var animatedcollapse={
divholders: {}, 
divgroups: {}, 
lastactiveingroup: {}, 
preloadimages: [],

show:function(divids){ 
	if (typeof divids=="object"){
		for (var i=0; i<divids.length; i++)
			this.showhide(divids[i], "show")
	}
	else
		this.showhide(divids, "show")
},

hide:function(divids){ 
	if (typeof divids=="object"){
		for (var i=0; i<divids.length; i++)
			this.showhide(divids[i], "hide")
	}
	else
		this.showhide(divids, "hide")
},

toggle:function(divid){ 
	if (typeof divid=="object")
		divid=divid[0]
	this.showhide(divid, "toggle")
},

addDiv:function(divid, attrstring){ 
	this.divholders[divid]=({id: divid, $divref: null, attrs: attrstring})
	this.divholders[divid].getAttr=function(name){ 
		var attr=new RegExp(name+"=([^,]+)", "i") 
		return (attr.test(this.attrs) && parseInt(RegExp.$1)!=0)? RegExp.$1 : null 
	}
	this.currentid=divid 
	return this
},

showhide:function(divid, action){
	var $divref=this.divholders[divid].$divref 
	if (this.divholders[divid] && $divref.length==1){ 
		var targetgroup=this.divgroups[$divref.attr('groupname')] 
		if ($divref.attr('groupname') && targetgroup.count>1 && (action=="show" || action=="toggle" && $divref.css('display')=='none')){ 
			if (targetgroup.lastactivedivid && targetgroup.lastactivedivid!=divid) 
				this.slideengine(targetgroup.lastactivedivid, 'hide') 
				this.slideengine(divid, 'show')
			targetgroup.lastactivedivid=divid 
		}
		else{
			this.slideengine(divid, action)
		}
	}
},

slideengine:function(divid, action){
	var $divref=this.divholders[divid].$divref
	var $togglerimage=this.divholders[divid].$togglerimage
	if (this.divholders[divid] && $divref.length==1){ 
		var animateSetting={height: action}
		if ($divref.attr('fade'))
			animateSetting.opacity=action
		$divref.animate(animateSetting, $divref.attr('speed')? parseInt($divref.attr('speed')) : 500, function(){
			if ($togglerimage){
				$togglerimage.attr('src', ($divref.css('display')=="none")? $togglerimage.data('srcs').closed : $togglerimage.data('srcs').open)
			}
			if (animatedcollapse.ontoggle){
				try{
					animatedcollapse.ontoggle(jQuery, $divref.get(0), $divref.css('display'))
				}
				catch(e){
					alert("An error exists inside your \"ontoggle\" function:\n\n"+e+"\n\nAborting execution of function.")
				}
			}
		})
		return false
	}
},

generatemap:function(){
	var map={}
	for (var i=0; i<arguments.length; i++){
		if (arguments[i][1]!=null){ 
			map[arguments[i][0]]=arguments[i][1]
		}
	}
	return map
},

init:function(){
	var ac=this
	jQuery(document).ready(function($){
		animatedcollapse.ontoggle=animatedcollapse.ontoggle || null
		var urlparamopenids=animatedcollapse.urlparamselect() 
		var persistopenids=ac.getCookie('acopendivids') 
		var groupswithpersist=ac.getCookie('acgroupswithpersist') 
		if (persistopenids!=null) 
			persistopenids=(persistopenids=='nada')? [] : persistopenids.split(',') 
		groupswithpersist=(groupswithpersist==null || groupswithpersist=='nada')? [] : groupswithpersist.split(',') 
		jQuery.each(ac.divholders, function(){ 
			this.$divref=$('#'+this.id)
			if ((this.getAttr('persist') || jQuery.inArray(this.getAttr('group'), groupswithpersist)!=-1) && persistopenids!=null){ 
				var cssdisplay=(jQuery.inArray(this.id, persistopenids)!=-1)? 'block' : 'none'
			}
			else{
				var cssdisplay=this.getAttr('hide')? 'none' : null
			}
			if (urlparamopenids[0]=="all" || jQuery.inArray(this.id, urlparamopenids)!=-1){ 
				cssdisplay='block' 
			}
			else if (urlparamopenids[0]=="none"){
				cssdisplay='none' 
			}
			this.$divref.css(ac.generatemap(['height', this.getAttr('height')], ['display', cssdisplay]))
			this.$divref.attr(ac.generatemap(['groupname', this.getAttr('group')], ['fade', this.getAttr('fade')], ['speed', this.getAttr('speed')]))
			if (this.getAttr('group')){ 
				var targetgroup=ac.divgroups[this.getAttr('group')] || (ac.divgroups[this.getAttr('group')]={}) 
				targetgroup.count=(targetgroup.count||0)+1 
				if (jQuery.inArray(this.id, urlparamopenids)!=-1){ 
					targetgroup.lastactivedivid=this.id 
					targetgroup.overridepersist=1 
				}
				if (!targetgroup.lastactivedivid && this.$divref.css('display')!='none' || cssdisplay=="block" && typeof targetgroup.overridepersist=="undefined") 								
					targetgroup.lastactivedivid=this.id 
				this.$divref.css({display:'none'}) 
			}
		}) 
		jQuery.each(ac.divgroups, function(){ 
			if (this.lastactivedivid && urlparamopenids[0]!="none") 
				ac.divholders[this.lastactivedivid].$divref.show()
		})
		if (animatedcollapse.ontoggle){
			jQuery.each(ac.divholders, function(){ 
				animatedcollapse.ontoggle(jQuery, this.$divref.get(0), this.$divref.css('display'))
			})
		}
 		
