function switchcontent(className)
{
this.className=className
this.collapsePrev=false
this.enablePersist=false
this.filter_content_tag=(arguments.length==2)? arguments[1].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)
{
this.enablePersist=bool
}

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
var opencontents_ids=(this.enablePersist)? ','+switchcontent.getCookie(this.className)+',' : (!this.enablePersist)? ','+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)}
  }
if (this.enablePersist)
switchcontent.dotask(window, function()
  {instanceOf.rememberpluscleanup()}, "unload")
}

switchcontent.prototype.rememberpluscleanup=function()
{
var opencontents=new Array()
for (var i=0; i<this.innercontents.length; i++)
  {
  if (this.enablePersist && this.innercontents[i].style.display=="block" && (!this.collapsePrev || (this.collapsePrev && opencontents.length<1)))
  opencontents[opencontents.length]=i
  this.headers[i].onclick=null
}
if (typeof this.statusOpen!="undefined")
this.statusOpen=this.statusClosed=null
switchcontent.setCookie(this.className, opencontents.join(","))
}


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)
{
document.cookie = name+"="+value
}