add missing JS file

resources/js/menu.js

+var $_expandedItems, $_allMenuItems, $_navIcon;
+var _expandedClass = "et-expanded";
+var _menuPauseTime = 1000;
+var _menuTimeout;
+
+function toggleWholeMenu(){
+	var $expandedItems = getExpandedItems();
+	if($expandedItems) {
+		collapseMenu($expandedItems);
+	} else {
+		expandMenu($_allMenuItems);
+	}
+}
+
+function expandMenu($elements) {
+	$elements.addClass(_expandedClass);
+	$_expandedItems = $elements;
+}
+
+function collapseMenu($expandedItems) {
+	$expandedItems.removeClass(_expandedClass);
+}
+
+function isWide() {
+	return $_navIcon.is(':hidden');
+}
+
+function getExpandedItems() {
+	var $expandedItems = $("." + _expandedClass);
+	if($expandedItems.length == 0) {
+		$expandedItems = undefined;
+	}
+	return $expandedItems;
+}
+
+
+$(function(){
+	$_navIcon = $(".nav-icon");
+	$_allMenuItems = $(".et-first-option, .et-option, .et-last-option, .et-submenu");
+
+	$(window).resize(function() {
+		collapseMenu($_allMenuItems);
+	});
+
+	$(".et-has-children").mouseover(function(){
+		if(isWide()){
+			clearTimeout(_menuTimeout);
+			collapseMenu($_allMenuItems);
+			expandMenu($(this));
+		}
+	});
+
+	$(".et-has-children").mouseout(function(){
+		if(isWide()){
+				_menuTimeout = setTimeout(function(){
+					collapseMenu($_allMenuItems);
+				}, _menuPauseTime);
+		}
+	});
+
+	$(".et-submenu").mouseover(function(){
+		clearTimeout(_menuTimeout);
+	});
+
+	$(".et-submenu").mouseover(function(){
+		if(isWide()){
+			collapseMenu($_allMenuItems);
+		}
+	});
+
+	$(".no-children").mouseover(function(){
+		if(isWide()){
+			collapseMenu($_allMenuItems);
+		}
+	});
+
+	$($_navIcon).click(function(){
+		toggleWholeMenu();
+	});
+
+});