//Accordion Content script: By Dynamic Drive, at http://www.dynamicdrive.com



//Created: Jan 7th, 08'



//Version 1.3: April 3rd, 08':



//**1) Script now no longer conflicts with other JS frameworks



//**2) Adds custom oninit() and onopenclose() event handlers that fire when Accordion Content instance has initialized, plus whenever a header is opened/closed



//**3) Adds support for expanding header(s) using the URL parameter (ie: http://mysite.com/accordion.htm?headerclass=0,1)







//April 9th, 08': Fixed "defaultexpanded" setting not working when page first loads







//Version 1.4: June 4th, 08':



//**1) Added option to activate a header "mouseover" instead of the default "click"



//**2) Bug persistence not working when used with jquery 1.2.6







//Version 1.5: June 20th, 08':



//**1) Adds new "onemustopen:true/false" parameter, which lets you set whether at least one header should be open at all times (so never all closed).



//**2) Changed cookie path to site wide for persistence feature



//**3) Fixed bug so "expandedindices" parameter in oninit(headers, expandedindices) returns empty array [] instead of [-1] when no expanded headers found







//Version 1.5.1: June 27th, 08': Fixed "defaultexpanded" setting not working properly when used with jquery 1.2.6







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")

				

				 if ($(this).attr('class').indexOf('showhide') != 0 

						&& $(this).get(0).href != null 

						&& $(this).get(0).href.length > 0)

					{

						return true

					}



				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)



			}



		})



	})



	}



}