/***********************************************
* Tab Content script- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code
***********************************************/
//** Tab Content script- © Dynamic Drive DHTML code library (http://www.dynamicdrive.com)
//** Last updated: Nov 8th, 06

var enabletabpersistence=0 //enable tab persistence via session only cookies, so selected tab is remembered?

////NO NEED TO EDIT BELOW////////////////////////
var tabcontentIDs=new Object()

function expandcontent(linkobj, switching){
	var ulid=linkobj.parentNode.parentNode.id //id of UL element
	var ullist=document.getElementById(ulid).getElementsByTagName("li") //get list of LIs corresponding to the tab contents
	for (var i=0; i<ullist.length; i++){
		ullist[i].className=""  //deselect all tabs
	if (typeof tabcontentIDs[ulid][i]!="undefined") //if tab content within this array index exists (exception: More tabs than there are tab contents)
		document.getElementById(tabcontentIDs[ulid][i]).style.display="none" //hide all tab contents
	}
	if(switching){
		var err = document.getElementById("pcs_error");
		if(err){
			err.style.display="none";//hide error when switching from tab
		}
		var rel = linkobj.getAttribute("rel");
		switch(rel){
			case"tcontent1":
				document.getElementById("postalCodeSearchForm:defaultTab").value="1";
				break;
			case"tcontent2":
				document.getElementById("postalCodeSearchForm:defaultTab").value="4";
				break;
			case"tcontent3":
				document.getElementById("postalCodeSearchForm:defaultTab").value="3";
				break;
		}
	}
	linkobj.parentNode.className="selected"  //highlight currently clicked on tab
	document.getElementById(linkobj.getAttribute("rel")).style.display="block" //expand corresponding tab content
	saveselectedtabcontentid(ulid, linkobj.getAttribute("rel"))
	
	var pcs2 = document.getElementById("pcs2_description");
	var pcs = document.getElementById("pcs_description");
	var pcsA = document.getElementById("pcsA_description");
	
	pcs2.style.display="none";
	pcs.style.display="none";
	pcsA.style.display="none";
	var rel = linkobj.getAttribute("rel");
	switch(rel){
		case"tcontent1":
			pcs2.style.display="block";
			document.getElementById("postalCodeSearchForm:pcs2_localidade").focus();
			break;
		case"tcontent2":
			pcs.style.display="block";
			document.getElementById("postalCodeSearchForm:pcs1_cp4").focus();
			break;
		case"tcontent3":
			pcsA.style.display="block";
			document.getElementById("postalCodeSearchForm:pcsA_localidade").focus();
			break;
	}
}

function expandtab(tabcontentid, tabnumber){ //interface for selecting a tab (plus expand corresponding content)
	var thetab=document.getElementById(tabcontentid).getElementsByTagName("a")[tabnumber]
	if (thetab.getAttribute("rel")){
		expandcontent(thetab)
	}
}

function savetabcontentids(ulid, relattribute){// save ids of tab content divs
	if (typeof tabcontentIDs[ulid]=="undefined") //if this array doesn't exist yet
		tabcontentIDs[ulid]=new Array()
	tabcontentIDs[ulid][tabcontentIDs[ulid].length]=relattribute
}

function saveselectedtabcontentid(ulid, selectedtabid){ //set id of clicked on tab as selected tab id & enter into cookie
	if (enabletabpersistence==1) //if persistence feature turned on
		setCookie(ulid, selectedtabid)
}

function getullistlinkbyId(ulid, tabcontentid){ //returns a tab link based on the ID of the associated tab content
	var ullist=document.getElementById(ulid).getElementsByTagName("li")
	for (var i=0; i<ullist.length; i++){
		if (ullist[i].getElementsByTagName("a")[0].getAttribute("rel")==tabcontentid){
			return ullist[i].getElementsByTagName("a")[0]
			break
		}
	}
}

function initializetabcontent(){
	var tabs=new Array(5);//references used to expand default tab
	
	for (var i=0; i<arguments.length; i++){ //loop through passed UL ids
		if (enabletabpersistence==0 && getCookie(arguments[i])!="") //clean up cookie if persist=off
			setCookie(arguments[i], "")
			var clickedontab=getCookie(arguments[i]) //retrieve ID of last clicked on tab from cookie, if any
			var ulobj=document.getElementById(arguments[i])
			var ulist=ulobj.getElementsByTagName("li") //array containing the LI elements within UL
			for (var x=0; x<ulist.length; x++){ //loop through each LI element
			var ulistlink=ulist[x].getElementsByTagName("a")[0]
			if (ulistlink.getAttribute("rel")){
				savetabcontentids(arguments[i], ulistlink.getAttribute("rel")) //save id of each tab content as loop runs
				ulistlink.onclick=function(){
					expandcontent(this,true)
					return false
				}
				var rel = ulistlink.getAttribute("rel");
				if(rel=="tcontent1")
					tabs[1]=ulistlink;
				if(rel=="tcontent2")
					tabs[4]=ulistlink;
				if(rel=="tcontent3")
					tabs[3]=ulistlink;
				
				if (ulist[x].className=="selected" && clickedontab!=""){ //if a tab is set to be selected by default
					expandcontent(ulistlink) //auto load currenly selected tab content
			}
		}
	} //end inner for loop
if (clickedontab!=""){ //if a tab has been previously clicked on per the cookie value
	var culistlink=getullistlinkbyId(arguments[i], clickedontab)
	if (typeof culistlink!="undefined"){ //if match found between tabcontent id and rel attribute value
		expandcontent(culistlink) //auto load currenly selected tab content
	}
	else{ //else if no match found between tabcontent id and rel attribute value (cookie mis-association)
		expandcontent(ulist[0].getElementsByTagName("a")[0]) //just auto load first tab instead
	}
}
} //end outer for loop
var defaultTab = document.forms["postalCodeSearchForm"].elements["postalCodeSearchForm:defaultTab"].value;
switch(defaultTab){
	case "0":
		break;
	case "1":
		expandcontent(tabs[1]);
		break;
	case "3":
		expandcontent(tabs[3]);
		break;
	case "4":
		expandcontent(tabs[4]);
}

}


function getCookie(Name){ 
	var re=new RegExp(Name+"=[^;]+", "i"); //construct RE to search for target name/value pair
	if (document.cookie.match(re)) //if cookie found
		return document.cookie.match(re)[0].split("=")[1] //return its value
	return ""
}

function setCookie(name, value){
	document.cookie = name+"="+value //cookie value is domain wide (path=/)
}