--- loncom/interface/lonhtmlcommon.pm	2017/08/15 23:47:18	1.358.2.11.4.1
+++ loncom/interface/lonhtmlcommon.pm	2018/09/03 20:37:00	1.358.2.13
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common html routines
 #
-# $Id: lonhtmlcommon.pm,v 1.358.2.11.4.1 2017/08/15 23:47:18 raeburn Exp $
+# $Id: lonhtmlcommon.pm,v 1.358.2.13 2018/09/03 20:37:00 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -92,7 +92,7 @@ sub raw_href_to_link {
 
 sub entity_encode {
     my ($text)=@_;
-    return &HTML::Entities::encode($text, '<>&"');
+    return &HTML::Entities::encode($text, '\'<>&"');
 }
 
 sub direct_parm_link {
@@ -671,7 +671,7 @@ ENDJS
     my $minuteselector = qq{<input type="text" name="$dname\_minute" $special $state value="$min" size="3" />};
     my $secondselector= qq{<input type="text" name="$dname\_second" $special $state value="$sec" size="3" />};
     my $cal_link;
-    if (!$nolink) {
+    unless (($nolink) || ($state eq 'disabled')) {
         $cal_link = qq{<a href="javascript:$dname\_opencalendar()">};
     }
     #
@@ -696,7 +696,7 @@ ENDJS
                       $hourselector,$minuteselector,$secondselector).
                    $tzone;
     }
-    if (!$nolink) {
+    unless (($nolink) || ($state eq 'disabled')) {
         $result .= &mt('[_1]Select Date[_2]',$cal_link,'</a>');
     }
     $result .= "</span>\n<!-- end $dname date setting form -->\n";
@@ -3477,18 +3477,15 @@ sub jump_to_editres {
 # javascript_valid_email
 #
 # Generates javascript to validate an e-mail address.
-# Returns a javascript function which accepts a form field as argument, and
+# Returns a javascript function which accetps a form field as argumnent, and
 # returns false if field.value does not satisfy two regular expression matches
 # for a valid e-mail address.  Backwards compatible with old browsers without
 # support for javascript RegExp (just checks for @ in field.value in this case). 
 
 sub javascript_valid_email {
     my $scripttag .= <<'END';
-function validmail(field,suffix) {
+function validmail(field) {
     var str = field.value;
-    if (suffix != '' && suffix != undefined) {
-        str += suffix;
-    }
     if (window.RegExp) {
         var reg1str = "(@.*@)|(\\.\\.)|(@\\.)|(\\.@)|(^\\.)";
         var reg2str = "^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$"; //"