var switchcontent_ajax_msg='<em>Loading Ajax content...</em>'
var switchcontent_ajax_bustcache=true

function switchcontent(className, filtertag){
	this.className=className
	this.collapsePrev=false
	this.persistType="none"
	this.filter_content_tag=(typeof filtertag!="undefined")? filtertag.toLowerCase() : ""
	this.ajaxheaders={} 
}

switchcontent.prototype.setStatus=function(openHTML, closeHTML){ 
	this.statusOpen=openHTML
	this.statusClosed=closeHTML
}

switchcontent.prototype.setColor=function(openColor, closeColor){
	this.colorOpen=openColor
	this.colorClosed=closeColor
}

switchcontent.prototype.setPersist=function(bool, days){ 
	if (bool==true){ 
		if (typeof days=="undefined")
			this.persistType="session"
		else{ 
			this.persistType="days"
			this.persistDays=parseInt(days)
		}
	}
	else
		this.persistType="none"
}

switchcontent.prototype.collapsePrevious=function(bool){ 
	this.collapsePrev=bool
}

switchcontent.prototype.setContent=function(index, filepath){ 
	this.ajaxheaders["header"+index]=filepath
}

switchcontent.prototype.sweepToggle=function(setting){ 
	if (typeof this.headers!="undefined" && this.headers.length>0){ 
		for (var i=0; i<this.headers.length; i++){
			if (setting=="expand")
				this.expandcontent(this.headers[i]) 
			else if (setting=="contract")
				this.contractcontent(this.headers[i]) 
		}
	}
}


switchcontent.prototype.defaultExpanded=function(){ 
	var expandedindices=[] 
	for (var i=0; (!this.collapsePrev && i<arguments.length) || (this.collapsePrev && i==0); i++)
		expandedindices[expandedindices.length]=arguments[i]
	this.expandedindices=expandedindices.join(",") 
}


switchcontent.prototype.togglecolor=function(header, status){
	if (typeof this.colorOpen!="undefined")
		header.style.color=status
}


switchcontent.prototype.togglestatus=function(header, status){
	if (typeof this.statusOpen!="undefined")
		header.firstChild.innerHTML=status
}



switchcontent.prototype.contractcontent=function(header){
	var innercontent=document.getElementById(header.id.replace("-title", "")) 
	innercontent.style.display="none"
	this.togglestatus(header, this.statusClosed)
	this.togglecolor(header, this.colorClosed)
}


switchcontent.prototype.expandcontent=function(header){
	var innercontent=document.getElementById(header.id.replace("-title", ""))
	if (header.ajaxstatus=="waiting"){
		switchcontent.connect(header.ajaxfile, header)
	}
	innercontent.style.display="block"
	this.togglestatus(header, this.statusOpen)
	this.togglecolor(header, this.colorOpen)
}


switchcontent.prototype.toggledisplay=function(header){
	var innercontent=document.getElementById(header.id.replace("-title", "")) 
	if (innercontent.style.display=="block")
		this.contractcontent(header)
	else{
		this.expandcontent(header)
		if (this.collapsePrev && typeof this.prevHeader!="undefined" && this.prevHeader.id!=header.id) 
			this.contractcontent(this.prevHeader) 
	}
	if (this.collapsePrev)
		this.prevHeader=header 
}


switchcontent.prototype.collectElementbyClass=function(classname){ 
	var classnameRE=new RegExp("(^|\\s+)"+classname+"($|\\s+)", "i") 
	this.headers=[], this.innercontents=[]
	if (this.filter_content_tag!="") 
		var allelements=document.getElementsByTagName(this.filter_content_tag)
	else 
		var allelements=document.all? document.all : document.getElementsByTagName("*")
	for (var i=0; i<allelements.length; i++){
		if (typeof allelements[i].className=="string" && allelements[i].className.search(classnameRE)!=-1){
			if (document.getElementById(allelements[i].id+"-title")!=null){ 
				this.headers[this.headers.length]=document.getElementById(allelements[i].id+"-title") 
				this.innercontents[this.innercontents.length]=allelements[i] 
			}
		}
	}
}




switchcontent.prototype.init=function(){
	var instanceOf=this
	this.collectElementbyClass(this.className) 
	if (this.headers.length==0)
		return

