https://overlandturkey.com/js/accordion.js

1(
2	function($)
3	{
4		$.fn.accordion = function(options)
5		{
6		return this.each(function() {
7			var settings = $.extend(
8			{
9				firstChildExpand: true,
10            multiExpand: false,
11            slideSpeed: 500,
12            dropDownIcon: '&#9660'
13         }, options );
14        
15			$(this).children("strong").each(
16				function()
17				{
18					$(this).next('div').andSelf().wrapAll("<div class='accordion-item'></div>");
19				}
20			);
21			$(this).children().children('div').addClass("accordion-content");
22			$(this).find("strong").wrap("<div class='accordion-header'></div>");
23			$(this).find("strong").after("<div class='accordion-header-icon'>"+settings.dropDownIcon+"</div>");
24			$(this).children('.accordion-item').wrap('<div class="drawer"></div>');
25			if(settings.firstChildExpand==true)
26			{
27				$(this).find(".accordion-header:first").toggleClass("accordion-header-active");
28				$(this).find(".accordion-header:first").parent().toggleClass("accordion-item-active");
29				$(this).find(".accordion-header:first").next().slideToggle(0);
30				$(this).find(".accordion-header:first").children(".accordion-header-icon").toggleClass("accordion-header-icon-active");
31			}	
32			$(this).find(".accordion-header").click(
33				function()
34				{
35					if(settings.multiExpand==false){
36						if(!$(this).hasClass('accordion-header-active'))
37						{
38							$(this).parent().parent().parent().find(".accordion-header-active").removeClass('accordion-header-active');
39							$(this).parent().parent().parent().find(".accordion-item-active").children(".accordion-content").slideUp(settings.slideSpeed);
40							$(this).parent().parent().parent().find(".accordion-header-icon-active").removeClass("accordion-header-icon-active");
41							$(this).parent().parent().parent().find(".accordion-item-active").removeClass("accordion-item-active");
42						}
43					}
44					$(this).toggleClass("accordion-header-active");
45					$(this).parent().toggleClass("accordion-item-active");
46					$(this).next().slideToggle(settings.slideSpeed);
47					$(this).children(".accordion-header-icon").toggleClass("accordion-header-icon-active");
48				}
49			);	
50		});
51		}
52	}
53(jQuery));