--- loncom/interface/domainprefs.pm	2010/12/08 03:38:46	1.141
+++ loncom/interface/domainprefs.pm	2013/03/04 18:05:39	1.193
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set domain-wide configuration settings
 #
-# $Id: domainprefs.pm,v 1.141 2010/12/08 03:38:46 raeburn Exp $
+# $Id: domainprefs.pm,v 1.193 2013/03/04 18:05:39 bisitz Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -45,7 +45,7 @@ described at http://www.lon-capa.org.
 =head1 OVERVIEW
 
 Each institution using LON-CAPA will typically have a single domain designated 
-for use by individuals affliated with the institution.  Accordingly, each domain
+for use by individuals affiliated with the institution.  Accordingly, each domain
 may define a default set of logos and a color scheme which can be used to "brand"
 the LON-CAPA instance. In addition, an institution will typically have a language
 and timezone which are used for the majority of courses.
@@ -86,8 +86,8 @@ $dom,$settings,$rowtotal,$action.
 
 $dom is the domain, $settings is a reference to a hash of current settings for
 the current context, $rowtotal is a reference to the scalar used to record the 
-number of rows displayed on the page, and $action is the context (either quotas 
-or requestcourses).
+number of rows displayed on the page, and $action is the context (quotas,  
+requestcourses or requestauthor).
 
 The print_quotas routine was orginally created to display/store information
 about default quota sizes for portfolio spaces for the different types of 
@@ -140,7 +140,7 @@ autolimit
 
 =over
  
-- course requests will be processed autoatically up to a limit of
+- course requests will be processed automatically up to a limit of
 N requests for the course type for the particular requestor.
 If N is undefined, there is no limit to the number of course requests
 which a course owner may submit and have processed automatically. 
@@ -171,6 +171,9 @@ use Locale::Language;
 use DateTime::TimeZone;
 use DateTime::Locale;
 
