var ddaccordion = {
	
	contentclassname:{}, //object to store corresponding contentclass name based on headerclass
	
	expandone:function(headerclass, selected){ //PUBLIC function to expand a particular header
	this.toggleone(headerclass, selected, "expand")
	},
	
	collapseone:function(headerclass, selected){ //PUBLIC function to collapse a particular header
	this.toggleone(headerclass, selected, "collapse")
	},
	
	expandall:function(headerclass){ //PUBLIC function to expand all headers based on their shared CSS classname
	var $=jQuery
	var $headers=$('.'+headerclass)
	$('.'+this.contentclassname[headerclass]+':hidden').each(function(){
	$headers.eq(parseInt($(this).attr('contentindex'))).trigger("evt_accordion")
	})
	},
	
	collapseall:function(headerclass){ //PUBLIC function to collapse all headers based on their shared CSS classname
	var $=jQuery
	var $headers=$('.'+headerclass)
	$('.'+this.contentclassname[headerclass]+':visible').each(function(){
	$headers.eq(parseInt($(this).attr('contentindex'))).trigger("evt_accordion")
	})
	},
	
	toggleone:function(headerclass, selected, optstate){ //PUBLIC function to expand/ collapse a particular header
	var $=jQuery
	var $targetHeader=$('.'+headerclass).eq(selected)
	var $subcontent=$('.'+this.contentclassname[headerclass]).eq(selected)
	if (typeof optstate=="undefined" || optstate=="expand" && $subcontent.is(":hidden") || optstate=="collapse" && $subcontent.is(":visible"))
	$targetHeader.trigger("evt_accordion")
	},
	
	expandit:function($targetHeader, $targetContent, config, useractivated){
	$targetContent.slideDown(config.animatespeed, function(){config.onopenclose($targetHeader.get(0), parseInt($targetHeader.attr('headerindex')), $targetContent.css('display'), useractivated)})
	this.transformHeader($targetHeader, config, "expand")
	},
	
	collapseit:function($targetHeader, $targetContent, config, isuseractivated){
	$targetContent.slideUp(config.animatespeed, function(){config.onopenclose($targetHeader.get(0), parseInt($targetHeader.attr('headerindex')), $targetContent.css('display'), isuseractivated)})
	this.transformHeader($targetHeader, config, "collapse")
	},
	
	transformHeader:function($targetHeader, config, state){
	$targetHeader.addClass((state=="expand")? config.cssclass.expand : config.cssclass.collapse) //alternate btw "expand" and "collapse" CSS classes
	.removeClass((state=="expand")? config.cssclass.collapse : config.cssclass.expand)
	if (config.htmlsetting.location=='src'){ //Change header image (assuming header is an image)?
	$targetHeader=($targetHeader.is("img"))? $targetHeader : $targetHeader.find('img').eq(0) //Set target to either header itself, or first image within header
	$targetHeader.attr('src', (state=="expand")? config.htmlsetting.expand : config.htmlsetting.collapse) //change header image
	}
	else if (config.htmlsetting.location=="prefix") //if change "prefix" HTML, locate dynamically added ".accordprefix" span tag and change it
	$targetHeader.find('.accordprefix').html((state=="expand")? config.htmlsetting.expand : config.htmlsetting.collapse)
	else if (config.htmlsetting.location=="suffix")
	$targetHeader.find('.accordsuffix').html((state=="expand")? config.htmlsetting.expand : config.htmlsetting.collapse)
	},
	
	urlparamselect:function(headerclass){
	var result=window.location.search.match(new RegExp(headerclass+"=((\\d+)(,(\\d+))*)", "i")) //check for "?headerclass=2,3,4" in URL
	if (result!=null)
	result=RegExp.$1.split(',')
	return result //returns null, [index], or [index1,index2,etc], where index are the desired selected header indices
	},
	
	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 null
	},
	
	setCookie:function(name, value){
	document.cookie = name + "=" + value + "; path=/"
	},
	
