--- loncom/homework/lonhomework.pm	2001/12/07 23:57:52	1.66
+++ loncom/homework/lonhomework.pm	2002/01/17 12:23:31	1.69
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Homework handler
 #
-# $Id: lonhomework.pm,v 1.66 2001/12/07 23:57:52 albertel Exp $
+# $Id: lonhomework.pm,v 1.69 2002/01/17 12:23:31 harris41 Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -34,6 +34,7 @@ use strict;
 use Apache::style;
 use Apache::lonxml;
 use Apache::lonnet;
+use Apache::lonplot;
 use Apache::inputtags;
 use Apache::structuretags;
 use Apache::randomlabel;
@@ -43,7 +44,7 @@ use Apache::outputtags;
 use Apache::Constants qw(:common);
 #use Time::HiRes qw( gettimeofday tv_interval );
 
-sub BEGIN {
+BEGIN {
   &Apache::lonxml::register_insert();
 }
 
@@ -207,7 +208,9 @@ sub setupheader {
   } else {
     $request->content_type('text/html');
   }
-  if (!$Apache::lonxml::debug) { &Apache::loncommon::no_cache($request); }
+  if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
+    &Apache::loncommon::no_cache($request);
+  }
   $request->send_http_header;
   return OK if $request->header_only;
   return ''