https://www.widzewtomy.net/wp-content/plugins/projectmanager/js/projectmanager.js?ver=5.9.18

1jQuery(document).ready(function() {
2	/*
3	 * Own Expandable list
4	 */
5	// close list items
6	jQuery(".projectmanager-list.expandable>.list-header").addClass("closed");
7	jQuery(".projectmanager-list.expandable>.list-content").addClass("closed");
8	
9	// maybe open first item
10	if ( jQuery(".projectmanager-list.expandable").hasClass("first-open") ) {
11		jQuery(".projectmanager-list.expandable>.list-header:first").toggleClass("closed open");
12		jQuery(".projectmanager-list.expandable>.list-content:first").toggleClass("closed open");
13	}
14	
15	jQuery(".projectmanager-list.expandable>.list-header").click(function(){
16		jQuery(this).next(".list-content").slideToggle("fast");
17		jQuery(this).next(".list-content").toggleClass("closed open");
18		jQuery(this).toggleClass("closed open");
19	});
20
21	/* jQuery UI accordion list */	
22	jQuery( ".projectmanager-list.accordion" ).accordion({
23		header: ".list-header",
24		heightStyle: "content"
25	});
26	
27	/*
28	 * enable datepicker for date formfields
29	 */
30	jQuery(".datepicker").datepicker({
31		showAnim: "slideDown",
32		showOtherMonths: true,
33		showButtonPanel: true,
34		numberOfMonths: 3,
35		showWeek: true,
36		dateFormat: "yy-mm-dd",
37		changeYear: true,
38		yearRange: "c-100:c+100",
39		changeMonth: true
40	});
41	jQuery(".datepicker").css("display", "inline");
42	jQuery(".form-input-date").remove();
43});