diff --git a/modules/admin/tpl/js/admin.js b/modules/admin/tpl/js/admin.js
index 6cdb234ef..38c92e87a 100644
--- a/modules/admin/tpl/js/admin.js
+++ b/modules/admin/tpl/js/admin.js
@@ -1112,11 +1112,21 @@ $('.filebox')
 
 });
 
+/* insert fog layer */
+function showWaitingFogLayer() {
+	jQuery('.wfsr').wrap('<div class="wfsr_fog" />');
+}
+
+function hideWaitingFogLayer() {
+	jQuery('.wfsr').unwrap();
+}
+
 /* install module */
 function doInstallModule(module) {
     var params = new Array();
     params['module_name'] = module;
     exec_xml('install','procInstallAdminInstall',params, completeInstallModule);
+	showWaitingFogLayer();
 }
 
 /* upgrade module */
@@ -1124,9 +1134,11 @@ function doUpdateModule(module) {
     var params = new Array();
     params['module_name'] = module;
     exec_xml('install','procInstallAdminUpdate',params, completeInstallModule);
+	showWaitingFogLayer();
 }
 
 function completeInstallModule(ret_obj) {
+	hideWaitingFogLayer();
     alert(ret_obj['message']);
     location.reload();
 }