https://www.holocaustnamenmonument.nl/modules/socialbaker/frontend.js?t=1467381206

1// create social networking pop-ups
2	$(document).ready(function() {
3		// link selector and pop-up window size
4		var Config = {
5			Link: "a.share > img",
6			Width: 500,
7			Height: 500
8		};
9	 
10		// add handler links
11		var slink = document.querySelectorAll(Config.Link);
12		for (var a = 0; a < slink.length; a++) {
13			slink[a].onclick = PopupHandler;
14		}
15	 
16		// create popup
17		function PopupHandler(e) {
18	 
19			e = (e ? e : window.event);
20			//var t = (e.target ? e.target : e.srcElement);
21			var t = (e.target ? e.target : e.srcElement).parentNode;
22			// popup position
23			var
24				px = Math.floor(((screen.availWidth || 1024) - Config.Width) / 2),
25				py = Math.floor(((screen.availHeight || 700) - Config.Height) / 2);
26	 
27			// open popup
28			var popup = window.open(t.href, "social",
29				"width="+Config.Width+",height="+Config.Height+
30				",left="+px+",top="+py+
31				",location=0,menubar=0,toolbar=0,status=0,scrollbars=1,resizable=1");
32			if (popup) {
33				popup.focus();
34				if (e.preventDefault) e.preventDefault();
35				e.returnValue = false;
36			}
37	 
38			return !!popup;
39		}
40	 
41	});
42//});