	init:function(config){
	document.write('<style type="text/css">\n')
	document.write('.'+config.contentclass+'{display: none}\n') //generate CSS to hide contents
	document.write('<\/style>')
	jQuery(document).ready(function($){
	ddaccordion.urlparamselect(config.headerclass)
	var persistedheaders=ddaccordion.getCookie(config.headerclass)
	ddaccordion.contentclassname[config.headerclass]=config.contentclass //remember contentclass name based on headerclass
	config.cssclass={collapse: config.toggleclass[0], expand: config.toggleclass[1]} //store expand and contract CSS classes as object properties
	config.revealtype=/^(click)|(mouseover)$/i.test(config.revealtype)? config.revealtype.replace(/mouseover/i, "mouseenter") : "click"
	config.htmlsetting={location: config.togglehtml[0], collapse: config.togglehtml[1], expand: config.togglehtml[2]} //store HTML settings as object properties
	config.oninit=(typeof config.oninit=="undefined")? function(){} : config.oninit //attach custom "oninit" event handler
	config.onopenclose=(typeof config.onopenclose=="undefined")? function(){} : config.onopenclose //attach custom "onopenclose" event handler
	var lastexpanded={} //object to hold reference to last expanded header and content (jquery objects)
	var expandedindices=ddaccordion.urlparamselect(config.headerclass) || ((config.persiststate && persistedheaders!=null)? persistedheaders : config.defaultexpanded)
	if (typeof expandedindices=='string') //test for string value (exception is config.defaultexpanded, which is an array)
	expandedindices=expandedindices.replace(/c/ig, '').split(',') //transform string value to an array (ie: "c1,c2,c3" becomes [1,2,3]
	var $subcontents=$('.'+config["contentclass"])
	if (expandedindices.length==1 && expandedindices[0]=="-1") //check for expandedindices value of [-1], indicating persistence is on and no content expanded
	expandedindices=[]
	if (config["collapseprev"] && expandedindices.length>1) //only allow one content open?
	expandedindices=[expandedindices.pop()] //return last array element as an array (for sake of jQuery.inArray())
	if (config["onemustopen"] && expandedindices.length==0) //if at least one content should be open at all times and none are, open 1st header
	expandedindices=[0]
	$('.'+config["headerclass"]).each(function(index){ //loop through all headers
	if (/(prefix)|(suffix)/i.test(config.htmlsetting.location) && $(this).html()!=""){ //add a SPAN element to header depending on user setting and if header is a container tag
	$('<span class="accordprefix"></span>').prependTo(this)
	$('<span class="accordsuffix"></span>').appendTo(this)
	}
	$(this).attr('headerindex', index+'h') //store position of this header relative to its peers
	$subcontents.eq(index).attr('contentindex', index+'c') //store position of this content relative to its peers
	var $subcontent=$subcontents.eq(index)
	var needle=(typeof expandedindices[0]=="number")? index : index+'' //check for data type within expandedindices array- index should match that type
	if (jQuery.inArray(needle, expandedindices)!=-1){ //check for headers that should be expanded automatically (convert index to string first)
	if (config.animatedefault==false)
	$subcontent.show()
	ddaccordion.expandit($(this), $subcontent, config, false) //Last Boolean value sets 'isuseractivated' parameter
	lastexpanded={$header:$(this), $content:$subcontent}
	}  //end check
	else{
	$subcontent.hide()
	config.onopenclose($(this).get(0), parseInt($(this).attr('headerindex')), $subcontent.css('display'), false) //Last Boolean value sets 'isuseractivated' parameter
	ddaccordion.transformHeader($(this), config, "collapse")
	}
	})
	$('.'+config["headerclass"]).bind("evt_accordion", function(){ //assign custom event handler that expands/ contacts a header
	var $subcontent=$subcontents.eq(parseInt($(this).attr('headerindex'))) //get subcontent that should be expanded/collapsed
	if ($subcontent.css('display')=="none"){
	ddaccordion.expandit($(this), $subcontent, config, true) //Last Boolean value sets 'isuseractivated' parameter
	if (config["collapseprev"] && lastexpanded.$header && $(this).get(0)!=lastexpanded.$header.get(0)){ //collapse previous content?
	ddaccordion.collapseit(lastexpanded.$header, lastexpanded.$content, config, true) //Last Boolean value sets 'isuseractivated' parameter
	}
	lastexpanded={$header:$(this), $content:$subcontent}
	}
	else{
	ddaccordion.collapseit($(this), $subcontent, config, true) //Last Boolean value sets 'isuseractivated' parameter
	}
	})
	$('.'+config["headerclass"]).bind(config.revealtype, function(){
	if (config.revealtype=="mouseenter"){
	ddaccordion.expandone(config["headerclass"], parseInt($(this).attr("headerindex")))
	}
	else{
	$(this).trigger("evt_accordion")
	return false //cancel default click behavior
	}
	})
	config.oninit($('.'+config["headerclass"]).get(), expandedindices)
	$(window).bind('unload', function(){ //clean up and persist on page unload
	$('.'+config["headerclass"]).unbind()
	var expandedindices=[]
	$('.'+config["contentclass"]+":visible").each(function(index){ //get indices of expanded headers
	expandedindices.push($(this).attr('contentindex'))
	})
	if (config.persiststate==true){ //persist state?
	expandedindices=(expandedindices.length==0)? '-1c' : expandedindices //No contents expanded, indicate that with dummy '-1c' value?
	ddaccordion.setCookie(config.headerclass, expandedindices)
	}
	})
	})
	}
}
	
ddaccordion.init({
	headerclass: "submenuheader", 
	contentclass: "submenu",
	revealtype: "click", 
	collapseprev: true, 
	defaultexpanded: [], 
	onemustopen: false, 
	animatedefault: false, 
	persiststate: true, 
	toggleclass: ["", ""], 
	togglehtml: ["suffix", "<img src='/images/portal/menu_kapali.gif' class='statusicon' />", "<img src='/images/portal/menu_acik.gif' class='statusicon' />"], 
	animatespeed: "normal", 
	oninit:function(headers, expandedindices){},
	onopenclose:function(header, index, state, isuseractivated) {}
})