/* Horizontal Accordion script
* Created: Oct 27th, 2009. This notice must stay intact for usage 
* Author: Dynamic Drive at http://www.dynamicdrive.com/
* Visit http://www.dynamicdrive.com/ for full source code
*/
var haccordion={
//customize loading message if accordion markup is fetched via Ajax:
ajaxloadingmsg: '<div style="margin: 1em; font-weight: bold"><img src="ajaxloadr.gif" style="vertical-align: middle" /></div>',
accordioninfo: {}, //class that holds config information of each haccordion instance
expandli:function(accordionid, targetli){
var config=haccordion.accordioninfo[accordionid]
var $targetli=(typeof targetli=="number")? config.$targetlis.eq(targetli) : (typeof targetli=="string")? jQuery('#'+targetli) : jQuery(targetli)
if (typeof config.$lastexpanded!="undefined") //targetli may be an index, ID string, or DOM reference to LI
config.$lastexpanded.stop().animate({width:config.paneldimensions.peekw}, config.speed) //contract last opened content
$targetli.stop().animate({width:$targetli.data('hpaneloffsetw')}, config.speed) //expand current content
config.$lastexpanded=$targetli
},
urlparamselect:function(accordionid){
var result=window.location.search.match(new RegExp(accordionid+"=(\\d+)", "i")) //check for "?accordionid=index" in URL
if (result!=null)
result=parseInt(RegExp.$1)+"" //return value as string so 0 doesn't test for false
return result //returns null or index, where index is the desired selected hcontent index
},
getCookie:function(Name){ 
var re=new RegExp(Name+"=[^;]+", "i") //construct RE to search for target name/value pair
if (document.cookie.match(re)) //if cookie found
return document.cookie.match(re)[0].split("=")[1] //return its value
return null
},
setCookie:function(name, value){
document.cookie = name + "=" + value + "; path=/"
},
loadexternal:function($, config){ //function to fetch external page containing the entire accordion content markup
var $hcontainer=$('#'+config.ajaxsource.container).html(this.ajaxloadingmsg)
$.ajax({
url: config.ajaxsource.path, //path to external content
async: true,
error:function(ajaxrequest){
$hcontainer.html('Error fetching content.<br />Server Response: '+ajaxrequest.responseText)
},
success:function(content){
$hcontainer.html(content)
haccordion.init($, config)
}
})
},
init:function($, config){
haccordion.accordioninfo[config.accordionid]=config //cache config info for this accordion
var $targetlis=$('#'+config.accordionid).find('ul:eq(0) > li') //find top level LIs
config.$targetlis=$targetlis
config.selectedli=config.selectedli || [] //set default selectedli option
config.speed=config.speed || "normal" //set default speed
$targetlis.each(function(i){
var $target=$(this).data('pos', i) //give each li an index #
$target.data('hpaneloffsetw', $target.find('.hpanel:eq(0)').outerWidth()) //get offset width of each .hpanel DIV (config.dimensions.fullw + any DIV padding)
$target.mouseenter(function(){
haccordion.expandli(config.accordionid, this)
config.$lastexpanded=$(this)
})
if (config.collapsecurrent){ //if previous content should be contracted when expanding current
$target.mouseleave(function(){
$(this).stop().animate({width:config.paneldimensions.peekw}, config.speed) //contract previous content
})
}				
}) //end $targetlis.each
var selectedli=haccordion.urlparamselect(config.accordionid) || ((config.selectedli[1] && haccordion.getCookie(config.accordionid))? parseInt(haccordion.getCookie(config.accordionid)) : config.selectedli[0])
selectedli=parseInt(selectedli)
if (selectedli>=0 && selectedli<config.$targetlis.length){ //if selectedli index is within range
config.$lastexpanded=$targetlis.eq(selectedli)
config.$lastexpanded.css('width', config.$lastexpanded.data('hpaneloffsetw')) //expand selected li
}
$(window).bind('unload', function(){ //clean up and persist on page unload
haccordion.uninit($, config)
}) //end window.onunload
},
uninit:function($, config){
var $targetlis=config.$targetlis
var expandedliindex=-1 //index of expanded content to remember (-1 indicates non)
$targetlis.each(function(){
var $target=$(this)
$target.unbind()
if ($target.width()==$target.data('hpaneloffsetw'))
expandedliindex=$target.data('pos')
})
if (config.selectedli[1]==true) //enable persistence?
haccordion.setCookie(config.accordionid, expandedliindex)
},
setup:function(config){
//Use JS to write out CSS that sets up initial dimensions of each LI, for JS enabled browsers only
document.write('<style type="text/css">\n')
document.write('#'+config.accordionid+' li{width: '+config.paneldimensions.peekw+';\nheight: '+config.paneldimensions.h+';\n}\n')
document.write('#'+config.accordionid+' li .hpanel{width: '+config.paneldimensions.fullw+';\nheight: '+config.paneldimensions.h+';\n}\n')
document.write('<\/style>')
jQuery(document).ready(function($){ //on Dom load
if (config.ajaxsource) //if config.ajaxsource option defined
haccordion.loadexternal($, config)
else
haccordion.init($, config)
}) //end DOM load
}
}