var enabletabpersistence=1; //enable tab persistence via session only cookies, so selected tab is remembered?
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 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;
}
}
}
var bustcachevar=1; //bust potential caching of external pages after initial request? (1=yes, 0=no)
var loadstatustext="<img src='loading.gif' /> Cargando Contenido...";
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 expandtab(tabcontentid, tabnumber){ //interface for selecting a tab (plus expand corresponding content)
var thetab=document.getElementById(tabcontentid).getElementsByTagName("a")[tabnumber];
if (thetab.getAttribute("rel")){
ajaxpage(thetab.getAttribute("href"), thetab.getAttribute("rel"), thetab);
loadobjs(thetab.getAttribute("rev"));
}
}
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 initializetabcontent(){
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
}}}}}
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=/)
}