https://www.sotillodelaribera.com/templates/TurismoSotillo/mainmenu.js

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