//** Ajax Tabs Content script v2.0- © Dynamic Drive DHTML code library (http://www.dynamicdrive.com)
//** Updated Oct 21st, 07 to version 2.0. Contains numerous improvements
//** Updated Feb 18th, 08 to version 2.1: Adds a public "tabinstance.cycleit(dir)" method to cycle forward or backward between tabs dynamically. Only .js file changed from v2.0.
//** Updated April 8th, 08 to version 2.2:
//   -Adds support for expanding a tab using a URL parameter (ie: http://mysite.com/tabcontent.htm?tabinterfaceid=0)
//   -Modified Ajax routine so testing the script out locally in IE7 now works

var ddajaxtabssettings={}
ddajaxtabssettings.bustcachevar=0  //bust potential caching of external pages after initial request? (1=yes, 0=no)
ddajaxtabssettings.loadstatustext=" "

function logoutCheck (){
    if (document.forms['fcLogOutForm']){
        if (document.forms['fcLogOutForm'].logout.value){
            document.forms['fcLogOutForm'].submit();
        }
    }
}

////NO NEED TO EDIT BELOW////////////////////////
	
var handleSuccessWithNoMethodCall = function(o){

	for (var i=0; i<o.argument[1].alldivs.length; i++){
		o.argument[1].alldivs[i].style.display="none";
	}

	if(o.responseText !== undefined){
     	o.argument[1].cachedom = false;
		o.argument[1].showdivid.style.display="block";
		o.argument[1].showdivid.innerHTML = o.responseText;
        logoutCheck();
		if(o.argument[1].successMethodName!=null){
			o.argument[1].successMethodName();
		}

	}
}

var handleSuccess = function(o){

	for (var i=0; i<o.argument[1].alldivs.length; i++){
		o.argument[1].alldivs[i].style.display="none";
	}

	if(o.responseText !== undefined){
        o.argument[1].cachedom = false;
		o.argument[1].showdivid.style.display="block";
		o.argument[1].showdivid.innerHTML = o.responseText;
        logoutCheck();
		if(o.argument[1].successMethodName!=null){
			o.argument[1].successMethodName();
		}
	}
}
var handleFailure  = function(o){
	if(o.responseText !== undefined){
      	o.argument[1].showdivid.style.display="block";
		o.argument[1].showdivid.innerHTML = "";
		o.argument[1].cachedom = true;
       logoutCheck();
	}
}


function getAjaxRequest(tourl, htmldivid, cacheit) {
	cacheit.cachedom = false;

	if (cacheit.postparamsarray != null) {
		var posted = "";
		try {
			for ( var i = 0; i < cacheit.postparamsarray.length; i++) {
				var temp = "";
				try {
					temp = document.getElementById(cacheit.postparamsarray[i]).value;
				} catch (es) {
				}

				if (temp != null && temp.length > 0) {
					if (posted.length == 0) {
						posted = posted + cacheit.postparamsarray[i] + "=" + temp;
					} else {
						posted = posted + "&" + cacheit.postparamsarray[i] + "=" + temp;
					}
				}

			}
		} catch (ex) {
		}

		var request = YAHOO.util.Connect.asyncRequest('POST', tourl, {
			timeout :25000,
			success :handleSuccessWithNoMethodCall,
			failure :handleFailure,
			argument : [ htmldivid, cacheit ]
		}, ("dumpar=dumpar&" + posted));

	} else {

		var request = YAHOO.util.Connect.asyncRequest('POST', tourl, {
			timeout :25000,
			success :handleSuccess,
			failure :handleFailure,
			argument : [ htmldivid, cacheit ]
		}, ("dumpar=dumpar"));
	}
}

function showdiv(showdivid, cachedom, alldivs,successMethodName,failureMethodName){
	this.showdivid=showdivid //ID of the showable div
	this.cachedom=cachedom	// boolean value to catch successful dom response
	this.alldivs=alldivs
	try{
		this.successMethodName=successMethodName
	}catch(ee){}
	try{
		this.failureMethodName=failureMethodName
	}catch(ee){}
}

