--- loncom/interface/loncommon.pm	2008/05/29 02:58:41	1.655
+++ loncom/interface/loncommon.pm	2008/05/31 23:53:18	1.659
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common routines
 #
-# $Id: loncommon.pm,v 1.655 2008/05/29 02:58:41 raeburn Exp $
+# $Id: loncommon.pm,v 1.659 2008/05/31 23:53:18 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -67,6 +67,7 @@ use Apache::loncoursedata();
 use Apache::lontexconvert();
 use Apache::lonclonecourse();
 use LONCAPA qw(:DEFAULT :match);
+use DateTime::TimeZone;
 
 # ---------------------------------------------- Designs
 use vars qw(%defaultdesign);
@@ -634,6 +635,27 @@ ENDSCRT
     return $jscript;
 }
 
+sub select_timezone {
+   my ($name,$selected,$onchange,$includeempty)=@_;
+   my $output='<select name="'.$name.'" '.$onchange.'>'."\n";
+   if ($includeempty) {
+       $output .= '<option value=""';
+       if (($selected eq '') || ($selected eq 'local')) {
+           $output .= ' selected="selected" ';
+       }
+       $output .= '> </option>';
+   }
+   my @timezones = DateTime::TimeZone->all_names;
+   foreach my $tzone (@timezones) {
+       $output.= '<option value="'.$tzone.'"';
+       if ($tzone eq $selected) {
+           $output.=' selected="selected"';
+       }
+       $output.=">$tzone</option>\n";
+   }
+   $output.="</select>";
+   return $output;
+}
 
 =pod