//** Tab Content script- © Dynamic Drive DHTML code library (http://www.dynamicdrive.com)
//** Last updated: June 29th, 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){
	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
	}

	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"))
}

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(){
	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)
					return false
				}

				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
}


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=/)
}