var bustcachevar=0 //bust potential caching of external pages after initial request? (1=yes, 0=no)
var loadstatustext="<div align=\"center\" style=\"padding-top:100px;padding-bottom:100px;\"><img src='/smb/includes/dhtml/ajaxtabs/loading.gif' /> Requesting content...</div>"

////NO NEED TO EDIT BELOW////////////////////////
var loadedobjects=""
var defaultcontentarray=new Object()
var bustcacheparameter=""

function ajaxpage(url, containerid, targetobj){
	var page_request = false
	if (window.XMLHttpRequest) // if Mozilla, Safari etc
	page_request = new XMLHttpRequest()
	else if (window.ActiveXObject){ // if IE
	try {
	page_request = new ActiveXObject("Msxml2.XMLHTTP")
	} 
	catch (e){
	try{
	page_request = new ActiveXObject("Microsoft.XMLHTTP")
	}
	catch (e){}
	}
	}
	else
	return false
	var ullist=targetobj.parentNode.parentNode.getElementsByTagName("li")
	for (var i=0; i<ullist.length; i++)
	ullist[i].className=""  //deselect all tabs
	targetobj.parentNode.className="selected"  //highlight currently clicked on tab
	if (url.indexOf("#default")!=-1){ //if simply show default content within container (verus fetch it via ajax)
	document.getElementById(containerid).innerHTML=defaultcontentarray[containerid]
	return
	}
	document.getElementById(containerid).innerHTML=loadstatustext
	page_request.onreadystatechange=function(){
	loadpage(page_request, containerid)
	}
	if (bustcachevar) //if bust caching of external page
	bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
	page_request.open('GET', url+bustcacheparameter, true)
	page_request.send(null)
	}
	
	function loadpage(page_request, containerid){
	if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
	document.getElementById(containerid).innerHTML=page_request.responseText
	}
	
	function loadobjs(revattribute){
	if (revattribute!=null && revattribute!=""){ //if "rev" attribute is defined (load external .js or .css files)
	var objectlist=revattribute.split(/\s*,\s*/) //split the files and store as array
	for (var i=0; i<objectlist.length; i++){
	var file=objectlist[i]
	var fileref=""
	if (loadedobjects.indexOf(file)==-1){ //Check to see if this object has not already been added to page before proceeding
	if (file.indexOf(".js")!=-1){ //If object is a js file
	fileref=document.createElement('script')
	fileref.setAttribute("type","text/javascript");
	fileref.setAttribute("src", file);
	}
	else if (file.indexOf(".css")!=-1){ //If object is a css file
	fileref=document.createElement("link")
	fileref.setAttribute("rel", "stylesheet");
	fileref.setAttribute("type", "text/css");
	fileref.setAttribute("href", file);
	}
	}
	if (fileref!=""){
	document.getElementsByTagName("head").item(0).appendChild(fileref)
	loadedobjects+=file+" " //Remember this object as being already added to page
	}
	}
	}
}

function savedefaultcontent(contentid){// save default ajax tab content
	if (typeof defaultcontentarray[contentid]=="undefined") //if default content hasn't already been saved
		defaultcontentarray[contentid]=document.getElementById(contentid).innerHTML
}

function startajaxtabs(){
	for (var i=0; i<arguments.length; i++){ //loop through passed UL ids
	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")){
	var modifiedurl=ulistlink.getAttribute("href").replace(/^http:\/\/[^\/]+\//i, "http://"+window.location.hostname+"/")
	ulistlink.setAttribute("href", modifiedurl) //replace URL's root domain with dynamic root domain, for ajax security sake
	savedefaultcontent(ulistlink.getAttribute("rel")) //save default ajax tab content
	ulistlink.onclick=function(){
	ajaxpage(this.getAttribute("href"), this.getAttribute("rel"), this)
	loadobjs(this.getAttribute("rev"))
	return false
	}
	if (ulist[x].className=="selected"){
	ajaxpage(ulistlink.getAttribute("href"), ulistlink.getAttribute("rel"), ulistlink) //auto load currenly selected tab content
	loadobjs(ulistlink.getAttribute("rev")) //auto load any accompanying .js and .css files
	}
	}
	}
	}
}