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//** Accordion Content script: By Dynamic Drive, at http://www.dynamicdrive.com
//** Created: Jan 7th, 08'. Last updated: Feb 16th, 2012 to v2.0
//Version 1.9: June 7th, 2010':
//**1) Ajax content support added, so a given header's content can be dynamically fetched from an external file and on demand.
//**2) Optimized script performance by caching header and content container references
//Version 2.0: Feb 16th, 2012':
//** 1) Added option ("scrolltoheader") to scroll to the expanded header in question after it expands (useful if a header contains long content).
var ddaccordion={
ajaxloadingmsg: '<img src="loading2.gif" /><br />Loading Content...', //customize HTML to output while Ajax content is being fetched (if applicable)
headergroup: {}, //object to store corresponding header group based on headerclass value
contentgroup: {}, //object to store corresponding content group based on headerclass value
preloadimages:function($images){
$images.each(function(){
var preloadimage=new Image()
preloadimage.src=this.src
})
},
expandone:function(headerclass, selected, scrolltoheader){ //PUBLIC function to expand a particular header
this.toggleone(headerclass, selected, "expand", scrolltoheader)
},
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=this.headergroup[headerclass]
this.contentgroup[headerclass].filter(':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 $headers=this.headergroup[headerclass]
this.contentgroup[headerclass].filter(':visible').each(function(){
$headers.eq(parseInt($(this).attr('contentindex'))).trigger("evt_accordion")
})
},
toggleone:function(headerclass, selected, optstate, scrolltoheader){ //PUBLIC function to expand/ collapse a particular header
var $targetHeader=this.headergroup[headerclass].eq(selected)
var $subcontent=this.contentgroup[headerclass].eq(selected)
if (typeof optstate=="undefined" || optstate=="expand" && $subcontent.is(":hidden") || optstate=="collapse" && $subcontent.is(":visible"))
$targetHeader.trigger("evt_accordion", [false, scrolltoheader])
},
ajaxloadcontent:function($targetHeader, $targetContent, config, callback){
var ajaxinfo=$targetHeader.data('ajaxinfo')
function handlecontent(content){ //nested function
if (content){ //if ajax content has loaded
ajaxinfo.cacheddata=content //remember ajax content
ajaxinfo.status="cached" //set ajax status to cached
if ($targetContent.queue("fx").length==0){ //if this content isn't currently expanding or collapsing
$targetContent.hide().html(content) //hide loading message, then set sub content's HTML to ajax content
ajaxinfo.status="complete" //set ajax status to complete
callback() //execute callback function- expand this sub content
}
}
if (ajaxinfo.status!="complete"){
setTimeout(function(){handlecontent(ajaxinfo.cacheddata)}, 100) //call handlecontent() again until ajax content has loaded (ajaxinfo.cacheddata contains data)
}
} //end nested function
if (ajaxinfo.status=="none"){ //ajax data hasn't been fetched yet
$targetContent.html(this.ajaxloadingmsg)
$targetContent.slideDown(config.animatespeed)
ajaxinfo.status="loading" //set ajax status to "loading"
$.ajax({
url: ajaxinfo.url, //path to external menu file
error:function(ajaxrequest){
handlecontent('Error fetching content. Server Response: '+ajaxrequest.responseText)
},
success:function(content){
content=(content=="")? " " : content //if returned content is empty, set it to "space" is content no longer returns false/empty (hasn't loaded yet)
handlecontent(content)
}
})
}
else if (ajaxinfo.status=="loading")
handlecontent(ajaxinfo.cacheddata)
},
expandit:function($targetHeader, $targetContent, config, useractivated, directclick, skipanimation, scrolltoheader){
var ajaxinfo=$targetHeader.data('ajaxinfo')
if (ajaxinfo){ //if this content should be fetched via Ajax
if (ajaxinfo.status=="none" || ajaxinfo.status=="loading")
this.ajaxloadcontent($targetHeader, $targetContent, config, function(){ddaccordion.expandit($targetHeader, $targetContent, config, useractivated, directclick)})
else if (ajaxinfo.status=="cached"){
$targetContent.html(ajaxinfo.cacheddata)
ajaxinfo.cacheddata=null
ajaxinfo.status="complete"
}
}
this.transformHeader($targetHeader, config, "expand")
$targetContent.slideDown(skipanimation? 0 : config.animatespeed, function(){
config.onopenclose($targetHeader.get(0), parseInt($targetHeader.attr('headerindex')), $targetContent.css('display'), useractivated)
if (scrolltoheader){
var sthdelay=(config["collapseprev"])? 20 : 0
clearTimeout(config.sthtimer)
config.sthtimer=setTimeout(function(){ddaccordion.scrollToHeader($targetHeader)}, sthdelay)
}
if (config.postreveal=="gotourl" && directclick){ //if revealtype is "Go to Header URL upon click", and this is a direct click on the header
var targetLink=($targetHeader.is("a"))? $targetHeader.get(0) : $targetHeader.find('a:eq(0)').get(0)
if (targetLink) //if this header is a link
setTimeout(function(){location=targetLink.href}, 200 + (scrolltoheader? 400+sthdelay : 0) ) //ignore link target, as window.open(targetLink, targetLink.target) doesn't work in FF if popup blocker enabled
}
})
},
scrollToHeader:function($targetHeader){
ddaccordion.$docbody.stop().animate({scrollTop: $targetHeader.offset().top}, 400)
},
collapseit:function($targetHeader, $targetContent, config, isuseractivated){
this.transformHeader($targetHeader, config, "collapse")