+my $registered_cleanup;
+my $modified_urls;
+
 sub handler {
     my $r=shift;
     if ($r->header_only) {
@@ -190,6 +193,10 @@ sub handler {
         "/adm/domainprefs:mau:0:0:Cannot modify domain settings";
         return HTTP_NOT_ACCEPTABLE;
     }
+
+    $registered_cleanup=0;
+    @{$modified_urls}=();
+
     &Apache::lonhtmlcommon::clear_breadcrumbs();
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                                             ['phase','actions']);
@@ -197,18 +204,28 @@ sub handler {
     if ( exists($env{'form.phase'}) ) {
         $phase = $env{'form.phase'};
     }
+    my %servers = &Apache::lonnet::internet_dom_servers($dom);
     my %domconfig =
       &Apache::lonnet::get_dom('configuration',['login','rolecolors',
                 'quotas','autoenroll','autoupdate','autocreate',
                 'directorysrch','usercreation','usermodification',
                 'contacts','defaults','scantron','coursecategories',
                 'serverstatuses','requestcourses','helpsettings',
-                'coursedefaults','usersessions'],$dom);
+                'coursedefaults','usersessions','loadbalancing',
+                'requestauthor'],$dom);
     my @prefs_order = ('rolecolors','login','defaults','quotas','autoenroll',
                        'autoupdate','autocreate','directorysrch','contacts',
                        'usercreation','usermodification','scantron',
-                       'requestcourses','coursecategories','serverstatuses','helpsettings',
+                       'requestcourses','requestauthor','coursecategories',
+                       'serverstatuses','helpsettings',
                        'coursedefaults','usersessions');
+    my %existing;
+    if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
+        %existing = %{$domconfig{'loadbalancing'}};
+    }
+    if ((keys(%servers) > 1) || (keys(%existing) > 0)) {
+        push(@prefs_order,'loadbalancing');
+    }
     my %prefs = (
         'rolecolors' =>
                    { text => 'Default color schemes',
@@ -225,10 +242,11 @@ sub handler {
         'login' =>
                     { text => 'Log-in page options',
                       help => 'Domain_Configuration_Login_Page',
-                      header => [{col1 => 'Item',
-                                  col2 => '',}],
+                      header => [{col1 => 'Log-in Page Items',
+                                  col2 => '',},
+                                 {col1 => 'Log-in Help',
+                                  col2 => 'Value'}],
                     },
-
         'defaults' => 
                     { text => 'Default authentication/language/timezone/portal',
                       help => 'Domain_Configuration_LangTZAuth',
@@ -236,7 +254,7 @@ sub handler {
                                   col2 => 'Value'}],
                     },
         'quotas' => 
-                    { text => 'User blogs, personal information pages, portfolios',
+                    { text => 'Blogs, personal web pages, webDAV, portfolios',
                       help => 'Domain_Configuration_Quotas',
                       header => [{col1 => 'User affiliation',
                                   col2 => 'Available tools',
@@ -312,6 +330,14 @@ sub handler {
                              {col1 => 'Setting',
                               col2 => 'Value'}],
                  },
+        'requestauthor' =>
+                 {text => 'Request authoring space',
+                  help => 'Domain_Configuration_Request_Author',
+                  header => [{col1 => 'User affiliation',
+                              col2 => 'Availability/Processing of requests',},
+                             {col1 => 'Setting',
+                              col2 => 'Value'}],
+                 },
         'coursecategories' =>
                   { text => 'Cataloging of courses/communities',
                     help => 'Domain_Configuration_Cataloging_Courses',
@@ -332,10 +358,8 @@ sub handler {
         'helpsettings' =>
                  {text   => 'Help page settings',
                   help   => 'Domain_Configuration_Help_Settings',
-                  header => [{col1 => 'Authenticated Help Settings',
-                              col2 => ''},
-                             {col1 => 'Unauthenticated Help Settings',
-                              col2 => ''}],
+                  header => [{col1 => 'Help Settings (logged-in users)',
+                              col2 => 'Value'}],
                  },
         'coursedefaults' => 
                  {text => 'Course/Community defaults',
@@ -352,35 +376,88 @@ sub handler {
                               col2 => 'Value',}],
                  },
         'usersessions' =>
-                 {text  => 'User session hosting',
+                 {text  => 'User session hosting/offloading',
                   help  => 'Domain_Configuration_User_Sessions',
-                  header => [{col1 => 'Hosting of users from other domains',
+                  header => [{col1 => 'Domain server',
+                              col2 => 'Servers to offload sessions to when busy'},
+                             {col1 => 'Hosting of users from other domains',
                               col2 => 'Rules'},
                              {col1 => "Hosting domain's own users elsewhere",
                               col2 => 'Rules'}],
                  },
+         'loadbalancing' =>
+                 {text  => 'Dedicated Load Balancer(s)',
+                  help  => 'Domain_Configuration_Load_Balancing',
+                  header => [{col1 => 'Balancers',
+                              col2 => 'Default destinations',
+                              col3 => 'User affiliation',
+                              col4 => 'Overrides'},
+                            ],
+                 },
     );
-    my %servers = &dom_servers($dom);
     if (keys(%servers) > 1) {
         $prefs{'login'}  = { text   => 'Log-in page options',
                              help   => 'Domain_Configuration_Login_Page',
                             header => [{col1 => 'Log-in Service',
                                         col2 => 'Server Setting',},
                                        {col1 => 'Log-in Page Items',
-                                        col2 => ''}],
+                                        col2 => ''},
+                                       {col1 => 'Log-in Help',
+                                        col2 => 'Value'}],
                            };
     }
+
     my @roles = ('student','coordinator','author','admin');
     my @actions = &Apache::loncommon::get_env_multiple('form.actions');
     &Apache::lonhtmlcommon::add_breadcrumb
     ({href=>"javascript:changePage(document.$phase,'pickactions')",
       text=>"Settings to display/modify"});
     my $confname = $dom.'-domainconfig';
+
     if ($phase eq 'process') {
         &Apache::lonconfigsettings::make_changes($r,$dom,$phase,$context,\@prefs_order,\%prefs,\%domconfig,$confname,\@roles);
     } elsif ($phase eq 'display') {
-        &Apache::lonconfigsettings::display_settings($r,$dom,$phase,$context,\@prefs_order,\%prefs,\%domconfig,$confname);
-    } else {
+        my $js = &recaptcha_js().
+                 &credits_js();
+        if ((keys(%servers) > 1) || (keys(%existing) > 0)) {
+            my ($othertitle,$usertypes,$types) =
+                &Apache::loncommon::sorted_inst_types($dom);
+            $js .= &lonbalance_targets_js($dom,$types,\%servers,
+                                          $domconfig{'loadbalancing'}).
+                   &new_spares_js().
+                   &common_domprefs_js().
+                   &Apache::loncommon::javascript_array_indexof();
+        }
+        &Apache::lonconfigsettings::display_settings($r,$dom,$phase,$context,\@prefs_order,\%prefs,\%domconfig,$confname,$js);
+    } else {
+# check if domconfig user exists for the domain.
+        my $servadm = $r->dir_config('lonAdmEMail');
+        my ($configuserok,$author_ok,$switchserver) =
+            &config_check($dom,$confname,$servadm);
+        unless ($configuserok eq 'ok') {
+            &Apache::lonconfigsettings::print_header($r,$phase,$context);
+            $r->print(&mt('The domain configuration user "[_1]" has yet to be created.',
+                           $confname).
+                      '<br />'
+            );
+            if ($switchserver) {
+                $r->print(&mt('Ordinarily, that domain configuration user is created when the ./UPDATE script is run to install LON-CAPA for the first time.').
+                          '<br />'.
+                          &mt('However, that does not apply when new domains are added to a multi-domain server, and ./UPDATE has not been run recently.').
+                          '<br />'.
+                          &mt('The "[_1]" user can be created automatically when a Domain Coordinator visits the web-based "Set domain configuration" screen, in a session hosted on the primary library server.',$confname).
+                          '<br />'.
+                          &mt('To do that now, use the following link: [_1]',$switchserver)
+                );
+            } else {
+                $r->print(&mt('To create that user from the command line run the ./UPDATE script found in the top level directory of the extracted LON-CAPA tarball.').
+                          '<br />'.
+                          &mt('Once that is done, you will be able to use the web-based "Set domain configuration" to configure the domain')
+                );
+            }
+            $r->print(&Apache::loncommon::end_page());
+            return OK;
+        }
         if (keys(%domconfig) == 0) {
             my $primarylibserv = &Apache::lonnet::domain($dom,'primary');
             my @ids=&Apache::lonnet::current_machine_ids();
@@ -457,12 +534,16 @@ sub process_changes {
         $output = &modify_serverstatuses($dom,%domconfig);
     } elsif ($action eq 'requestcourses') {
         $output = &modify_quotas($dom,$action,%domconfig);
+    } elsif ($action eq 'requestauthor') {
+        $output = &modify_quotas($dom,$action,%domconfig);
     } elsif ($action eq 'helpsettings') {
         $output = &modify_helpsettings($r,$dom,$confname,%domconfig);
     } elsif ($action eq 'coursedefaults') {
         $output = &modify_coursedefaults($dom,%domconfig);
     } elsif ($action eq 'usersessions') {
         $output = &modify_usersessions($dom,%domconfig);
+    } elsif ($action eq 'loadbalancing') {
+        $output = &modify_loadbalancing($dom,%domconfig);
     }
     return $output;
 }
@@ -488,16 +569,21 @@ sub print_config_box {
     }
     if ($numheaders > 1) {
         my $colspan = '';
-        if (($action eq 'rolecolors') || ($action eq 'coursecategories') || ($action eq 'helpsettings')) {
+        my $rightcolspan = '';
+        if (($action eq 'rolecolors') || ($action eq 'coursecategories') || 
+            (($action eq 'login') && ($numheaders < 3))) {
             $colspan = ' colspan="2"';
         }
+        if ($action eq 'usersessions') {
+            $rightcolspan = ' colspan="3"'; 
+        }
         $output .= '
           <tr>
            <td>
             <table class="LC_nested">
              <tr class="LC_info_row">
               <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[0]->{'col1'}).'</td>
-              <td class="LC_right_item">'.&mt($item->{'header'}->[0]->{'col2'}).'</td>
+              <td class="LC_right_item"'.$rightcolspan.'>'.&mt($item->{'header'}->[0]->{'col2'}).'</td>
              </tr>';
         $rowtotal ++;
         if ($action eq 'autoupdate') {
@@ -509,12 +595,16 @@ sub print_config_box {
         } elsif ($action eq 'coursecategories') {
             $output .= &print_coursecategories('top',$dom,$item,$settings,\$rowtotal);
         } elsif ($action eq 'login') {
-            $output .= &print_login('top',$dom,$confname,$phase,$settings,\$rowtotal);
-            $colspan = ' colspan="2"';
+            if ($numheaders == 3) {
+                $colspan = ' colspan="2"';
+                $output .= &print_login('service',$dom,$confname,$phase,$settings,\$rowtotal);
+            } else {
+                $output .= &print_login('page',$dom,$confname,$phase,$settings,\$rowtotal);
+            }
         } elsif ($action eq 'requestcourses') {
             $output .= &print_quotas($dom,$settings,\$rowtotal,$action);
-        } elsif ($action eq 'helpsettings') {
-            $output .= &print_helpsettings('top',$dom,$confname,$settings,\$rowtotal);
+        } elsif ($action eq 'requestauthor') {
+            $output .= &print_quotas($dom,$settings,\$rowtotal,$action);
         } elsif ($action eq 'usersessions') {
             $output .= &print_usersessions('top',$dom,$settings,\$rowtotal); 
         } elsif ($action eq 'rolecolors') {
@@ -577,13 +667,39 @@ sub print_config_box {
         } elsif ($action eq 'coursecategories') {
             $output .= &print_coursecategories('bottom',$dom,$item,$settings,\$rowtotal);
         } elsif ($action eq 'login') {
-            $output .= &print_login('bottom',$dom,$confname,$phase,$settings,\$rowtotal);
+            if ($numheaders == 3) {
+                $output .= &print_login('page',$dom,$confname,$phase,$settings,\$rowtotal).'
+           </table>
+          </td>
+         </tr>
+         <tr>
+           <td>
+            <table class="LC_nested">
+             <tr class="LC_info_row">
+              <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[2]->{'col1'}).'</td>
+              <td class="LC_right_item"'.$colspan.'>'.&mt($item->{'header'}->[2]->{'col2'}).'</td>      </tr>'.
+                       &print_login('help',$dom,$confname,$phase,$settings,\$rowtotal);
+                $rowtotal ++;
+            } else {
+                $output .= &print_login('help',$dom,$confname,$phase,$settings,\$rowtotal);
+            }
         } elsif ($action eq 'requestcourses') {
-            $output .= &print_courserequestmail($dom,$settings,\$rowtotal);
-        } elsif ($action eq 'helpsettings') {
-            $output .= &print_helpsettings('bottom',$dom,$confname,$settings,\$rowtotal);
+            $output .= &print_requestmail($dom,$action,$settings,\$rowtotal);
+        } elsif ($action eq 'requestauthor') {
+            $output .= &print_requestmail($dom,$action,$settings,\$rowtotal);
         } elsif ($action eq 'usersessions') {
-            $output .= &print_usersessions('bottom',$dom,$settings,\$rowtotal);
+            $output .= &print_usersessions('middle',$dom,$settings,\$rowtotal).'
+           </table>
+          </td>
+         </tr>
+         <tr>
+           <td>
+            <table class="LC_nested">
+             <tr class="LC_info_row">
+              <td class="LC_left_item"'.$colspan.'>'.&mt($item->{'header'}->[2]->{'col1'}).'</td>
+              <td class="LC_right_item">'.&mt($item->{'header'}->[2]->{'col2'}).'</td>      </tr>'.
+                       &print_usersessions('bottom',$dom,$settings,\$rowtotal);
+            $rowtotal ++;
         } elsif ($action eq 'coursedefaults') {
             $output .= &print_coursedefaults('bottom',$dom,$settings,\$rowtotal);
         } elsif ($action eq 'rolecolors') {
@@ -644,19 +760,25 @@ sub print_config_box {
         }
         $output .= '</td>';
         if ($item->{'header'}->[0]->{'col3'}) {
-            $output .= '<td class="LC_right_item" valign="top">'.
-                       &mt($item->{'header'}->[0]->{'col3'});
+            if (defined($item->{'header'}->[0]->{'col4'})) {
+                $output .= '<td class="LC_left_item" valign="top">'.
+                            &mt($item->{'header'}->[0]->{'col3'});
+            } else {
+                $output .= '<td class="LC_right_item" valign="top">'.
+                           &mt($item->{'header'}->[0]->{'col3'});
+            }
             if ($action eq 'serverstatuses') {
                 $output .= '<br />(<tt>'.&mt('IP1,IP2 etc.').'</tt>)';
             }
             $output .= '</td>';
         }
+        if ($item->{'header'}->[0]->{'col4'}) {
+            $output .= '<td class="LC_right_item" valign="top">'.
+                       &mt($item->{'header'}->[0]->{'col4'});
+        }
         $output .= '</tr>';
         $rowtotal ++;
-        if ($action eq 'login') {
-            $output .= &print_login('bottom',$dom,$confname,$phase,$settings,
-                                    \$rowtotal);
-        } elsif ($action eq 'quotas') {
+        if ($action eq 'quotas') {
             $output .= &print_quotas($dom,$settings,\$rowtotal,$action);
         } elsif ($action eq 'autoenroll') {
             $output .= &print_autoenroll($dom,$settings,\$rowtotal);
@@ -673,7 +795,9 @@ sub print_config_box {
         } elsif ($action eq 'serverstatuses') {
             $output .= &print_serverstatuses($dom,$settings,\$rowtotal);
         } elsif ($action eq 'helpsettings') {
-            $output .= &print_helpsettings('top',$dom,$confname,$settings,\$rowtotal);
+            $output .= &print_helpsettings($dom,$confname,$settings,\$rowtotal);
+        } elsif ($action eq 'loadbalancing') {
+            $output .= &print_loadbalancing($dom,$settings,\$rowtotal);
         }
     }
     $output .= '
@@ -685,12 +809,12 @@ sub print_config_box {
 }
 
 sub print_login {
-    my ($position,$dom,$confname,$phase,$settings,$rowtotal) = @_;
+    my ($caller,$dom,$confname,$phase,$settings,$rowtotal) = @_;
     my ($css_class,$datatable);
     my %choices = &login_choices();
 
