Index: dhtml_menu.js
===================================================================
--- dhtml_menu.js	(revision 132)
+++ dhtml_menu.js	(working copy)
@@ -8,14 +8,14 @@
 dhtmlMenu.switchMenu = function(submenu, parent) {
   if($(parent).is(".expanded")) {
     if (Drupal.settings.dhtmlMenu.useEffects) {
-      $(submenu).slideUp("fast");
+      $(submenu).hide("fast");
     } else {
       $(submenu).css("display", "none");
     }
     $(parent).removeClass("expanded").addClass("collapsed");
   } else {
     if (Drupal.settings.dhtmlMenu.useEffects) {
-      $(submenu).slideDown("fast");
+      $(submenu).show("fast");
     } else {
       $(submenu).css("display", "inline");
     }