//************************************ Tab.asp ************************************************************
//Author(s)		: Troy Latief
//Date			: Wednesday, 20 December 2006
//Version		     : v1.0.1
//Description	     : Javascript functions for Tabs on Directhotel page
//History		     :
//
//Name:				Date:			Description:
//-----------------------------------------------------------------------------------------------------------------
//Troy Latief           05/02/07            Added functionality to remember the Tab
//*****************************************************************************************************************

var bustcachevar=1
var loadstatustext="<img src='/Advantage/images/loading.gif' style='margin-left:50px;' /> <span class='fs-small'>Loading content...</span><br /><br />"
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 c-dark"  //highlight currently clicked on tab
if (url.indexOf("#default")!=-1){ //if simply show default content within container (verus fetch it via ajax)
	if (containerid == 'ajaxcontentarea')	//Check if the tab is preloaded or not
	{
		document.getElementById('tfacilities').style.display="none";
		document.getElementById('ajaxcontentarea').style.display="block";
		document.getElementById(containerid).innerHTML=defaultcontentarray[containerid];		
	}
	else
	{
		document.getElementById('ajaxcontentarea').style.display="none";
		document.getElementById('tfacilities').style.display="block";
	}
return
}
else
{

}
document.getElementById('tfacilities').style.display="none";
document.getElementById('ajaxcontentarea').style.display="block";
document.getElementById(containerid).innerHTML=loadstatustext
page_request.onreadystatechange=function(){
loadpage(page_request, containerid)
}
if (bustcachevar)
    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 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 c-dark"){
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
}
}
}
}
}