-    if ($position eq 'top') {
-        my %servers = &dom_servers($dom);
+    if ($caller eq 'service') {
+        my %servers = &Apache::lonnet::internet_dom_servers($dom);
         my $choice = $choices{'disallowlogin'};
         $css_class = ' class="LC_odd_row"';
         $datatable .= '<tr'.$css_class.'><td>'.$choice.'</td>'.
@@ -716,7 +840,7 @@ sub print_login {
                           '<td><select name="'.$lonhost.'_server">'.
                           '<option value=""'.$direct.'>'.$choices{'directlogin'}.
                           '</option>';
-            foreach my $hostid (keys(%servers)) {
+            foreach my $hostid (sort(keys(%servers))) {
                 next if ($servers{$hostid} eq $servers{$lonhost});
                 my $selected = '';
                 if (ref($disallowed{$lonhost}) eq 'HASH') {
@@ -756,132 +880,221 @@ sub print_login {
         }
         $datatable .= '</table></td></tr>';
         return $datatable;
-    }
-
-    my %defaultchecked = ( 
-                           'coursecatalog' => 'on',
-                           'adminmail'     => 'off',
-                           'newuser'       => 'off',
-                         );
-    my @toggles = ('coursecatalog','adminmail','newuser');
-    my (%checkedon,%checkedoff);
-    foreach my $item (@toggles) {
-        if ($defaultchecked{$item} eq 'on') { 
-            $checkedon{$item} = ' checked="checked" ';
-            $checkedoff{$item} = ' ';
-        } elsif ($defaultchecked{$item} eq 'off') {
-            $checkedoff{$item} = ' checked="checked" ';
-            $checkedon{$item} = ' ';
-        }
-    }
-    my @images = ('img','logo','domlogo','login');
-    my @logintext = ('textcol','bgcol');
-    my @bgs = ('pgbg','mainbg','sidebg');
-    my @links = ('link','alink','vlink');
-    my %designhash = &Apache::loncommon::get_domainconf($dom);
-    my %defaultdesign = %Apache::loncommon::defaultdesign;
-    my (%is_custom,%designs);
-    my %defaults = (
-                   font => $defaultdesign{'login.font'},
-                   );
-    foreach my $item (@images) {
-        $defaults{$item} = $defaultdesign{'login.'.$item};
-        $defaults{'showlogo'}{$item} = 1;
-    }
-    foreach my $item (@bgs) {
-        $defaults{'bgs'}{$item} = $defaultdesign{'login.'.$item};
-    }
-    foreach my $item (@logintext) {
-        $defaults{'logintext'}{$item} = $defaultdesign{'login.'.$item};
-    }
-    foreach my $item (@links) {
-        $defaults{'links'}{$item} = $defaultdesign{'login.'.$item};
-    }
-    if (ref($settings) eq 'HASH') {
+    } elsif ($caller eq 'page') {
+        my %defaultchecked = ( 
+                               'coursecatalog' => 'on',
+                               'helpdesk'      => 'on',
+                               'adminmail'     => 'off',
+                               'newuser'       => 'off',
+                             );
+        my @toggles = ('coursecatalog','adminmail','helpdesk','newuser');
+        my (%checkedon,%checkedoff);
         foreach my $item (@toggles) {
-            if ($settings->{$item} eq '1') {
-                $checkedon{$item} =  ' checked="checked" ';
+            if ($defaultchecked{$item} eq 'on') { 
+                $checkedon{$item} = ' checked="checked" ';
                 $checkedoff{$item} = ' ';
-            } elsif ($settings->{$item} eq '0') {
-                $checkedoff{$item} =  ' checked="checked" ';
+            } elsif ($defaultchecked{$item} eq 'off') {
+                $checkedoff{$item} = ' checked="checked" ';
                 $checkedon{$item} = ' ';
             }
         }
+        my @images = ('img','logo','domlogo','login');
+        my @logintext = ('textcol','bgcol');
+        my @bgs = ('pgbg','mainbg','sidebg');
+        my @links = ('link','alink','vlink');
+        my %designhash = &Apache::loncommon::get_domainconf($dom);
+        my %defaultdesign = %Apache::loncommon::defaultdesign;
+        my (%is_custom,%designs);
+        my %defaults = (
+                       font => $defaultdesign{'login.font'},
+                       );
         foreach my $item (@images) {
-            if (defined($settings->{$item})) {
-                $designs{$item} = $settings->{$item};
-                $is_custom{$item} = 1;
-            }
-            if (defined($settings->{'showlogo'}{$item})) {
-                $designs{'showlogo'}{$item} = $settings->{'showlogo'}{$item};
-            }
+            $defaults{$item} = $defaultdesign{'login.'.$item};
+            $defaults{'showlogo'}{$item} = 1;
+        }
+        foreach my $item (@bgs) {
+            $defaults{'bgs'}{$item} = $defaultdesign{'login.'.$item};
         }
         foreach my $item (@logintext) {
-            if ($settings->{$item} ne '') {
-                $designs{'logintext'}{$item} = $settings->{$item};
-                $is_custom{$item} = 1;
-            }
+            $defaults{'logintext'}{$item} = $defaultdesign{'login.'.$item};
         }
-        if ($settings->{'font'} ne '') {
-            $designs{'font'} = $settings->{'font'};
-            $is_custom{'font'} = 1;
+        foreach my $item (@links) {
+            $defaults{'links'}{$item} = $defaultdesign{'login.'.$item};
         }
-        foreach my $item (@bgs) {
-            if ($settings->{$item} ne '') {
-                $designs{'bgs'}{$item} = $settings->{$item};
-                $is_custom{$item} = 1;
+        if (ref($settings) eq 'HASH') {
+            foreach my $item (@toggles) {
+                if ($settings->{$item} eq '1') {
+                    $checkedon{$item} =  ' checked="checked" ';
+                    $checkedoff{$item} = ' ';
+                } elsif ($settings->{$item} eq '0') {
+                    $checkedoff{$item} =  ' checked="checked" ';
+                    $checkedon{$item} = ' ';
+                }
             }
-        }
-        foreach my $item (@links) {
-            if ($settings->{$item} ne '') {
-                $designs{'links'}{$item} = $settings->{$item};
-                $is_custom{$item} = 1;
+            foreach my $item (@images) {
+                if (defined($settings->{$item})) {
+                    $designs{$item} = $settings->{$item};
+                    $is_custom{$item} = 1;
+                }
+                if (defined($settings->{'showlogo'}{$item})) {
+                    $designs{'showlogo'}{$item} = $settings->{'showlogo'}{$item};
+                }
             }
-        }
-    } else {
-        if ($designhash{$dom.'.login.font'} ne '') {
-            $designs{'font'} = $designhash{$dom.'.login.font'};
-            $is_custom{'font'} = 1;
-        }
-        foreach my $item (@images) {
-            if ($designhash{$dom.'.login.'.$item} ne '') {
-                $designs{$item} = $designhash{$dom.'.login.'.$item};
-                $is_custom{$item} = 1;
+            foreach my $item (@logintext) {
+                if ($settings->{$item} ne '') {
+                    $designs{'logintext'}{$item} = $settings->{$item};
+                    $is_custom{$item} = 1;
+                }
+            }
+            if ($settings->{'font'} ne '') {
+                $designs{'font'} = $settings->{'font'};
+                $is_custom{'font'} = 1;
+            }
+            foreach my $item (@bgs) {
+                if ($settings->{$item} ne '') {
+                    $designs{'bgs'}{$item} = $settings->{$item};
+                    $is_custom{$item} = 1;
+                }
+            }
+            foreach my $item (@links) {
+                if ($settings->{$item} ne '') {
+                    $designs{'links'}{$item} = $settings->{$item};
+                    $is_custom{$item} = 1;
+                }
+            }
+        } else {
+            if ($designhash{$dom.'.login.font'} ne '') {
+                $designs{'font'} = $designhash{$dom.'.login.font'};
+                $is_custom{'font'} = 1;
+            }
+            foreach my $item (@images) {
+                if ($designhash{$dom.'.login.'.$item} ne '') {
+                    $designs{$item} = $designhash{$dom.'.login.'.$item};
+                    $is_custom{$item} = 1;
+                }
+            }
+            foreach my $item (@bgs) {
+                if ($designhash{$dom.'.login.'.$item} ne '') {
+                    $designs{'bgs'}{$item} = $designhash{$dom.'.login.'.$item};
+                    $is_custom{$item} = 1;
+                }
+            }
+            foreach my $item (@links) {
+                if ($designhash{$dom.'.login.'.$item} ne '') {
+                    $designs{'links'}{$item} = $designhash{$dom.'.login.'.$item};
+                    $is_custom{$item} = 1;
+                }
             }
         }
-        foreach my $item (@bgs) {
-            if ($designhash{$dom.'.login.'.$item} ne '') {
-                $designs{'bgs'}{$item} = $designhash{$dom.'.login.'.$item};
-                $is_custom{$item} = 1;
+        my %alt_text = &Apache::lonlocal::texthash  ( img => 'Log-in banner',
+                                                      logo => 'Institution Logo',
+                                                      domlogo => 'Domain Logo',
+                                                      login => 'Login box');
+        my $itemcount = 1;
+        foreach my $item (@toggles) {
+            $css_class = $itemcount%2?' class="LC_odd_row"':'';
+            $datatable .=  
+                '<tr'.$css_class.'><td colspan="2">'.$choices{$item}.
+                '</td><td>'.
+                '<span class="LC_nobreak"><label><input type="radio" name="'.
+                $item.'"'.$checkedon{$item}.' value="1" />'.&mt('Yes').
+                '</label>&nbsp;<label><input type="radio" name="'.$item.'"'.
+                $checkedoff{$item}.' value="0" />'.&mt('No').'</label></span></td>'.
+                '</tr>';
+            $itemcount ++;
+        }
+        $datatable .= &display_color_options($dom,$confname,$phase,'login',$itemcount,\%choices,\%is_custom,\%defaults,\%designs,\@images,\@bgs,\@links,\%alt_text,$rowtotal,\@logintext);
+        $datatable .= '</tr></table></td></tr>';
+    } elsif ($caller eq 'help') {
+        my ($defaulturl,$defaulttype,%url,%type,%lt,%langchoices);
+        my $switchserver = &check_switchserver($dom,$confname);
+        my $itemcount = 1;
+        $defaulturl = '/adm/loginproblems.html';
+        $defaulttype = 'default';
+        %lt = &Apache::lonlocal::texthash (
+                     del     => 'Delete?',
+                     rep     => 'Replace:',
+                     upl     => 'Upload:',
+                     default => 'Default',
+                     custom  => 'Custom',
+                                             );
+        %langchoices = &Apache::lonlocal::texthash(&get_languages_hash());
+        my @currlangs;
+        if (ref($settings) eq 'HASH') {
+            if (ref($settings->{'helpurl'}) eq 'HASH') {
+                foreach my $key (sort(keys(%{$settings->{'helpurl'}}))) {
+                    next if ($settings->{'helpurl'}{$key} eq '');
+                    $url{$key} = $settings->{'helpurl'}{$key}.'?inhibitmenu=yes';
+                    $type{$key} = 'custom';
+                    unless ($key eq 'nolang') {
+                        push(@currlangs,$key);
+                    }
+                }
+            } elsif ($settings->{'helpurl'} ne '') {
+                $type{'nolang'} = 'custom';
+                $url{'nolang'} = $settings->{'helpurl'}.'?inhibitmenu=yes';
+            }
+        }
+        foreach my $lang ('nolang',sort(@currlangs)) {
+            $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
+            $datatable .= '<tr'.$css_class.'>';
+            if ($url{$lang} eq '') {
+                $url{$lang} = $defaulturl;
+            }
+            if ($type{$lang} eq '') {
+                $type{$lang} = $defaulttype;
+            }
+            $datatable .= '<td colspan="2"><span class="LC_nobreak">';
+            if ($lang eq 'nolang') {
+                $datatable .= &mt('Log-in help page if no specific language file: [_1]',
+                                  &Apache::loncommon::modal_link($url{$lang},$lt{$type{$lang}},600,500));
+            } else {
+                $datatable .= &mt('Log-in help page for language: [_1] is [_2]',
+                                  $langchoices{$lang},
+                                  &Apache::loncommon::modal_link($url{$lang},$lt{$type{$lang}},600,500));
+            }
+            $datatable .= '</span></td>'."\n".
+                          '<td class="LC_left_item">';
+            if ($type{$lang} eq 'custom') {
+                $datatable .= '<span class="LC_nobreak"><label>'.
+                              '<input type="checkbox" name="loginhelpurl_del" value="'.$lang.'" />'.
+                              $lt{'del'}.'</label>&nbsp;'.$lt{'rep'}.'</span>';
+            } else {
+                $datatable .= $lt{'upl'};
             }
+            $datatable .='<br />';
+            if ($switchserver) {
+                $datatable .= &mt('Upload to library server: [_1]',$switchserver);
+            } else {
+                $datatable .= '<input type="file" name="loginhelpurl_'.$lang.'" />';
+            }
+            $datatable .= '</td></tr>';
+            $itemcount ++;
         }
-        foreach my $item (@links) {
-            if ($designhash{$dom.'.login.'.$item} ne '') {
-                $designs{'links'}{$item} = $designhash{$dom.'.login.'.$item};
-                $is_custom{$item} = 1;
+        my @addlangs;
+        foreach my $lang (sort(keys(%langchoices))) {
+            next if ((grep(/^\Q$lang\E$/,@currlangs)) || ($lang eq 'x_chef'));
+            push(@addlangs,$lang);
+        }
+        if (@addlangs > 0) {
+            my %toadd;
+            map { $toadd{$_} = $langchoices{$_} ; } @addlangs;
+            $toadd{''} = &mt('Select');
+            $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
+            $datatable .= '<tr'.$css_class.'><td class="LC_left_item" colspan="2">'.
+                          &mt('Add log-in help page for a specific language:').'&nbsp;'.
+                          &Apache::loncommon::select_form('','loginhelpurl_add_lang',\%toadd).
+                          '</td><td class="LC_left_item">'.$lt{'upl'}.'<br />';
+            if ($switchserver) {
+                $datatable .= &mt('Upload to library server: [_1]',$switchserver);
+            } else {
+                $datatable .= '<input type="file" name="loginhelpurl_add_file" />';
             }
+            $datatable .= '</td></tr>';
+            $itemcount ++;
         }
+        $datatable .= &captcha_choice('login',$settings,$itemcount);
     }
-    my %alt_text = &Apache::lonlocal::texthash  ( img => 'Log-in banner',
-                                                  logo => 'Institution Logo',
-                                                  domlogo => 'Domain Logo',
-                                                  login => 'Login box');
-    my $itemcount = 1;
-    my ($css_class,$datatable);
-    foreach my $item (@toggles) {
-        $css_class = $itemcount%2?' class="LC_odd_row"':'';
-        $datatable .=  
-            '<tr'.$css_class.'><td colspan="2">'.$choices{$item}.
-            '</td><td>'.
-            '<span class="LC_nobreak"><label><input type="radio" name="'.
-            $item.'"'.$checkedon{$item}.' value="1" />'.&mt('Yes').
-            '</label>&nbsp;<label><input type="radio" name="'.$item.'"'.
-            $checkedoff{$item}.' value="0" />'.&mt('No').'</label></span></td>'.
-            '</tr>';
-        $itemcount ++;
-    }
-    $datatable .= &display_color_options($dom,$confname,$phase,'login',$itemcount,\%choices,\%is_custom,\%defaults,\%designs,\@images,\@bgs,\@links,\%alt_text,$rowtotal,\@logintext);
-    $datatable .= '</tr></table></td></tr>';
     return $datatable;
 }
 
