function switchcontent(className){
	this.className=className
	this.collapsePrev=false //Default: Collapse previous content each time
	this.enablePersist=false //Default: Disable session only persistence
	//Limit type of element to scan for on page for switch contents if 2nd function parameter is defined, for efficiency sake (ie: "div")
	this.filter_content_tag=(arguments.length==2)? arguments[1].toLowerCase() : ""
	}
	
	switchcontent.prototype.setStatus=function(openHTML, closeHTML){ //PUBLIC: Set open/ closing HTML indicator. Optional
	this.statusOpen=openHTML
	this.statusClosed=closeHTML
	}
	
	switchcontent.prototype.setColor=function(openColor, closeColor){ //PUBLIC: Set open/ closing color of switch header. Optional
	this.colorOpen=openColor
	this.colorClosed=closeColor
	}
	
	switchcontent.prototype.setPersist=function(bool){ //PUBLIC: Enable/ disable persistence. Default is true.
	this.enablePersist=bool
	}
	
	switchcontent.prototype.collapsePrevious=function(bool){ //PUBLIC: Enable/ disable collapse previous content. Default is false.
	this.collapsePrev=bool
	}
	
	
	switchcontent.prototype.sweepToggle=function(setting){ //PUBLIC: Expand/ contract all contents method. (Values: "contract"|"expand")
	if (typeof this.headers!="undefined" && this.headers.length>0){ //if there are switch contents defined on the page
	for (var i=0; i<this.headers.length; i++){
	if (setting=="expand")
	this.expandcontent(this.headers[i]) //expand each content
	else if (setting=="contract")
	this.contractcontent(this.headers[i]) //contract each content
	}
	}
	}
	
	
	// -------------------------------------------------------------------
	// PUBLIC: defaultExpanded(indices_of_contents)- Set contents that should be expanded by default when the page loads.
	// Note that the persistence feature (if enabled) overrides this setting.
	// Pass in the position of the contents relative to the rest of the contents ie: defaultExpanded(0,2,3) would expand the 1st, 3rd, and 4th contents by default
	// -------------------------------------------------------------------
	
	switchcontent.prototype.defaultExpanded=function(){
	var expandedindices=[] //Array to hold indices (position) of content to be expanded by default
	//Loop through function arguments, and store each one within array
	//Two test conditions: 1) End of Arguments array, or 2) If "collapsePrev" is enabled, only the first entered index (as only 1 content can be expanded at any time)
	for (var i=0; (!this.collapsePrev && i<arguments.length) || (this.collapsePrev && i==0); i++)
	expandedindices[expandedindices.length]=arguments[i]
	this.expandedindices=expandedindices.join(",") //convert array into a string of the format: "0,2,3" for later parsing by script
	}
	
	
	//PRIVATE: Sets color of switch header.
	
	switchcontent.prototype.togglecolor=function(header, status){
	if (typeof this.colorOpen!="undefined")
	header.style.color=status
	}
	
	
	//PRIVATE: Sets status indicator HTML of switch header.
	
	switchcontent.prototype.togglestatus=function(header, status){
	if (typeof this.statusOpen!="undefined")
	header.firstChild.innerHTML=status
	}
	
	
	//PRIVATE: Contracts a content based on its corresponding header entered
	
	switchcontent.prototype.contractcontent=function(header){
	var innercontent=document.getElementById(header.id.replace("-title", "")) //Reference content for this header
	innercontent.style.display="none"
	this.togglestatus(header, this.statusClosed)
	this.togglecolor(header, this.colorClosed)
	}
	
	
	//PRIVATE: Expands a content based on its corresponding header entered
	
	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)
	}
	
	// -------------------------------------------------------------------
	// PRIVATE: toggledisplay(header)- Toggles between a content being expanded or contracted
	// If "Collapse Previous" is enabled, contracts previous open content before expanding current
	// -------------------------------------------------------------------
	
	switchcontent.prototype.toggledisplay=function(header){
	var innercontent=document.getElementById(header.id.replace("-title", "")) //Reference content for this header
	if (innercontent.style.display=="block")
	this.contractcontent(header)
	else{
	this.expandcontent(header)
	if (this.collapsePrev && typeof this.prevHeader!="undefined" && this.prevHeader.id!=header.id) // If "Collapse Previous" is enabled and there's a previous open content
	this.contractcontent(this.prevHeader) //Contract that content first
	}
	if (this.collapsePrev)
	this.prevHeader=header //Set current expanded content as the next "Previous Content"
	}
	
