/* ---------------------------------------------
Nested Accordion v.1.4
Script to create 'accordion' functionality on a hierarchically structured content.
http://adipalaz.awardspace.com/experiments/jquery/nested_accordion.html
Requires: jQuery v1.3+
Copyright (c) 2009 Adriana Palazova
Dual licensed under the MIT (http://adipalaz.awardspace.com/docs/mit-license.txt) and GPL (http://adipalaz.awardspace.com/docs/gpl-license.txt) licenses.
------------------------------------------------ */

(function($) {
	//$.fn.orphans - http://www.mail-archive.com/jquery-en@googlegroups.com/msg43851.html
	$.fn.orphans = function() {
		var txt = [];
		this.each(function() {
			$.each(this.childNodes, function() {
				if (this.nodeType == 3 && $.trim(this.nodeValue)) txt.push(this)
			})
		}); return $(txt);
	};

	$.fn.accordion = function(options) {
		var defaults = {
			obj: 'ul', //the element that contains the accordion - 'ul', 'ol', 'div' 
			objClass: '.accordion', //the class name of the accordion
			objID: '', //the ID of the accordion (optional)
			wrapper: 'li', //the common parent of 'a.trigger' and 'o.next' - 'li', 'div'
			el: 'li', //the parent of 'a.trigger' - 'li', '.h'
			head: '', //the headings that are parents of 'a.trigger' (if any)
			next: 'ul', //the collapsible element - 'ul', 'ol', 'div'
			initShow: '', //the initially expanded section (optional)
			showMethod: 'slideDown', //'slideDown', 'show', 'fadeIn', or custom
			hideMethod: 'slideUp', //'slideUp', 'hide', 'fadeOut', or custom
			showSpeed: 400,
			hideSpeed: 800,
			activeLink: true // 'true' if the accordion is used for site navigation
		};

		var o = $.extend({}, defaults, options);


		return this.each(function() {
			var containerID = '#' + this.id,
          Obj = containerID + ' ' + o.obj + o.objID + o.objClass,
          El = Obj + ' ' + o.el,
          loc = window.location.href;

			$(Obj).find(o.head).addClass('h');

			$(El).orphans().wrap('<a class="trigger" style="display:block" href="#" title="open/close" />');

			$(El + '+ div:not(".outer")').wrap('<div class="outer" />');

			$(Obj + ' :header.h').each(function() {
				var $this = $(this);
				if (o.wrapper == 'div') $this.add($this.next('div.outer')).wrapAll('<div class="new"></div>');
			});

			$(El + ' a.trigger').closest(o.wrapper).find('> ' + o.next).hide();

			if (o.activeLink) $(Obj + ' a[href=' + loc + ']').addClass('active').closest(o.next).addClass('current');

			$(Obj).find(o.initShow).show()
          .parents(o.next).show().end()
          .parents(o.wrapper).find('> a.trigger, > ' + o.el + ' a.trigger').addClass('open');

			$(El).find('a.trigger').click(function() {
				var $nextEl = $(this).closest(o.wrapper).find('> ' + o.next),
                $siblings = $(this).closest(o.wrapper).siblings(o.wrapper);

				if (($nextEl).length && ($nextEl.is(':visible'))) {
					$(this).removeClass('open');
					$nextEl.filter(':visible')[o.hideMethod](o.hideSpeed);
					return false;
				};

				if (($nextEl).length && ($nextEl.is(':hidden'))) {
					$siblings.find('> a.open, >' + o.el + ' a.open').removeClass('open').end()
                .find('> ' + o.next + ':visible')[o.hideMethod](o.hideSpeed);
					$(this).addClass('open');
					$nextEl[o.showMethod](o.showSpeed);
					return false;
				};
			});
		});
	};
})(jQuery);
///////////////////////////
// The plugin can be invoked, for example, like this:
/* ---
$(function() {
/// Standard nested lists:
$('#container1').accordion();
// this will expand the first sub-list, when the accordion is initialized:
$('#container1').accordion({initShow : ">li>ul:eq(0)"});
// this will expand the second sub-list, when the accordion is initialized:
$('#container1').accordion({initShow : ">li>ul:eq(1)"});
// this will expand the sub-list with "class=current", when the accordion is initialized:
$('#container1').accordion({initShow : "ul.current"});
  
/// Nested Lists + Headings + DIVs:
$('#container2').accordion({el: '.h', head: 'h4, h5', next: 'div'});
$('#container2').accordion({el: '.h', head: 'h4, h5', next: 'div', initShow : 'div.outer:eq(1)'});
  
/// Nested DIVs + Headings:
$('#container2').accordion({obj: 'div', wrapper: 'div', el: '.h', head: 'h4, h5', next: 'div.outer'});
$('#container2').accordion({objID: '#acc2', obj: 'div', wrapper: 'div', el: '.h', head: 'h4, h5', next: 'div.outer', initShow : 'div.outer:eq(0)'});
});
--- */