@@ -890,6 +1103,7 @@ sub login_choices {
         &Apache::lonlocal::texthash (
             coursecatalog => 'Display Course/Community Catalog link?',
             adminmail     => "Display Administrator's E-mail Address?",
+            helpdesk      => 'Display "Contact Helpdesk" link',
             disallowlogin => "Login page requests redirected",
             hostid        => "Server",
             server        => "Redirect to:",
@@ -1001,6 +1215,7 @@ sub print_rolecolors {
 sub display_color_options {
     my ($dom,$confname,$phase,$role,$itemcount,$choices,$is_custom,$defaults,$designs,
         $images,$bgs,$links,$alt_text,$rowtotal,$logintext) = @_;
+    my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
     my $css_class = $itemcount%2?' class="LC_odd_row"':'';
     my $datatable = '<tr'.$css_class.'>'.
         '<td>'.$choices->{'font'}.'</td>';
@@ -1009,13 +1224,12 @@ sub display_color_options {
     } else {
         $datatable .= '<td>&nbsp;</td>';
     }
-    my $fontlink = &color_pick($phase,$role,'font',$choices->{'font'},$designs->{'font'});
+    my $current_color = $designs->{'font'} ? $designs->{'font'} : $defaults->{'font'};
+
     $datatable .= '<td><span class="LC_nobreak">'.
-                  '<input type="text" size="10" name="'.$role.'_font"'.
-                  ' value="'.$designs->{'font'}.'" />&nbsp;'.$fontlink.
-                  '&nbsp;<span id="css_'.$role.'_font" style="background-color: '.
-                  $designs->{'font'}.';">&nbsp;&nbsp;&nbsp;</span>'.
-                  '</span></td></tr>';
+                  '<input type="text" class="colorchooser" size="10" name="'.$role.'_font"'.
+                  ' value="'.$current_color.'" />&nbsp;'. 
+                  '&nbsp;</td></tr>';
     unless ($role eq 'login') { 
         $datatable .= '<tr'.$css_class.'>'.
                       '<td>'.$choices->{'fontmenu'}.'</td>';
@@ -1024,13 +1238,13 @@ sub display_color_options {
         } else {
             $datatable .= '<td>&nbsp;</td>';
         }
-        $fontlink = &color_pick($phase,$role,'fontmenu',$choices->{'fontmenu'},$designs->{'fontmenu'});
+	$current_color = $designs->{'fontmenu'} ? 
+	    $designs->{'fontmenu'} : $defaults->{'fontmenu'};
         $datatable .= '<td><span class="LC_nobreak">'.
-                      '<input type="text" size="10" name="'.$role.'_fontmenu"'.
-                      ' value="'.$designs->{'fontmenu'}.'" />&nbsp;'.$fontlink.
-                      '&nbsp;<span id="css_'.$role.'_fontmenu" style="background-color: '.
-                      $designs->{'fontmenu'}.';">&nbsp;&nbsp;&nbsp;</span>'.
-                      '</span></td></tr>';
+                      '<input class="colorchooser" type="text" size="10" name="'
+		      .$role.'_fontmenu"'.
+                      ' value="'.$current_color.'" />&nbsp;'.
+                      '&nbsp;</td></tr>';
     }
     my $switchserver = &check_switchserver($dom,$confname);
     foreach my $img (@{$images}) {
@@ -1078,11 +1292,11 @@ sub display_color_options {
                 $showfile = $imgfile;
                 my $imgdir = $1;
                 my $filename = $2;
-                if (-e "/home/httpd/html/$imgdir/tn-".$filename) {
+                if (-e "$londocroot/$imgdir/tn-".$filename) {
                     $showfile = "/$imgdir/tn-".$filename;
                 } else {
-                    my $input = "/home/httpd/html".$imgfile;
-                    my $output = '/home/httpd/html/'.$imgdir.'/tn-'.$filename;
+                    my $input = $londocroot.$imgfile;
+                    my $output = "$londocroot/$imgdir/tn-".$filename;
                     if (!-e $output) {
                         my ($width,$height) = &thumb_dimensions();
                         my ($fullwidth,$fullheight) = &check_dimensions($input);
@@ -1090,7 +1304,7 @@ sub display_color_options {
                             if ($fullwidth > $width && $fullheight > $height) { 
                                 my $size = $width.'x'.$height;
                                 system("convert -sample $size $input $output");
-                                $showfile = '/'.$imgdir.'/tn-'.$filename;
+                                $showfile = "/$imgdir/tn-".$filename;
                             }
                         }
                     }
@@ -1157,13 +1371,14 @@ sub display_color_options {
     }
     $datatable .= '<td class="LC_right_item">'.
                   '<table border="0"><tr>';
+
     foreach my $item (@{$bgs}) {
-        my $link = &color_pick($phase,$role,$item,$choices->{$item},$designs->{'bgs'}{$item});
-        $datatable .= '<td align="center">'.$link;
+        $datatable .= '<td align="center">';
+	my $color = $designs->{'bgs'}{$item} ? $designs->{'bgs'}{$item} : $defaults->{'bgs'}{$item};
         if ($designs->{'bgs'}{$item}) {
-            $datatable .= '&nbsp;<span id="css_'.$role.'_'.$item.'" style="background-color: '.$designs->{'bgs'}{$item}.';">&nbsp;&nbsp;&nbsp;</span>';
+            $datatable .= '&nbsp;';
         }
-        $datatable .= '<br /><input type="text" size="8" name="'.$role.'_'.$item.'" value="'.$designs->{'bgs'}{$item}.
+        $datatable .= '<br /><input type="text" class="colorchooser" size="8" name="'.$role.'_'.$item.'" value="'.$color.
                       '" onblur = "javascript:colchg_span('."'css_".$role.'_'.$item."'".',this);" /></td>';
     }
     $datatable .= '</tr></table></td></tr>';
@@ -1185,13 +1400,13 @@ sub display_color_options {
     $datatable .= '<td class="LC_right_item">'.
                   '<table border="0"><tr>';
     foreach my $item (@{$links}) {
-        $datatable .= '<td align="center">'."\n".
-                      &color_pick($phase,$role,$item,$choices->{$item},
-                                  $designs->{'links'}{$item});
+	my $color = $designs->{'link'}{$item} ? $designs->{'link'}{$item} : $defaults->{'links'}{$item};
+        $datatable .= '<td align="center">'."\n";
+
         if ($designs->{'links'}{$item}) {
-            $datatable.='&nbsp;<span id="css_'.$role.'_'.$item.'" style="background-color: '.$designs->{'links'}{$item}.';">&nbsp;&nbsp;&nbsp;</span>';
+            $datatable.='&nbsp;';
         }
-        $datatable .= '<br /><input type="text" size="8" name="'.$role.'_'.$item.'" value="'.$designs->{'links'}{$item}.
+        $datatable .= '<br /><input type="text" size="8" class="colorchooser" name="'.$role.'_'.$item.'" value="'.$color.
                       '" /></td>';
     }
     $$rowtotal += $itemcount;
@@ -1318,14 +1533,19 @@ sub print_quotas {
         @options =('norequest','approval','validate','autolimit');
         %validations = &Apache::lonnet::auto_courserequest_checks($dom);
         %titles = &courserequest_titles();
+    } elsif ($context eq 'requestauthor') {
+        @usertools = ('author');
+        @options = ('norequest','approval','automatic');
+        %titles = &authorrequest_titles(); 
     } else {
-        @usertools = ('aboutme','blog','portfolio');
+        @usertools = ('aboutme','blog','webdav','portfolio');
         %titles = &tool_titles();
     }
     if (ref($types) eq 'ARRAY') {
         foreach my $type (@{$types}) {
             my $currdefquota;
-            unless ($context eq 'requestcourses') {
+            unless (($context eq 'requestcourses') ||
+                    ($context eq 'requestauthor')) {
                 if (ref($settings) eq 'HASH') {
                     if (ref($settings->{defaultquota}) eq 'HASH') {
                         $currdefquota = $settings->{defaultquota}->{$type}; 
@@ -1395,6 +1615,28 @@ sub print_quotas {
                                 $cell{$item} .= $titles{'unlimited'};
                             }
                         }
+                    } elsif ($context eq 'requestauthor') {
+                        my $curroption;
+                        if (ref($settings) eq 'HASH') {
+                            $curroption = $settings->{$type};
+                        }
+                        if (!$curroption) {
+                            $curroption = 'norequest';
+                        }
+                        foreach my $option (@options) {
+                            my $val = $option;
+                            if ($option eq 'norequest') {
+                                $val = 0;
+                            }
+                            my $checked = '';
+                            if ($option eq $curroption) {
+                                $checked = ' checked="checked"';
+                            }
+                            $datatable .= '<span class="LC_nobreak"><label>'.
+                                  '<input type="radio" name="authorreq_'.$type.
+                                  '" value="'.$val.'"'.$checked.' />'.
+                                  $titles{$option}.'</label></span>&nbsp; ';
+                        }
                     } else {
                         my $checked = 'checked="checked" ';
                         if (ref($settings) eq 'HASH') {
@@ -1420,7 +1662,8 @@ sub print_quotas {
                     $datatable .= '</tr></table>';
                 }
                 $datatable .= '</td>';
-                unless ($context eq 'requestcourses') {
+                unless (($context eq 'requestcourses') ||
+                        ($context eq 'requestauthor')) {
                     $datatable .= 
                               '<td class="LC_right_item"><span class="LC_nobreak">'.
                               '<input type="text" name="quota_'.$type.
@@ -1431,7 +1674,7 @@ sub print_quotas {
             }
         }
     }
-    unless ($context eq 'requestcourses') {
+    unless (($context eq 'requestcourses') || ($context eq 'requestauthor')) {
         $defaultquota = '20';
         if (ref($settings) eq 'HASH') {
             if (ref($settings->{'defaultquota'}) eq 'HASH') {
@@ -1501,6 +1744,28 @@ sub print_quotas {
                     $defcell{$item} .= $titles{'unlimited'};
                 }
             }
+        } elsif ($context eq 'requestauthor') {
+            my $curroption;
+            if (ref($settings) eq 'HASH') {
+                $curroption = $settings->{'default'};
+            }
+            if (!$curroption) {
+                $curroption = 'norequest';
+            }
+            foreach my $option (@options) {
+                my $val = $option;
+                if ($option eq 'norequest') {
+                    $val = 0;
+                }
+                my $checked = '';
+                if ($option eq $curroption) {
+                    $checked = ' checked="checked"';
+                }
+                $datatable .= '<span class="LC_nobreak"><label>'.
+                              '<input type="radio" name="authorreq_default"'.
+                              ' value="'.$val.'"'.$checked.' />'.
+                              $titles{$option}.'</label></span>&nbsp; ';
+            }
         } else {
             my $checked = 'checked="checked" ';
             if (ref($settings) eq 'HASH') {
@@ -1526,7 +1791,7 @@ sub print_quotas {
         $datatable .= '</tr></table>';
     }
     $datatable .= '</td>';
-    unless ($context eq 'requestcourses') {
+    unless (($context eq 'requestcourses') || ($context eq 'requestauthor')) {
         $datatable .= '<td class="LC_right_item"><span class="LC_nobreak">'.
                       '<input type="text" name="defaultquota" value="'.
                       $defaultquota.'" size="5" /> Mb</span></td>';
@@ -1604,6 +1869,33 @@ sub print_quotas {
                     $advcell{$item} .= $titles{'unlimited'};
                 }
             }
+        } elsif ($context eq 'requestauthor') {
+            my $curroption;
+            if (ref($settings) eq 'HASH') {
+                $curroption = $settings->{'_LC_adv'};
+            }
+            my $checked = '';
+            if ($curroption eq '') {
+                $checked = ' checked="checked"';
+            }
+            $datatable .= '<span class="LC_nobreak"><label>'.
+                          '<input type="radio" name="authorreq__LC_adv"'.
+                          ' value=""'.$checked.' />'.
+                          &mt('No override set').'</label></span>&nbsp; ';
+            foreach my $option (@options) {
+                my $val = $option;
+                if ($option eq 'norequest') {
+                    $val = 0;
+                }
+                my $checked = '';
+                if ($val eq $curroption) {
+                    $checked = ' checked="checked"';
+                }
+                $datatable .= '<span class="LC_nobreak"><label>'.
+                              '<input type="radio" name="authorreq__LC_adv"'.
+                              ' value="'.$val.'"'.$checked.' />'.
+                              $titles{$option}.'</label></span>&nbsp; ';
+            }
         } else {
             my $checked = 'checked="checked" ';
             if (ref($settings) eq 'HASH') {
@@ -1633,78 +1925,34 @@ sub print_quotas {
     return $datatable;
 }
 
