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

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.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", ""))
 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.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.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
}