		var $allcontrols=$('a[rel]').filter('[rel^="collapse["], [rel^="expand["], [rel^="toggle["]') 
		$allcontrols.each(function(){ 
			this._divids=this.getAttribute('rel').replace(/(^\w+)|(\s+)/g, "").replace(/[\[\]']/g, "") 
			if (this.getElementsByTagName('img').length==1 && ac.divholders[this._divids]){ 
				animatedcollapse.preloadimage(this.getAttribute('data-openimage'), this.getAttribute('data-closedimage')) 
				$togglerimage=$(this).find('img').eq(0).data('srcs', {open:this.getAttribute('data-openimage'), closed:this.getAttribute('data-closedimage')}) 
				ac.divholders[this._divids].$togglerimage=$(this).find('img').eq(0) 
				ac.divholders[this._divids].$togglerimage.attr('src', (ac.divholders[this._divids].$divref.css('display')=="none")? $togglerimage.data('srcs').closed : $togglerimage.data('srcs').open)
			}
			$(this).click(function(){ 
				var relattr=this.getAttribute('rel')
				var divids=(this._divids=="")? [] : this._divids.split(',')  
				if (divids.length>0){
					animatedcollapse[/expand/i.test(relattr)? 'show' : /collapse/i.test(relattr)? 'hide' : 'toggle'](divids) 
					return false
				}
			}) 
		})

		$(window).bind('unload', function(){
			ac.uninit()
		})
	}) 
},

uninit:function(){
	var opendivids='', groupswithpersist=''
	jQuery.each(this.divholders, function(){
		if (this.$divref.css('display')!='none'){
			opendivids+=this.id+',' 
		}
		if (this.getAttr('group') && this.getAttr('persist'))
			groupswithpersist+=this.getAttr('group')+',' 
	})
	opendivids=(opendivids=='')? 'nada' : opendivids.replace(/,$/, '')
	groupswithpersist=(groupswithpersist=='')? 'nada' : groupswithpersist.replace(/,$/, '')
	this.setCookie('acopendivids', opendivids)
	this.setCookie('acgroupswithpersist', groupswithpersist)
},

getCookie:function(Name){ 
	var re=new RegExp(Name+"=[^;]*", "i"); 
	if (document.cookie.match(re)) 
		return document.cookie.match(re)[0].split("=")[1] 
	return null
},

setCookie:function(name, value, days){
	if (typeof days!="undefined"){ 
		var expireDate = new Date()
		expireDate.setDate(expireDate.getDate()+days)
		document.cookie = name+"="+value+"; path=/; expires="+expireDate.toGMTString()
	}
	else 
		document.cookie = name+"="+value+"; path=/"
},

urlparamselect:function(){
	window.location.search.match(/expanddiv=([\w\-_,]+)/i) 
	return (RegExp.$1!="")? RegExp.$1.split(",") : []
},

preloadimage:function(){
	var preloadimages=this.preloadimages
	for (var i=0; i<arguments.length; i++){
		if (arguments[i] && arguments[i].length>0){
			preloadimages[preloadimages.length]=new Image()
			preloadimages[preloadimages.length-1].src=arguments[i]
		}
	}
}

}