-sub print_courserequestmail {
-    my ($dom,$settings,$rowtotal) = @_;
-    my ($now,$datatable,%dompersonnel,@domcoord,@currapproval,$rows);
+sub print_requestmail {
+    my ($dom,$action,$settings,$rowtotal) = @_;
+    my ($now,$datatable,%currapp,$rows);
     $now = time;
-    $rows = 0;
-    %dompersonnel = &Apache::lonnet::get_domain_roles($dom,['dc'],$now,$now);
-    foreach my $server (keys(%dompersonnel)) {
-        foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
-            my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
-            if (!grep(/^$uname:$udom$/,@domcoord)) {
-                push(@domcoord,$uname.':'.$udom);
-            }
-        }
-    }
     if (ref($settings) eq 'HASH') {
         if (ref($settings->{'notify'}) eq 'HASH') {
             if ($settings->{'notify'}{'approval'} ne '') {
-               @currapproval = split(',',$settings->{'notify'}{'approval'});
+               map {$currapp{$_}=1;} split(/,/,$settings->{'notify'}{'approval'});
             }
         }
     }
-    if (@currapproval) {
-        foreach my $dc (@currapproval) {
-            unless (grep(/^\Q$dc\E$/,@domcoord)) {
-                push(@domcoord,$dc);
-            }
-        }
-    }
-    @domcoord = sort(@domcoord);
-    my $numinrow = 4;
-    my $numdc = @domcoord;
+    my $numinrow = 2;
     my $css_class = 'class="LC_odd_row"';
-    $datatable = '<tr'.$css_class.'>'.
-                 ' <td>'.&mt('Receive notification of course requests requiring approval.').
-                 ' </td>'.
+    my $text;
+    if ($action eq 'requestcourses') {
+        $text = &mt('Receive notification of course requests requiring approval');
+    } else {
+        $text = &mt('Receive notification of authoring space requests requiring approval')
+    }
+    $datatable = '<tr '.$css_class.'>'.
+                 ' <td>'.$text.'</td>'.
                  ' <td class="LC_left_item">';
-    if (@domcoord > 0) {
-        $datatable .= '<table>';
-        for (my $i=0; $i<$numdc; $i++) {
-            my $rem = $i%($numinrow);
-            if ($rem == 0) {
-                if ($i > 0) {
-                    $datatable .= '</tr>';
-                }
-                $datatable .= '<tr>';
-                $rows ++;
-            }
-            my $check = ' ';
-            if (grep(/^\Q$domcoord[$i]\E$/,@currapproval)) {
-                $check = ' checked="checked" ';
-            }
-            my ($uname,$udom) = split(':',$domcoord[$i]);
-            my $fullname = &Apache::loncommon::plainname($uname,$udom);
-            if ($i == $numdc-1) {
-                my $colsleft = $numinrow-$rem;
-                if ($colsleft > 1) {
-                    $datatable .= '<td colspan="'.$colsleft.'" class="LC_left_item">';
-                } else {
-                    $datatable .= '<td class="LC_left_item">';
-                }
-            } else {
-                $datatable .= '<td class="LC_left_item">';
-            }
-            $datatable .= '<span class="LC_nobreak"><label>'.
-                          '<input type="checkbox" name="reqapprovalnotify" '.
-                          'value="'.$domcoord[$i].'"'.$check.'/>'.
-                          $fullname.'</label></span></td>';
-        }
-        $datatable .= '</tr></table>';
+    my ($numdc,$table,$rows) = &active_dc_picker($dom,$numinrow,'checkbox',
+                                                 'reqapprovalnotify',%currapp);
+    if ($numdc > 0) {
+        $datatable .= $table;
     } else {
         $datatable .= &mt('There are no active Domain Coordinators');
-        $rows ++;
     }
     $datatable .='</td></tr>';
     $$rowtotal += $rows;
@@ -1859,8 +2107,7 @@ sub print_autoupdate {
 