$targetContent.slideUp(config.animatespeed, function(){config.onopenclose($targetHeader.get(0), parseInt($targetHeader.attr('headerindex')), $targetContent.css('display'), isuseractivated)})
},
transformHeader:function($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.$1.split(',')
return result //returns null, [index], or [index1,index2,etc], where index are the desired selected header indices
},
getCookie:function(Name){
var re=new RegExp(Name+"=[^;]+", "i") //construct RE to search for target name/value pair
if (document.cookie.match(re)) //if cookie found
return document.cookie.match(re)[0].split("=")[1] //return its value
return null
},
setCookie:function(name, value){
document.cookie = name + "=" + value + "; path=/"
},
init:function(config){
document.write('<style type="text/css">\n')
document.write('.'+config.contentclass+'{display: none}\n') //generate CSS to hide contents
document.write('a.hiddenajaxlink{display: none}\n') //CSS class to hide ajax link
document.write('<\/style>')
jQuery(document).ready(function($){
ddaccordion.urlparamselect(config.headerclass)
var persistedheaders=ddaccordion.getCookie(config.headerclass)
ddaccordion.headergroup[config.headerclass]=$('.'+config.headerclass) //remember header group for this accordion
ddaccordion.contentgroup[config.headerclass]=$('.'+config.contentclass) //remember content group for this accordion
ddaccordion.$docbody=(window.opera)? (document.compatMode=="CSS1Compat"? jQuery('html') : jQuery('body')) : jQuery('html,body')
var $headers=ddaccordion.headergroup[config.headerclass]
var $subcontents=ddaccordion.contentgroup[config.headerclass]
config.cssclass={collapse: config.toggleclass[0], expand: config.toggleclass[1]} //store expand and contract CSS classes as object properties
config.revealtype=config.revealtype || "click"
config.revealtype=config.revealtype.replace(/mouseover/i, "mouseenter")
if (config.revealtype=="clickgo"){
config.postreveal="gotourl" //remember added action
config.revealtype="click" //overwrite revealtype to "click" keyword
}
if (typeof config.togglehtml=="undefined")
config.htmlsetting={location: "none"}
else
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]
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]
$headers.each(function(index){ //loop through all headers
var $header=$(this)
if (/(prefix)|(suffix)/i.test(config.htmlsetting.location) && $header.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)
}
$header.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 $hiddenajaxlink=$subcontent.find('a.hiddenajaxlink:eq(0)') //see if this content should be loaded via ajax
if ($hiddenajaxlink.length==1){
$header.data('ajaxinfo', {url:$hiddenajaxlink.attr('href'), cacheddata:null, status:'none'}) //store info about this ajax content inside header
}
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)
ddaccordion.expandit($header, $subcontent, config, false, false, !config.animatedefault) //3rd last param sets 'isuseractivated' parameter, 2nd last sets isdirectclick, last sets skipanimation param
lastexpanded={$header:$header, $content:$subcontent}
} //end check
else{
$subcontent.hide()
config.onopenclose($header.get(0), parseInt($header.attr('headerindex')), $subcontent.css('display'), false) //Last Boolean value sets 'isuseractivated' parameter
ddaccordion.transformHeader($header, config, "collapse")
}
})
//if (config["scrolltoheader"] && lastexpanded.$header)
//ddaccordion.scrollToHeader(lastexpanded.$header)
$headers.bind("evt_accordion", function(e, isdirectclick, scrolltoheader){ //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), $subcontent, config, true, isdirectclick, false, scrolltoheader) //2nd last param sets 'isuseractivated' parameter
if (config["collapseprev"] && lastexpanded.$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 if (!config["onemustopen"] || config["onemustopen"] && lastexpanded.$header && $(this).get(0)!=lastexpanded.$header.get(0)){
ddaccordion.collapseit($(this), $subcontent, config, true) //Last Boolean value sets 'isuseractivated' parameter
}
})
$headers.bind(config.revealtype, function(){
if (config.revealtype=="mouseenter"){
clearTimeout(config.revealdelay)
var headerindex=parseInt($(this).attr("headerindex"))
config.revealdelay=setTimeout(function(){ddaccordion.expandone(config["headerclass"], headerindex, config.scrolltoheader)}, config.mouseoverdelay || 0)
}
else{
$(this).trigger("evt_accordion", [true, config.scrolltoheader]) //last parameter indicates this is a direct click on the header
return false //cancel default click behavior
}
})
$headers.bind("mouseleave", function(){
clearTimeout(config.revealdelay)
})
config.oninit($headers.get(), expandedindices)
$(window).bind('unload', function(){ //clean up and persist on page unload
$headers.unbind()
var expandedindices=[]
$subcontents.filter(':visible').each(function(index){ //get indices of expanded headers
expandedindices.push($(this).attr('contentindex'))
})
if (config.persiststate==true && $headers.length>0){ //persist state?
expandedindices=(expandedindices.length==0)? '-1c' : expandedindices //No contents expanded, indicate that with dummy '-1c' value?
ddaccordion.setCookie(config.headerclass, expandedindices)
}
})
})
}
}
//preload any images defined inside ajaxloadingmsg variable
ddaccordion.preloadimages(jQuery(ddaccordion.ajaxloadingmsg).filter('img'))