	
	// -------------------------------------------------------------------
	// PRIVATE: collectElementbyClass()- Searches and stores all switch contents (based on shared class name) and their headers in two arrays
	// Each content should carry an unique ID, and for its header, an ID equal to "CONTENTID-TITLE"
	// -------------------------------------------------------------------
	
	switchcontent.prototype.collectElementbyClass=function(classname){ //Returns an array containing DIVs with specified classname
	var classnameRE=new RegExp("(^|\\s+)"+classname+"($|\\s+)", "i") //regular expression to screen for classname within element
	this.headers=[], this.innercontents=[]
	if (this.filter_content_tag!="") //If user defined limit type of element to scan for to a certain element (ie: "div" only)
	var allelements=document.getElementsByTagName(this.filter_content_tag)
	else //else, scan all elements on the page!
	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){ //if header exists for this inner content
	this.headers[this.headers.length]=document.getElementById(allelements[i].id+"-title") //store reference to header intended for this inner content
	this.innercontents[this.innercontents.length]=allelements[i] //store reference to this inner content
	}
	}
	}
	}
	
	
	//PRIVATE: init()- Initializes Switch Content function (collapse contents by default unless exception is found)
	
	switchcontent.prototype.init=function(){
	var instanceOf=this
	this.collectElementbyClass(this.className) //Get all headers and its corresponding content based on shared class name of contents
	if (this.headers.length==0) return //If no headers are present (no contents to switch), just exit
	var opencontents_ids=(this.enablePersist)? ','+switchcontent.getCookie(this.className)+',' : (!this.enablePersist)? ','+this.expandedindices+',' : ""
	for (var i=0; i<this.headers.length; i++){ //BEGIN FOR LOOP (1)
	if (typeof this.statusOpen!="undefined") //If open/ closing HTML indicator is enabled/ set
	this.headers[i].innerHTML='<span class="status"></span>'+this.headers[i].innerHTML //Add a span element to original HTML to store indicator
	if (opencontents_ids.indexOf(','+i+',')!=-1){ //(2) if index "i" exists within cookie string or default-enabled string (i=position of the content to expand)
	this.expandcontent(this.headers[i]) //Expand each content per stored indices (if ""Collapse Previous" is set, only one content)
	if (this.collapsePrev) //If "Collapse Previous" set
	this.prevHeader=this.headers[i]  //Indicate the expanded content's corresponding header as the last clicked on header (for logic purpose)
	}
	else //else if no indices found in stored string
	this.contractcontent(this.headers[i]) //Contract each content by default
	this.headers[i].onclick=function(){instanceOf.toggledisplay(this)}
	}
	if (this.enablePersist)
	switchcontent.dotask(window, function(){instanceOf.rememberpluscleanup()}, "unload") //Call persistence method onunload
	}
	
	
	// -------------------------------------------------------------------
	// PRIVATE: rememberpluscleanup()- Stores the indices of content that are expanded inside session only cookie
	// If "Collapse Previous" is enabled, only 1st expanded content index is stored
	// -------------------------------------------------------------------
	
	switchcontent.prototype.rememberpluscleanup=function(){ //store index of opened ULs relative to other ULs in Tree into cookie
	var opencontents=new Array()
	for (var i=0; i<this.innercontents.length; i++){
	//If persistence enabled, content in question is expanded, and either "Collapse Previous" is disabled, or if enabled, this is the first expanded content
	if (this.enablePersist && this.innercontents[i].style.display=="block" && (!this.collapsePrev || (this.collapsePrev && opencontents.length<1)))
	opencontents[opencontents.length]=i //save the index of the opened UL (relative to the entire list of ULs) as an array element
	this.headers[i].onclick=null //Cleanup code
	}
	if (typeof this.statusOpen!="undefined") //Cleanup code
	this.statusOpen=this.statusClosed=null //Cleanup code
	switchcontent.setCookie(this.className, opencontents.join(",")) //populate cookie with indices of open contents: classname=1,2,3,etc
	}
	
	
	// -------------------------------------------------------------------
	// A few utility functions below:
	// -------------------------------------------------------------------
	
	
	switchcontent.dotask=function(target, functionref, tasktype){ //assign a function to execute to an event handler (ie: onunload)
	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"); //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 ""
	}
	
	switchcontent.setCookie=function(name, value){
	document.cookie = name+"="+value
	}