 sub print_autocreate {
     my ($dom,$settings,$rowtotal) = @_;
-    my (%createon,%createoff);
-    my $curr_dc;
+    my (%createon,%createoff,%currhash);
     my @types = ('xml','req');
     if (ref($settings) eq 'HASH') {
         foreach my $item (@types) {
@@ -1873,7 +2120,9 @@ sub print_autocreate {
                 }
             }
         }
-        $curr_dc = $settings->{'xmldc'};
+        if ($settings->{'xmldc'} ne '') { 
+            $currhash{$settings->{'xmldc'}} = 1;
+        }
     } else {
         foreach my $item (@types) {
             $createoff{$item} = ' checked="checked" ';
@@ -1881,30 +2130,31 @@ sub print_autocreate {
         }
     }
     $$rowtotal += 2;
+    my $numinrow = 2;
     my $datatable='<tr class="LC_odd_row">'.
                   '<td>'.&mt('Create pending official courses from XML files').'</td>'.
                   '<td class="LC_right_item"><span class="LC_nobreak"><label>'.
                   '<input type="radio" name="autocreate_xml"'.
                   $createon{'xml'}.' value="1" />'.&mt('Yes').'</label>&nbsp;'.
                   '<label><input type="radio" name="autocreate_xml"'.
-                  $createoff{'xml'}.' value="0" />'.&mt('No').'</label></span>';
-    my ($numdc,$dctable) = &active_dc_picker($dom,$curr_dc);
-    if ($numdc > 1) {
-        $datatable .= '</td><tr><td>'.
-                      &mt('XML files processed as: (choose Dom. Coord.)'). 
-                      '</td><td class="LC_left_item">'.$dctable.'</td></tr>'.
-                      '<tr class="LC_odd_row">';
-        $$rowtotal ++ ;
-    } else {
-        $datatable .= '</td></tr><tr>';
-    }
-    $datatable .= '<td>'.&mt('Create pending requests for official courses (if validated)').'</td>'.
+                  $createoff{'xml'}.' value="0" />'.&mt('No').'</label></span>'.
+                  '</td></tr><tr>'.
+                  '<td>'.&mt('Create pending requests for official courses (if validated)').'</td>'.
                   '<td class="LC_right_item"><span class="LC_nobreak"><label>'.
                   '<input type="radio" name="autocreate_req"'.
                   $createon{'req'}.' value="1" />'.&mt('Yes').'</label>&nbsp;'.
                   '<label><input type="radio" name="autocreate_req"'.
-                  $createoff{'req'}.' value="0" />'.&mt('No').'</label></span></td>'.
-                  '</tr>';
+                  $createoff{'req'}.' value="0" />'.&mt('No').'</label></span>';
+    my ($numdc,$dctable,$rows) = &active_dc_picker($dom,$numinrow,'radio',
+                                                   'autocreate_xmldc',%currhash);
+    if ($numdc > 1) {
+        $datatable .= '</td></tr><tr class="LC_odd_row"><td>'.
+                      &mt('Course creation processed as: (choose Dom. Coord.)').
+                      '</td><td class="LC_left_item">'.$dctable.'</td></tr>';
+    } else {
+        $datatable .= $dctable.'</td></tr>';
+    }
+    $$rowtotal += $rows;
     return $datatable;
 }
 
