');
       
    // change by Sabine Grabner: only conserve tabs that have an ID for a <div>
	// of class tabber
    if (c == 'tabber'){
    	i = 0;
    }
    
    var tid = argsObj.tabber.tabs[i].div.id; // .div.headingText attributes["title"];
    if (tid == 'preview') 
	{	
		window.frames["preview_frame"].location.reload(true);
	}	
    
    setCookie(c, i);
  }
};

/*
 * ================================================== Cookie functions
 * ==================================================
 */
function setCookie(name, value, expires, path, domain, secure) {
    document.cookie= name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires.toGMTString() : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}

function getCookie(name) {
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1) {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    } else {
        begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1) {
        end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
}

function deleteCookie(name, path, domain) {
    if (getCookie(name)) {
        document.cookie = name + "=" +
            ((path) ? "; path=" + path : "") +
            ((domain) ? "; domain=" + domain : "") +
            "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
}

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(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);
	}
}