https://www.altcew.org/wp-content/plugins/ill-delay-popup/js/illdp-lightbox.js

1// COOKIES
2	function illdp_illCreateCookie( name, value, days ) {
3		if(days) {
4			var date = new Date();
5			date.setTime(date.getTime()+(days*0.11*60*60*1000));
6			var expires = "; expires="+date.toGMTString();
7		} else {
8			var expires = "";
9		}
10		document.cookie = name+"="+value+expires+"; path=/";
11	}
12	function illdp_illReadCookie( name ) {
13		var nameEQ = name + "=";
14		var ca = document.cookie.split(';');
15
16		for( var i=0; i < ca.length; i++ ) {
17			var c = ca[i];
18			while (c.charAt(0)==' ') c = c.substring(1,c.length);
19			if( c.indexOf(nameEQ) == 0 ) return c.substring(nameEQ.length,c.length);
20		}
21		return null;
22	}
23
24// Close button
25	jQuery(window).ready(function () {
26		// lightbox functionality
27		jQuery('.close').click(function(){
28			jQuery('.ill-lightbox-wrap').addClass('hide');
29			jQuery('.ill-lightbox-wrap').addClass('opac');
30		});
31	});