@@ -2027,7 +2277,7 @@ sub print_contacts {
     my @contacts = ('adminemail','supportemail');
     my (%checked,%to,%otheremails,%bccemails);
     my @mailings = ('errormail','packagesmail','lonstatusmail','helpdeskmail',
-                    'requestsmail');
+                    'requestsmail','updatesmail');
     foreach my $type (@mailings) {
         $otheremails{$type} = '';
     }
@@ -2063,6 +2313,7 @@ sub print_contacts {
         $checked{'helpdeskmail'}{'supportemail'} = ' checked="checked" ';
         $checked{'lonstatusmail'}{'adminemail'} = ' checked="checked" '; 
         $checked{'requestsmail'}{'adminemail'} = ' checked="checked" ';
+        $checked{'updatesmail'}{'adminemail'} = ' checked="checked" ';
     }
     my ($titles,$short_titles) = &contact_titles();
     my $rownum = 0;
@@ -2106,101 +2357,24 @@ sub print_contacts {
 }
 
 sub print_helpsettings {
+    my ($dom,$confname,$settings,$rowtotal) = @_;
+    my ($datatable,$itemcount);
+    $itemcount = 1;
+    my (%choices,%defaultchecked,@toggles);
+    $choices{'submitbugs'} = &mt('Display link to: [_1]?',
+                                 &Apache::loncommon::modal_link('http://bugs.loncapa.org',
+                                 &mt('LON-CAPA bug tracker'),600,500));
+    %defaultchecked = ('submitbugs' => 'on');
+    @toggles = ('submitbugs',);
 
-	my ($position,$dom,$confname,$settings,$rowtotal) = @_;
-	my ($css_class,$datatable);
-	
-	my $switchserver = &check_switchserver($dom,$confname);
-	
-	my $itemcount = 1;
-	
-	if ($position eq 'top') {
-		
-		my (%checkedon,%checkedoff,%choices,%defaultchecked,@toggles);
-		
-		%choices =
-			&Apache::lonlocal::texthash (
-				submitbugs => 'Display &quot;Submit a bug&quot; link?',
-		);
-		
-		%defaultchecked = ('submitbugs' => 'on');
-		
-		@toggles = ('submitbugs',);
-		
-		foreach my $item (@toggles) {
-			if ($defaultchecked{$item} eq 'on') { 
-				$checkedon{$item} = ' checked="checked" ';
-				$checkedoff{$item} = ' ';
-			} elsif ($defaultchecked{$item} eq 'off') {
-				$checkedoff{$item} = ' checked="checked" ';
-				$checkedon{$item} = ' ';
-			}
-		}
-		
-		if (ref($settings) eq 'HASH') {
-			foreach my $item (@toggles) {
-				if ($settings->{$item} eq '1') {
-					$checkedon{$item} =  ' checked="checked" ';
-					$checkedoff{$item} = ' ';
-				} elsif ($settings->{$item} eq '0') {
-					$checkedoff{$item} =  ' checked="checked" ';
-					$checkedon{$item} = ' ';
-				}
-			}
-		 }
-		
-		 foreach my $item (@toggles) {
-			$css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
-			$datatable .=  
-				'<tr'.$css_class.'>
-				<td><span class="LC_nobreak">'.$choices{$item}.'</span></td>
-				<td><span class="LC_nobreak">&nbsp;</span></td>
-				<td class="LC_right_item"><span class="LC_nobreak">
-				<label><input type="radio" name="'.$item.'" '.$checkedon{$item}.' value="1" />'.&mt('Yes').'</label>&nbsp;
-				<label><input type="radio" name="'.$item.'" '.$checkedoff{$item}.' value="0" />'.&mt('No').'</label>'.
-				'</span></td>'.
-				'</tr>';
-			$itemcount ++;
-		 }
-     
-     } else {
-     
-     	$css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
-     	
-     	$datatable .= '<tr'.$css_class.'>';
-     	
-     	if (ref($settings) eq 'HASH') {
-			if ($settings->{'loginhelpurl'} ne '') {
-				my($directory, $filename) = $settings->{'loginhelpurl'} =~ m/(.*\/)(.*)$/;
-				$datatable .= '<td width="33%"><span class="LC_left_item"><label><a href="'.$settings->{'loginhelpurl'}.'" target="_blank">'.&mt('Custom Login Page Help File In Use').'</a></label></span></td>';
-				$datatable .= '<td width="33%"><span class="LC_right_item"><label><input type="checkbox" name="loginhelpurl_del" value="1" />'.&mt('Delete?').'</label></span></td>'
-			} else {
-				$datatable .= '<td width="33%"><span class="LC_left_item"><label>'.&mt('Default Login Page Help File In Use').'</label></span></td>';
-				$datatable .= '<td width="33%"><span class="LC_right_item">&nbsp;</span></td>';
-			}
-		} else {
-			$datatable .= '<td><span class="LC_left_item">&nbsp;</span></td>';
-			$datatable .= '<td><span class="LC_right_item">&nbsp;</span></td>';
-		}
-    	
-     	$datatable .= '<td width="33%"><span class="LC_right_item">';
-     	if ($switchserver) {
-            $datatable .= &mt('Upload to library server: [_1]',$switchserver);
-        } else {
-        	$datatable .= &mt('Upload Custom Login Page Help File:');
-            $datatable .='<input type="file" name="loginhelpurl" />';
-        }
-        $datatable .= '</span></td></tr>';
-        
-     }
-     
-     return $datatable;
-	
+    ($datatable,$itemcount) = &radiobutton_prefs($settings,\@toggles,\%defaultchecked,
+                                                 \%choices,$itemcount);
+    return $datatable;
 }
 
-
 sub radiobutton_prefs {
-    my ($settings,$toggles,$defaultchecked,$choices,$itemcount) = @_;
+    my ($settings,$toggles,$defaultchecked,$choices,$itemcount,$onclick,
+        $additional) = @_;
     return unless ((ref($toggles) eq 'ARRAY') && (ref($defaultchecked) eq 'HASH') &&
                    (ref($choices) eq 'HASH'));
 
@@ -2226,17 +2400,22 @@ sub radiobutton_prefs {
             }
         }
     }
+    if ($onclick) {
+        $onclick = ' onclick="'.$onclick.'"';
+    }
     foreach my $item (@{$toggles}) {
         $css_class = $itemcount%2?' class="LC_odd_row"':'';
         $datatable .=
-            '<tr'.$css_class.'><td><span class="LC_nobreak">'.$choices->{$item}.
+            '<tr'.$css_class.'><td valign="top">'.
+            '<span class="LC_nobreak">'.$choices->{$item}.
             '</span></td>'.
             '<td class="LC_right_item"><span class="LC_nobreak">'.
             '<label><input type="radio" name="'.
-            $item.'" '.$checkedon{$item}.' value="1" />'.&mt('Yes').
+            $item.'" '.$checkedon{$item}.' value="1"'.$onclick.' />'.&mt('Yes').
             '</label>&nbsp;<label><input type="radio" name="'.$item.'" '.
-            $checkedoff{$item}.' value="0" />'.&mt('No').'</label>'.
-            '</span></td>'.
+            $checkedoff{$item}.' value="0"'.$onclick.' />'.&mt('No').'</label>'.
+            '</span>'.$additional.
+            '</td>'.
             '</tr>';
         $itemcount ++;
     }
@@ -2245,28 +2424,31 @@ sub radiobutton_prefs {
 