function ddajaxtabs(tabinterfaceid, contentdivid,showdivarr, tablocationindex){
	this.showdivarr = showdivarr;
	this.tabinterfaceid=tabinterfaceid //ID of Tab Menu main container
	this.tabs=document.getElementById(tabinterfaceid).getElementsByTagName("a") //Get all tab links within container
	this.enabletabpersistence=false
	this.hottabspositions=[] //Array to store position of tabs that have a "rel" attr defined, relative to all tab links, within container
	this.currentTabIndex=0 //Index of currently selected hot tab (tab with sub content) within hottabspositions[] array
	this.contentdivid=contentdivid
	this.defaultHTML=""
	this.defaultIframe='<iframe src="about:blank" marginwidth="0" marginheight="0" frameborder="0" vspace="0" hspace="0" class="tabcontentiframe" style="width:100%; height:auto; min-height: 100px"></iframe>'
	this.defaultIframe=this.defaultIframe.replace(/<iframe/i, '<iframe name="'+"_ddajaxtabsiframe-"+contentdivid+'" ')
	this.revcontentids=[] //Array to store ids of arbitrary contents to expand/contact as well ("rev" attr values)
	this.selectedClassTarget="link" //keyword to indicate which target element to assign "selected" CSS class ("linkparent" or "link")
	this.tablocationindex = tablocationindex // location of tabs for sub name index
}

ddajaxtabs.connect=function(pageurl, tabinstance, divarray, arrayid){
	if(!divarray[arrayid].cachedom){
		for (var i=0; i< divarray[arrayid].alldivs.length; i++){
			 divarray[arrayid].alldivs[i].style.display="none"
		}
		divarray[arrayid].showdivid.style.display="block"
		return false;
	}else{
		var ajaxfriendlyurl=pageurl.replace(/^http:\/\/[^\/]+\//i, "http://"+window.location.host+"/")
		getAjaxRequest(ajaxfriendlyurl,tabinstance.contentdivid , divarray[arrayid])
	}
}


ddajaxtabs.ajaxpageloadaction=function(pageurl, tabinstance){
	tabinstance.onajaxpageload(pageurl) //call user customized onajaxpageload() function when an ajax page is fetched/ loaded
}

ddajaxtabs.getCookie=function(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 ""
}

ddajaxtabs.setCookie=function(name, value){
	document.cookie = name+"="+value+";path=/" //cookie value is domain wide (path=/)
}

ddajaxtabs.prototype={

	expandit:function(tabid_or_position){ //PUBLIC function to select a tab either by its ID or position(int) within its peers
				var tabref=""
				try{
					if (typeof tabid_or_position=="string" && document.getElementById(tabid_or_position).getAttribute("rel")) //if specified tab contains "rel" attr
						tabref=document.getElementById(tabid_or_position)
					else if (parseInt(tabid_or_position)!=NaN && this.tabs[tabid_or_position].getAttribute("rel")) //if specified tab contains "rel" attr
						tabref=this.tabs[tabid_or_position]
				}
				catch(err){alert("Invalid Tab ID or position entered!")}

				if (tabref!="") //if a valid tab is found based on function parameter
					this.expandtab(tabref,this.showdivarr) //expand this tab
	},

	setpersist:function(bool){ //PUBLIC function to toggle persistence feature
			this.enabletabpersistence=bool
	},

	loadajaxpage:function(pageurl){ //PUBLIC function to fetch a page via Ajax and display it within the Tab Content instance's container
		ddajaxtabs.connect(pageurl, this, this.showdivarr, 0)
	},

	loadiframepage:function(pageurl){ //PUBLIC function to fetch a page and load it into the IFRAME of the Tab Content instance's container
		this.iframedisplay(pageurl, this.contentdivid)
	},

	setselectedClassTarget:function(objstr){ //PUBLIC function to set which target element to assign "selected" CSS class ("linkparent" or "link")
		this.selectedClassTarget=objstr || "link"
	},

	getselectedClassTarget:function(tabref){ //Returns target element to assign "selected" CSS class to
		return (this.selectedClassTarget==("linkparent".toLowerCase()))? tabref.parentNode : tabref
	},

	urlparamselect:function(tabinterfaceid){
		var result=window.location.search.match(new RegExp(tabinterfaceid+"=(\\d+)", "i")) //check for "?tabinterfaceid=2" in URL
		return (result==null)? null : parseInt(RegExp.$1) //returns null or index, where index (int) is the selected tab's index
	},

	onajaxpageload:function(pageurl){ //PUBLIC Event handler that can invoke custom code whenever an Ajax page has been fetched and displayed
		//do nothing by default
	},

	expandtab:function(tabref ,divarray){

		var pathindex = 0;
		try{
			var pathkey = (tabref.pathname+tabref.search).substring((tabref.pathname+tabref.search).lastIndexOf("/")+1)
			pathindex  = this.tablocationindex[pathkey]
		}catch(ex){}
		var relattrvalue=tabref.getAttribute("rel")
		//Get "rev" attr as a string of IDs in the format ",john,george,trey,etc," to easy searching through
		var associatedrevids=(tabref.getAttribute("rev"))? ","+tabref.getAttribute("rev").replace(/\s+/, "")+"," : ""

