--- loncom/interface/lonextresedit.pm	2019/05/02 02:12:18	1.28
+++ loncom/interface/lonextresedit.pm	2022/09/09 14:24:30	1.30
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Documents
 #
-# $Id: lonextresedit.pm,v 1.28 2019/05/02 02:12:18 raeburn Exp $
+# $Id: lonextresedit.pm,v 1.30 2022/09/09 14:24:30 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -424,9 +424,9 @@ sub extedit_form {
             $rows = 10;
             $cols = 45;
             if ($type eq 'tool') {
-                $legend = $lt{'ee'};
-            } else {
                 $legend = $lt{'te'};
+            } else {
+                $legend = $lt{'ee'};
             }
             $legend = '<legend>'.$legend.'</legend>';
             if ($symb) {
@@ -981,12 +981,14 @@ function extUrlPreview(caller,protocol)
             http.onreadystatechange = function() {
                 if (http.readyState == 4) {
                     if (http.status == 200) {
-                        if (http.responseText == 1) {
-                            noiframe = 1;
-                        } else if (http.responseText == -1) {
-                            nopriv = 1;
-                        } else if (http.responseText == 0) {
-                            badurl = 1;
+                        if (http.responseText.length > 0) {
+                            if (http.responseText == 1) {
+                                noiframe = 1;
+                            } else if (http.responseText == -1) {
+                                nopriv = 1;
+                            } else if (http.responseText == 0) {
+                                badurl = 1;
+                            }
                         }
                         openPreviewWindow(url,name,noiframe,mixed,nopriv,badurl);
                     }