--- weblib.php.orig	2008-08-21 16:08:51.000000000 +0100
+++ weblib.php	2008-08-21 16:09:18.000000000 +0100
@@ -6106,8 +6106,10 @@
 function frametarget() {
     global $CFG;
 
-    if (empty($CFG->framename) or ($CFG->framename == '_top')) {
+    if (empty($CFG->framename)) {
         return '';
+    } else if($CFG->framename == '_top') {
+        return ' target="_top" ';
     } else {
         return ' target="'.$CFG->framename.'" ';
     }