--- loncom/interface/lonhelp.pm	2005/03/22 16:49:02	1.17
+++ loncom/interface/lonhelp.pm	2005/04/07 06:56:23	1.18
@@ -37,6 +37,7 @@ use Apache::lonacc();
 use Apache::lontexconvert();
 use Apache::lonnavmaps; # for advancedUser
 use Apache::lonlocal;
+use Apache::lonnet;
 use tth();
 use GDBM_File();
 
@@ -180,10 +181,10 @@ sub handler
 	 $tex .= join('', <$file>);
      }
 
-     if ($ENV{'browser.mathml'}) {
+     if ($env{'browser.mathml'}) {
 	 &Apache::loncommon::content_type($r,'text/xml');
 	 &tth::ttminit();
-	 if ($ENV{'browser.unicode'}) {
+	 if ($env{'browser.unicode'}) {
 	     &tth::ttmoptions('-L -u1');
 	 } else {
 	     &tth::ttmoptions('-L -u0');
@@ -191,7 +192,7 @@ sub handler
      } else {
 	 &Apache::loncommon::content_type($r,"text/html");
 	 &tth::tthinit();
-	 if ($ENV{'browser.unicode'}) {
+	 if ($env{'browser.unicode'}) {
 	     &tth::tthoptions('-L -u1');
 	 } else {
 	     &tth::tthoptions('-L -u0');