https://www.kolbu.com/wp-content/themes/prosumer/src/menu.js

1// This function is used for the Suckerfish (flyout) menus
2
3sfHover = function() {
4	var sfEls = document.getElementById("dropnav").getElementsByTagName("LI");
5	for (var i=0; i<sfEls.length; i++) {
6		sfEls[i].onmouseover=function() {
7			this.className+=" sfhover";
8		}
9		sfEls[i].onmouseout=function() {
10			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
11		}
12	}
13}
14if (window.attachEvent) window.attachEvent("onload", sfHover);
15
16
17
18// menuExpandable.js - implements an expandable menu based on a HTML list
19// Author: Dave Lindquist (http://www.gazingus.org)
20
21if (!document.getElementById)
22    document.getElementById = function() { return null; }
23
24function initializeMenu(menuId, actuatorId) {
25    var menu = document.getElementById(menuId);
26    var actuator = document.getElementById(actuatorId);
27
28    if (menu == null || actuator == null) return;
29
30    //if (window.opera) return; // I'm too tired
31
32   actuator.parentNode.style.background = "url(../img/arrow-down-sm.gif) 90% 10px no-repeat";
33    actuator.onclick = function() {
34        var display = menu.style.display;
35        this.parentNode.style.background =
36            (display == "block") ? "url(../img/arrow-down-sm.gif) 90% 10px no-repeat" : "url(../img/arrow-up-sm.gif) 90% 10px no-repeat";
37        menu.style.background = "url(/images/square.gif)";
38        menu.style.display = (display == "block") ? "none" : "block";
39
40        return false;
41    }
42}
43
44
45// Preload images
46
47function Preload() {
48 	var args = simplePreload.arguments;
49	document.imageArray = new Array(args.length);
50	for(var i=0; i<args.length; i++) {
51		document.imageArray[i] = new Image;
52		document.imageArray[i].src = args[i];
53	}
54   }