	if (this.persistType=="days" && (parseInt(switchcontent.getCookie(this.className+"_dtrack"))!=this.persistDays))
		switchcontent.setCookie(this.className+"_d", "", -1)
	
	var opencontents_ids=(this.persistType=="session" && switchcontent.getCookie(this.className)!="")? ','+switchcontent.getCookie(this.className)+',' : (this.persistType=="days" && switchcontent.getCookie(this.className+"_d")!="")? ','+switchcontent.getCookie(this.className+"_d")+',' : (this.expandedindices)? ','+this.expandedindices+',' : ""
	for (var i=0; i<this.headers.length; i++){ 
		if (typeof this.ajaxheaders["header"+i]!="undefined"){
			this.headers[i].ajaxstatus='waiting' 
			this.headers[i].ajaxfile=this.ajaxheaders["header"+i]
		}
		if (typeof this.statusOpen!="undefined") 
			this.headers[i].innerHTML='<span class="status"></span>'+this.headers[i].innerHTML
		if (opencontents_ids.indexOf(','+i+',')!=-1){ 
			this.expandcontent(this.headers[i]) 
			if (this.collapsePrev) 
			this.prevHeader=this.headers[i] 
		}
		else 
			this.contractcontent(this.headers[i]) 
		this.headers[i].onclick=function(){instanceOf.toggledisplay(this)}
	} 
	switchcontent.dotask(window, function(){instanceOf.rememberpluscleanup()}, "unload") 
}



switchcontent.prototype.rememberpluscleanup=function(){
	
	var opencontents=new Array("none")
	for (var i=0; i<this.innercontents.length; i++){
	
		if (this.persistType!="none" && this.innercontents[i].style.display=="block" && (!this.collapsePrev || (this.collapsePrev && opencontents.length<2)))
			opencontents[opencontents.length]=i 
		this.headers[i].onclick=null 
	}
	if (opencontents.length>1)
		opencontents.shift() 
	if (typeof this.statusOpen!="undefined")
		this.statusOpen=this.statusClosed=null 
	if (this.persistType=="session") 
		switchcontent.setCookie(this.className, opencontents.join(",")) 
	else if (this.persistType=="days" && typeof this.persistDays=="number"){
		switchcontent.setCookie(this.className+"_d", opencontents.join(","), this.persistDays)
		switchcontent.setCookie(this.className+"_dtrack", this.persistDays, this.persistDays) 
	}
}



switchcontent.dotask=function(target, functionref, tasktype){ 
	var tasktype=(window.addEventListener)? tasktype : "on"+tasktype
	if (target.addEventListener)
		target.addEventListener(tasktype, functionref, false)
	else if (target.attachEvent)
		target.attachEvent(tasktype, functionref)
}

switchcontent.connect=function(pageurl, header){
	var page_request = false
	var bustcacheparameter=""
	if (window.ActiveXObject){ 
		try {
		page_request = new ActiveXObject("Msxml2.XMLHTTP")
		} 
		catch (e){
			try{
			page_request = new ActiveXObject("Microsoft.XMLHTTP")
			}
			catch (e){}
		}
	}
	else if (window.XMLHttpRequest) 
		page_request = new XMLHttpRequest()
	else
		return false
	page_request.onreadystatechange=function(){switchcontent.loadpage(page_request, header)}
	if (switchcontent_ajax_bustcache) 
		bustcacheparameter=(pageurl.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
	page_request.open('GET', pageurl+bustcacheparameter, true)
	page_request.send(null)
}

switchcontent.loadpage=function(page_request, header){
	var innercontent=document.getElementById(header.id.replace("-title", "")) 
	innercontent.innerHTML=switchcontent_ajax_msg 
	if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1)){
		innercontent.innerHTML=page_request.responseText
		header.ajaxstatus="loaded"
	}
}

switchcontent.getCookie=function(Name){ 
	var re=new RegExp(Name+"=[^;]+", "i");
	if (document.cookie.match(re)) 
		return document.cookie.match(re)[0].split("=")[1] 
	return ""
}

switchcontent.setCookie=function(name, value, days){
	if (typeof days!="undefined"){ 
		var expireDate = new Date()
		var expstring=expireDate.setDate(expireDate.getDate()+days)
		document.cookie = name+"="+value+"; expires="+expireDate.toGMTString()
	}
	else 
		document.cookie = name+"="+value
}