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



//Created: Jan 7th, 08'







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 _$headers=_$('.'+headerclass)



		_$('.'+this.contentclassname[headerclass]+':hidden').each(function(){



			_$headers.eq(parseInt(_$(this).attr('contentindex'))).click()



		})



	},







	collapseall:function(headerclass){ //PUBLIC function to collapse all headers based on their shared CSS classname



		var _$headers=_$('.'+headerclass)



		_$('.'+this.contentclassname[headerclass]+':visible').each(function(){



			_$headers.eq(parseInt(_$(this).attr('contentindex'))).click()



		})



	},







	toggleone:function(headerclass, selected, optstate){ //PUBLIC function to expand/ collapse a particular header



		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.click()



	},







	expandit:function(_$targetHeader, _$targetContent, config){



		_$targetContent.slideDown(config.animatespeed)



		this.transformHeader(_$targetHeader, config, "expand")



	},







	collapseit:function(_$targetHeader, _$targetContent, config){



		_$targetContent.slideUp(config.animatespeed)



		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)



	},







	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



	},







	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>')



	



	_$(document).ready(function(){







		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.htmlsetting={location: config.togglehtml[0], collapse: config.togglehtml[1], expand: config.togglehtml[2]} //store HTML settings as object properties



		var lastexpanded={} //object to hold reference to last expanded header and content (jquery objects)



		var expandedindices=(config.persiststate)? ddaccordion.getCookie(config.headerclass) : config.defaultexpanded



		expandedindices=(typeof expandedindices=='string')? expandedindices.replace(/c/ig, '').split(',') : config.defaultexpanded //test for valid cookie ('string'), otherwise (null, or 1st page load), default to defaultexpanded setting



		var _$subcontents=_$('.'+config["contentclass"])



		if (config["collapseprev"] && expandedindices.length>1)



			expandedindices=[expandedindices.pop()] //return last array element as an array (for sake of jQuery.inArray())



		



		



		_$('.'+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)



			if (jQuery.inArray(index, expandedindices)!=-1){ //check for headers that should be expanded automatically



				if (config.animatedefault==false)



					_$subcontent.show()



				ddaccordion.expandit(_$(this), _$subcontent, config)



				lastexpanded={_$header:_$(this), _$content:_$subcontent}



			}  //end check



			else{



				_$subcontent.hide()



				ddaccordion.transformHeader(_$(this), config, "collapse")



			}



		})



		_$('.'+config["headerclass"]).click(function(){ //assign behavior when headers are clicked on



				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)



					if (config["collapseprev"] && lastexpanded._$header && _$(this).get(0)!=lastexpanded._$header.get(0)){ //collapse previous content?



						ddaccordion.collapseit(lastexpanded._$header, lastexpanded._$content, config)



					}



					lastexpanded={_$header:_$(this), _$content:_$subcontent}



				}



				else{



					ddaccordion.collapseit(_$(this), _$subcontent, config)



				}



				return false



 	})



		_$(window).bind('unload', function(){ //clean up and persist on page unload



			_$('.'+config["headerclass"]).unbind('click')



			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)



			}



		})



	})



	}



}