--- loncom/homework/chemresponse.pm	2004/03/12 18:41:43	1.31
+++ loncom/homework/chemresponse.pm	2004/06/07 21:17:42	1.33
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # chemical equation style response
 #
-# $Id: chemresponse.pm,v 1.31 2004/03/12 18:41:43 albertel Exp $
+# $Id: chemresponse.pm,v 1.33 2004/06/07 21:17:42 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -92,7 +92,7 @@ $molecule
 </body>
 </html>
 CHEMPAGE
-    $body=&HTML::Entities::encode($body);
+    $body=&HTML::Entities::encode($body,'<>&"');
     $body=~s/\n/ /g;
     my $result=<<CHEMINPUT;
 <input type="button" value="Draw Molecule" onClick="javascript:editor=window.open('','','width=500,height=500,scrollbars=no,resizable=yes');editor.document.open('text/html','replace');editor.document.writeln('$body')" />
@@ -304,7 +304,15 @@ sub start_reactionresponse {
 	my $partid = $Apache::inputtags::part;
 	my $id = $Apache::inputtags::response['-1'];
 	my $reaction=$Apache::lonhomework::history{"resource.$partid.$id.submission"};
-	$result.=&edit_reaction_button($id,"HWVAL_$id",$reaction);
+	my $status=$Apache::inputtags::status['-1'];
+	if ($status eq 'CAN_ANSWER') {
+	    $result.=&edit_reaction_button($id,"HWVAL_$id",$reaction);
+	}
+	if (  &Apache::response::show_answer() ) {
+	    my $ans=&Apache::lonxml::get_param('answer',$parstack,$safeeval);
+	    $ans=~s/(\\|\')/\\$1/g;
+	    $Apache::inputtags::answertxt{$id}=&Apache::run::run("return &chemparse('$ans');",$safeeval);
+	}
     } elsif ($target eq "edit") {
 	$result .=&Apache::edit::tag_start($target,$token);
 	my $answer=&Apache::lonxml::get_param('answer',$parstack,