var bustcachevar = 0; //bust potential caching of external pages after initial request? (1 = yes, 0 = no)
var loadstatustext = "<div class='top center pt20'><img alt='Loading' src='/imgs/icons/loading4.gif' class='loading4' /></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("div");
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]; // var x = url.indexOf("#search")// document.write(x)
return;
}
if (url !='http://www.aladin.info/search/index_search_2.php'  && url !='http://www.aladin.info/search/index_search_3.php'  ){ 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("div"); //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
}
}
}
}
}