diff --git a/module/custom/js/ajaxmenu.js b/module/custom/js/ajaxmenu.js
index bf4e6a4a85..92a936973e 100644
--- a/module/custom/js/ajaxmenu.js
+++ b/module/custom/js/ajaxmenu.js
@@ -6,13 +6,13 @@ $(function()
         $subNavbar    = $('#subNavbar'),
         $mainMenu     = $('#mainMenu'),
         $loadingIcon  = $('#loadingIcon'),
-        $menuEditor   = $('#menuEditor');
-    var menuConfig    =
-    {
-        'main':    null,
-        'module':  {},
-        'feature': {}
-    };
+        $menuEditor   = $('#menuEditor'),
+        menuConfig    =
+        {
+            'main':    null,
+            'module':  {},
+            'feature': {}
+        };
 
     var updateConfig = function($menu)
     {
@@ -47,23 +47,7 @@ $(function()
                 $a.data('menu', item).append('<i class="item-hidden-icon icon icon-eye-off"></i>');
                 $('<li/>').attr('data-id', item.name).toggleClass('right', item.float === 'right').toggleClass('menu-hidden', !!item.hidden).append($a).appendTo($nav);
                 var $dropmenu = $a.find('.dropdown-menu').empty();
-                if ($dropmenu.length && item.subMenu)
-                {
-                    $.each(item.subMenu, function(subIdx, subItem)
-                    {
-                        subItem.order = subIdx + 1;
-                        var $subA = $('<a href="#"/>').append(subItem.text);
-                        $subA.data('menu', subItem).append('<i class="item-hidden-icon icon icon-eye-off"></i>');
-                        $('<li/>').attr('data-id', subItem.name).toggleClass('right', subItem.float === 'right').toggleClass('menu-hidden', !!subItem.hidden).append($subA).appendTo($dropmenu);
-                    });
-                    var $aInner = $a.children('a');
-                    if ($aInner.length)
-                    {
-                        $aInner.replaceWith($('<span>' + $aInner.text() + ' <span class="caret"></span></span>'));
-                        $a.addClass('dropdown-hover');
-                    }
-                }
-                if(!$dropmenu.children().length) $dropmenu.remove();
+                return $dropmenu.remove(); // Disable custom submenu, full function see https://github.com/easysoft/zentaopms/blob/c7fdbddfc074ddd7ddf539b1d3b5f108ab13ec7b/module/custom/js/ajaxmenu.js
             });
             $nav.sortable({finish: function(e)
             {