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, "") //cache value 'div1,div2,etc' within identifier[div1,div2,etc]
                        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]
                }
        }
}

}