--- loncom/auth/lonauth.pm	2018/05/08 15:44:11	1.152
+++ loncom/auth/lonauth.pm	2018/07/01 00:03:42	1.153
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # User Authentication Module
 #
-# $Id: lonauth.pm,v 1.152 2018/05/08 15:44:11 raeburn Exp $
+# $Id: lonauth.pm,v 1.153 2018/07/01 00:03:42 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -170,7 +170,6 @@ sub success {
         $windowname .= 'lti';
     }
     my $windowinfo = Apache::lonhtmlcommon::scripttag('self.name="'.$windowname.'";');
-    my $header = '<meta HTTP-EQUIV="Refresh" CONTENT="0; url='.$destination.'" />';
     my $brcrum = [{'href' => '',
                    'text' => 'Successful Login'},];
     my $args = {'bread_crumbs' => $brcrum,};
@@ -207,20 +206,40 @@ sub success {
     }
     $r->send_http_header;
 
-    my $start_page;
+    my ($start_page,$js,$pagebody,$end_page);
     if ($env{'request.lti.login'}) {
-        $args = {'only_body' => 1,};
-        $start_page=&Apache::loncommon::start_page('',$header,$args);
+        $args = {'only_body' => 1};
+        if ($env{'request.lti.target'} eq '') {
+            my $ltitarget = (($destination =~ /\?/) ? '&' : '?').
+                            'ltitarget=iframe';
+            $js = <<"ENDJS";
+
+<script type="text/javascript">
+// <![CDATA[
+function setLTItarget() {
+    var newloc = '$destination';
+    if (parent !== window) {
+        newloc += '$ltitarget';
+    }
+    window.location.href=newloc;
+}
+// ]]>
+</script>
+
+ENDJS
+            $args->{'add_entries'} = {'onload' => "javascript:setLTItarget();"};
+            $pagebody =  '<noscript><span class="LC_warning">'
+                        .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
+                        .'</span></noscript>';
+        } else {
+            $args->{'redirect'} = [0,$destination,1];
+        }
+        $start_page=&Apache::loncommon::start_page('',$js,$args);
     } else {
+        $args->{'redirect'} = [0,$destination];
         $start_page=&Apache::loncommon::start_page('Successful Login',
-                                                   $header,$args);
-    }
-    my $end_page  =&Apache::loncommon::end_page();
-
-    my $continuelink='<a href="'.$destination.'">'.&mt('Continue').'</a>';
+                                                   $js,$args);
 
-    my $pagebody;
-    unless ($env{'request.lti.login'}) {
         my %lt=&Apache::lonlocal::texthash(
 				           'wel' => 'Welcome',
 				           'pro' => 'Login problems?',
@@ -232,11 +251,11 @@ sub success {
             $pagebody .= '<p><a href="'.$loginhelp.'">'.$lt{'pro'}.'</a></p>';
         }
     }
+    $end_page = &Apache::loncommon::end_page();
     $r->print(<<ENDSUCCESS);
 $start_page
 $windowinfo
 $pagebody
-$continuelink
 $end_page
 ENDSUCCESS
     return;