- echo '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">' .
- "\n\n" . html_tag( 'html' ,'' , '', '', 'lang="'.$squirrelmail_language.'"' ) . "\n<head>\n";
+ if ($frames) {
+ echo '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN">';
+ } else {
+ echo '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">';
+ }
+ echo "\n\n" . html_tag( 'html' ,'' , '', '', 'lang="'.$squirrelmail_language.'"' ) . "\n<head>\n";