		if (relattrvalue=="#default"){
			document.getElementById(this.contentdivid).innerHTML=this.defaultHTML
		}else if (relattrvalue=="#iframe"){
			this.iframedisplay(tabref.getAttribute("href"), this.contentdivid)
		}else{
			ddajaxtabs.connect(tabref.getAttribute("href"), this, this.showdivarr , pathindex)
		}

		this.expandrevcontent(associatedrevids)

		for (var i=0; i<this.tabs.length; i++){ //Loop through all tabs, and assign only the selected tab the CSS class "selected"
			this.getselectedClassTarget(this.tabs[i]).className=(this.tabs[i].getAttribute("href")==tabref.getAttribute("href"))? "selected" : ""
		}

		if (this.enabletabpersistence) //if persistence enabled, save selected tab position(int) relative to its peers
			ddajaxtabs.setCookie(this.tabinterfaceid, tabref.tabposition)

		this.setcurrenttabindex(tabref.tabposition) //remember position of selected tab within hottabspositions[] array
	},

	iframedisplay:function(pageurl, contentdivid){
		if (typeof window.frames["_ddajaxtabsiframe-"+contentdivid]!="undefined"){
			try{
				delete window.frames["_ddajaxtabsiframe-"+contentdivid]
			} //delete iframe within Tab content container if it exists (due to bug in Firefox)
			catch(err){}
		}

		document.getElementById(contentdivid).innerHTML=this.defaultIframe
		window.frames["_ddajaxtabsiframe-"+contentdivid].location.replace(pageurl) //load desired page into iframe
	},


	expandrevcontent:function(associatedrevids){
		var allrevids=this.revcontentids
		for (var i=0; i<allrevids.length; i++){ //Loop through rev attributes for all tabs in this tab interface
			//if any values stored within associatedrevids matches one within allrevids, expand that DIV, otherwise, contract it
			document.getElementById(allrevids[i]).style.display=(associatedrevids.indexOf(","+allrevids[i]+",")!=-1)? "block" : "none"
		}
	},

	setcurrenttabindex:function(tabposition){ //store current position of tab (within hottabspositions[] array)
		for (var i=0; i<this.hottabspositions.length; i++){
			if (tabposition==this.hottabspositions[i]){
				this.currentTabIndex=i
				break
			}
		}
	},

	init:function(automodeperiod){
	try{
		var persistedtab=ddajaxtabs.getCookie(this.tabinterfaceid) //get position of persisted tab (applicable if persistence is enabled)
		var selectedtab=-1 //Currently selected tab index (-1 meaning none)
		var selectedtabfromurl=this.urlparamselect(this.tabinterfaceid) //returns null or index from: tabcontent.htm?tabinterfaceid=index
		this.automodeperiod=automodeperiod || 0
		this.defaultHTML=document.getElementById(this.contentdivid).innerHTML

		for (var i=0; i<this.tabs.length; i++){
			this.tabs[i].tabposition=i //remember position of tab relative to its peers

			if (this.tabs[i].getAttribute("rel")){
				var tabinstance=this
				this.hottabspositions[this.hottabspositions.length]=i //store position of "hot" tab ("rel" attr defined) relative to its peers
				this.tabs[i].onclick=function(){
					tabinstance.expandtab(this,this.showdivarr)
					return false
				}

				if (this.tabs[i].getAttribute("rev")){ //if "rev" attr defined, store each value within "rev" as an array element
					this.revcontentids=this.revcontentids.concat(this.tabs[i].getAttribute("rev").split(/\s*,\s*/))
				}

				if (selectedtabfromurl==i || this.enabletabpersistence && selectedtab==-1 && parseInt(persistedtab)==i || !this.enabletabpersistence && selectedtab==-1 && this.getselectedClassTarget(this.tabs[i]).className=="selected"){
					selectedtab=i //Selected tab index, if found
				}
			}
		} //END for loop

		if (selectedtab!=-1) //if a valid default selected tab index is found
			this.expandtab(this.tabs[selectedtab],this.showdivarr) //expand selected tab (either from URL parameter, persistent feature, or class="selected" class)
		else //if no valid default selected index found
			this.expandtab(this.tabs[this.hottabspositions[0]],this.showdivarr) //Just select first tab that contains a "rel" attr

	 }catch(ex){}
	} //END int() function

} //END Prototype assignment