//** Animated Collapsible DIV v2.0- (c) Dynamic Drive DHTML code library: http://www.dynamicdrive.com.
//** May 24th, 08'- Script rewritten and updated to 2.0.
//** June 4th, 08'- Version 2.01: Bug fix to work with jquery 1.2.6 (which changed the way attr() behaves).
 
var animatedcollapse={
divholders: {}, //structure: {div.id, div.attrs, div.$divref}
divgroups: {}, //structure: {groupname.count, groupname.lastactivedivid}
lastactiveingroup: {}, //structure: {lastactivediv.id}

show:function(divids){ //public method
 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){ //public method
 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){ //public method
 this.showhide(divid, "toggle")
},

addDiv:function(divid, attrstring){ //public function
 this.divholders[divid]=({id: divid, $divref: null, attrs: attrstring})
 this.divholders[divid].getAttr=function(name){ //assign getAttr() function to each divholder object
 var attr=new RegExp(name+"=([^,]+)", "i") //get name/value config pair (ie: width=400px,)
 return (attr.test(this.attrs) && parseInt(RegExp.$1)!=0)? RegExp.$1 : null //return value portion (string), or 0 (false) if none found
 }
},

showhide:function(divid, action){
 var $divref=this.divholders[divid].$divref //reference collapsible DIV
 if (this.divholders[divid] && $divref.length==1){ //if DIV exists
 var targetgroup=this.divgroups[$divref.attr('groupname')] //find out which group DIV belongs to (if any)
 if ($divref.attr('groupname') && targetgroup.count>1 && (action=="show" || action=="toggle" && $divref.css('display')=='none')){ //If current DIV belongs to a group
 if (targetgroup.lastactivedivid && targetgroup.lastactivedivid!=divid) //if last active DIV is set
 this.slideengine(targetgroup.lastactivedivid, 'hide') //hide last active DIV within group first
 this.slideengine(divid, 'show')
 targetgroup.lastactivedivid=divid //remember last active DIV
 }
 else{
 this.slideengine(divid, action)
 }
 }
},

slideengine:function(divid, action){
 var $divref=this.divholders[divid].$divref
 if (this.divholders[divid] && $divref.length==1){ //if this DIV exists
 var animateSetting={height: action}
 if ($divref.attr('fade'))
 animateSetting.opacity=action
 $divref.animate(animateSetting, $divref.attr('speed')? parseInt($divref.attr('speed')) : 500)
 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($){
 var persistopenids=ac.getCookie('acopendivids') //Get list of div ids that should be expanded due to persistence ('div1,div2,etc')
 var groupswithpersist=ac.getCookie('acgroupswithpersist') //Get list of group names that have 1 or more divs with "persist" attribute defined
 if (persistopenids!=null) //if cookie isn't null (is null if first time page loads, and cookie hasnt been set yet)
 persistopenids=(persistopenids=='nada')? [] : persistopenids.split(',') //if no divs are persisted, set to empty array, else, array of div ids
 groupswithpersist=(groupswithpersist==null || groupswithpersist=='nada')? [] : groupswithpersist.split(',') //Get list of groups with divs that are persisted
 jQuery.each(ac.divholders, function(){ //loop through each collapsible DIV object
 this.$divref=$('#'+this.id)
 if ((this.getAttr('persist') || jQuery.inArray(this.getAttr('group'), groupswithpersist)!=-1) && persistopenids!=null){
 var cssdisplay=(jQuery.inArray(this.id, persistopenids)!=-1)? 'block' : 'none'
 }
 else{
 var cssdisplay=this.getAttr('hide')? 'none' : null
 }
 this.$divref.css(ac.generatemap(['height', this.getAttr('height')], ['display', cssdisplay]))
 this.$divref.attr(ac.generatemap(['groupname', this.getAttr('group')], ['fade', this.getAttr('fade')], ['speed', this.getAttr('speed')]))
 if (this.getAttr('group')){ //if this DIV has the "group" attr defined
 var targetgroup=ac.divgroups[this.getAttr('group')] || (ac.divgroups[this.getAttr('group')]={}) //Get settings for this group, or if it no settings exist yet, create blank object to store them in
 targetgroup.count=(targetgroup.count||0)+1 //count # of DIVs within this group
 if (!targetgroup.lastactivedivid && this.$divref.css('display')!='none' || cssdisplay=="block") //if this DIV was open by default or should be open due to persistence
 targetgroup.lastactivedivid=this.id //remember this DIV as the last "active" DIV (this DIV will be expanded)
 this.$divref.css({display:'none'}) //hide any DIV that's part of said group for now
 }
 }) //end divholders.each
 jQuery.each(ac.divgroups, function(){ //loop through each group
 if (this.lastactivedivid)
 ac.divholders[this.lastactivedivid].$divref.show() //and show last "active" DIV within each group (one that should be expanded)
 })
 var $allcontrols=$('*[rel]').filter('[@rel^="collapse-"], [@rel^="expand-"], [@rel^="toggle-"]') //get all elements on page with rel="collapse-", "expand-" and "toggle-"
 var controlidentifiers=/(collapse-)|(expand-)|(toggle-)/
 $allcontrols.each(function(){
 $(this).click(function(){
 var relattr=this.getAttribute('rel')
 var divid=relattr.replace(controlidentifiers, '')
 var doaction=(relattr.indexOf("collapse-")!=-1)? "hide" : (relattr.indexOf("expand-")!=-1)? "show" : "toggle"
 return ac.showhide(divid, doaction)
 }) //end control.click
 })// end control.each
 $(window).bind('unload', function(){
 ac.uninit()
 })
 }) //end doc.ready()
},

uninit:function(){
 var opendivids='', groupswithpersist=''
 jQuery.each(this.divholders, function(){
 if (this.$divref.css('display')!='none'){
 opendivids+=this.id+',' //store ids of DIVs that are expanded when page unloads: 'div1,div2,etc'
 }
 if (this.getAttr('group') && this.getAttr('persist'))
 groupswithpersist+=this.getAttr('group')+',' //store groups with which at least one DIV has persistance enabled: 'group1,group2,etc'
 })
 opendivids=(opendivids=='')? 'nada' : opendivids.replace(/,$/, '')
 groupswithpersist=(groupswithpersist=='')? 'nada' : groupswithpersist.replace(/,$/, '')
 this.setCookie('acopendivids', opendivids)
 this.setCookie('acgroupswithpersist', groupswithpersist)
},

getCookie:function(Name){
 var re=new RegExp(Name+"=[^;]*", "i"); //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, days){
 if (typeof days!="undefined"){ //if set persistent cookie
 var expireDate = new Date()
 expireDate.setDate(expireDate.getDate()+days)
 document.cookie = name+"="+value+"; path=/; expires="+expireDate.toGMTString()
 }
 else //else if this is a session only cookie
 document.cookie = name+"="+value+"; path=/"
}

}