https://mirpu.ru/templates/ja_purity/js/ja.cssmenu.js

1
2sfHover = function() {
3	var sfEls = document.getElementById("ja-mainnav").getElementsByTagName("li");
4	for (var i=0; i<sfEls.length; ++i) {
5		sfEls[i].onmouseover=function() {
6			clearTimeout(this.timer);
7			if(this.className.indexOf(" sfhover") == -1)
8				this.className+=" sfhover";
9		}
10		sfEls[i].onmouseout=function() {
11			this.timer = setTimeout(sfHoverOut.bind(this), 20);
12		}
13	}
14}
15
16function sfHoverOut() {
17	clearTimeout(this.timer);
18	this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
19}
20
21if (window.attachEvent) window.attachEvent("onload", sfHover);