 sub print_coursedefaults {
     my ($position,$dom,$settings,$rowtotal) = @_;
-    my ($css_class,$datatable);
+    my ($css_class,$datatable,%checkedon,%checkedoff,%defaultchecked,@toggles);
     my $itemcount = 1;
+    my %choices =  &Apache::lonlocal::texthash (
+        canuse_pdfforms      => 'Course/Community users can create/upload PDF forms',
+        anonsurvey_threshold => 'Responder count needed before showing submissions for anonymous surveys',
+        coursecredits        => 'Credits can be specified for courses',
+    );
     if ($position eq 'top') {
-        my (%checkedon,%checkedoff,%choices,%defaultchecked,@toggles);
-        %choices =
-            &Apache::lonlocal::texthash (
-                canuse_pdfforms => 'Course/Community users can create/upload PDF forms',
-        );
         %defaultchecked = ('canuse_pdfforms' => 'off');
-        @toggles = ('canuse_pdfforms',);
+        @toggles = ('canuse_pdfforms');
         ($datatable,$itemcount) = &radiobutton_prefs($settings,\@toggles,\%defaultchecked,
                                                  \%choices,$itemcount);
-        $$rowtotal += $itemcount;
     } else {
         $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
-        my %choices =
-            &Apache::lonlocal::texthash (
-                anonsurvey_threshold => 'Responder count needed before showing submissions for anonymous surveys',
-        );
-        my $currdefresponder;
+        my ($currdefresponder,$def_official_credits,$def_unofficial_credits);
+        my $currusecredits = 0;
         if (ref($settings) eq 'HASH') {
             $currdefresponder = $settings->{'anonsurvey_threshold'};
+            if (ref($settings->{'coursecredits'}) eq 'HASH') {
+                $def_official_credits = $settings->{'coursecredits'}->{'official'};
+                $def_unofficial_credits = $settings->{'coursecredits'}->{'unofficial'};
+                if (($def_official_credits ne '') || ($def_unofficial_credits ne '')) {
+                    $currusecredits = 1;
+                }
+            }
         }
         if (!$currdefresponder) {
             $currdefresponder = 10;
@@ -2274,13 +2456,41 @@ sub print_coursedefaults {
             $currdefresponder = 1;
         }
         $datatable .=
-               '<tr'.$css_class.'><td><span class="LC_nobreak">'.$choices{'anonsurvey_threshold'}.
+                '<tr'.$css_class.'><td><span class="LC_nobreak">'.
+                $choices{'anonsurvey_threshold'}.
                 '</span></td>'.
                 '<td class="LC_right_item"><span class="LC_nobreak">'.
                 '<input type="text" name="anonsurvey_threshold"'.
                 ' value="'.$currdefresponder.'" size="5" /></span>'.
-                '</td></tr>';
+                '</td></tr>'."\n";
+        $itemcount ++;
+        my $onclick = 'toggleCredits(this.form);';
+        my $display = 'none';  
+        if ($currusecredits) {
+            $display = 'block';
+        }
+        my $additional = '<div id="credits" style="display: '.$display.'">'.
+                         '<span class="LC_nobreak">'.
+                         &mt('Default credits for official courses [_1]',
+                         '<input type="text" name="official_credits" value="'.
+                         $def_official_credits.'" size="3" />').
+                         '</span><br />'.
+                         '<span class="LC_nobreak">'.
+                         &mt('Default credits for unofficial courses [_1]',
+                         '<input type="text" name="unofficial_credits" value="'.
+                         $def_unofficial_credits.'" size="3" />').
+                         '</span></div>'."\n";
+        %defaultchecked = ('coursecredits' => 'off');
+        @toggles = ('coursecredits');
+        my $current = {
+                        'coursecredits' => $currusecredits,
+                      };
+        (my $table,$itemcount) =
+            &radiobutton_prefs($current,\@toggles,\%defaultchecked,
+                               \%choices,$itemcount,$onclick,$additional);
+        $datatable .= $table;
     }
+    $$rowtotal += $itemcount;
     return $datatable;
 }
 
@@ -2289,118 +2499,132 @@ sub print_usersessions {
     my ($css_class,$datatable,%checked,%choices);
     my (%by_ip,%by_location,@intdoms);
     &build_location_hashes(\@intdoms,\%by_ip,\%by_location);
-    if (keys(%by_location) == 0) {
-        if ($position eq 'top') {
-            $datatable .= '<tr'.$css_class.'><td colspan="2">'.
-                          &mt('Nothing to set here, as the cluster to which this domain belongs only contains this institution.');
-        }
-    }
-    my %lt = &usersession_titles();
+
+    my @alldoms = &Apache::lonnet::all_domains();
+    my %serverhomes = %Apache::lonnet::serverhomeIDs;
+    my %servers = &Apache::lonnet::internet_dom_servers($dom);
+    my %altids = &id_for_thisdom(%servers);
     my $itemcount = 1;
-    my $numinrow = 5;
-    my $prefix;
-    my @types;
     if ($position eq 'top') {
-        $prefix = 'hosted';
-        @types = ('excludedomain','includedomain');
+        if (keys(%serverhomes) > 1) {
+            my %spareid = &current_offloads_to($dom,$settings,\%servers);
+            $datatable .= &spares_row($dom,\%servers,\%spareid,\%serverhomes,\%altids,$rowtotal);
+        } else {
+            $datatable .= '<tr'.$css_class.'><td colspan="2">'.
+                          &mt('Nothing to set here, as the cluster to which this domain belongs only contains one server.');
+        }
     } else {
-        $prefix = 'remote';
-        @types = ('version','excludedomain','includedomain');
-    }
-    my (%current,%checkedon,%checkedoff);
-    my @lcversions = &Apache::lonnet::all_loncaparevs();
-    my @locations = sort(keys(%by_location));
-    foreach my $type (@types) {
-        $checkedon{$type} = '';
-        $checkedoff{$type} = ' checked="checked"';
-    }
-    if (ref($settings) eq 'HASH') {
-        if (ref($settings->{$prefix}) eq 'HASH') {
-            foreach my $key (keys(%{$settings->{$prefix}})) {
-                $current{$key} = $settings->{$prefix}{$key};
-                if ($key eq 'version') {
-                    if ($current{$key} ne '') {
-                        $checkedon{$key} = ' checked="checked"';
-                        $checkedoff{$key} = '';
-                    }
-                } elsif (ref($current{$key}) eq 'ARRAY') {
-                    $checkedon{$key} = ' checked="checked"';
-                    $checkedoff{$key} = '';
-                }
+        if (keys(%by_location) == 0) {
+            $datatable .= '<tr'.$css_class.'><td colspan="2">'.
+                          &mt('Nothing to set here, as the cluster to which this domain belongs only contains one institution.');
+        } else {
+            my %lt = &usersession_titles();
+            my $numinrow = 5;
+            my $prefix;
+            my @types;
+            if ($position eq 'bottom') {
+                $prefix = 'remote';
+                @types = ('version','excludedomain','includedomain');
+            } else {
+                $prefix = 'hosted';
+                @types = ('excludedomain','includedomain');
             }
-        }
-    }
-    foreach my $type (@types) {
-        next if ($type ne 'version' && !@locations);
-        $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
-        $datatable .= '<tr'.$css_class.'>
-                       <td><span class="LC_nobreak">'.$lt{$type}.'</span><br />
-                           <span class="LC_nobreak">&nbsp;
-                           <label><input type="radio" name="'.$prefix.'_'.$type.'_inuse" '.$checkedoff{$type}.' value="0" />'.&mt('Not in use').'</label>&nbsp;
-                           <label><input type="radio" name="'.$prefix.'_'.$type.'_inuse" '.$checkedon{$type}.' value="1" />'.&mt('In use').'</label></span></td><td>';
-        if ($type eq 'version') {
-            my $selector = '<select name="'.$prefix.'_version">';
-            foreach my $version (@lcversions) {
-                my $selected = '';
-                if ($current{'version'} eq $version) {
-                    $selected = ' selected="selected"';
+            my (%current,%checkedon,%checkedoff);
+            my @lcversions = &Apache::lonnet::all_loncaparevs();
+            my @locations = sort(keys(%by_location));
+            foreach my $type (@types) {
+                $checkedon{$type} = '';
+                $checkedoff{$type} = ' checked="checked"';
+            }
+            if (ref($settings) eq 'HASH') {
+                if (ref($settings->{$prefix}) eq 'HASH') {
+                    foreach my $key (keys(%{$settings->{$prefix}})) {
+                        $current{$key} = $settings->{$prefix}{$key};
+                        if ($key eq 'version') {
+                            if ($current{$key} ne '') {
+                                $checkedon{$key} = ' checked="checked"';
+                                $checkedoff{$key} = '';
+                            }
+                        } elsif (ref($current{$key}) eq 'ARRAY') {
+                            $checkedon{$key} = ' checked="checked"';
+                            $checkedoff{$key} = '';
+                        }
+                    }
                 }
-                $selector .= ' <option value="'.$version.'"'.
-                             $selected.'>'.$version.'</option>';
             }
-            $selector .= '</select> ';
-            $datatable .= &mt('remote server must be version: [_1] or later',$selector);
-        } else {
-            $datatable.= '<div><input type="button" value="'.&mt('check all').'" '.
-                         'onclick="javascript:checkAll(document.display.'.$prefix.'_'.$type.')"'.
-                         ' />'.('&nbsp;'x2).
-                         '<input type="button" value="'.&mt('uncheck all').'" '.
-                         'onclick="javascript:uncheckAll(document.display.'.$prefix.'_'.$type.')" />'.
-                         "\n".
-                         '</div><div><table>';
-            my $rem;
-            for (my $i=0; $i<@locations; $i++) {
-                my ($showloc,$value,$checkedtype);
-                if (ref($by_location{$locations[$i]}) eq 'ARRAY') {
-                    my $ip = $by_location{$locations[$i]}->[0];
-                    if (ref($by_ip{$ip}) eq 'ARRAY') {
-                        $value = join(':',@{$by_ip{$ip}});
-                        $showloc = join(', ',@{$by_ip{$ip}});
-                        if (ref($current{$type}) eq 'ARRAY') {
-                            foreach my $loc (@{$by_ip{$ip}}) {  
-                                if (grep(/^\Q$loc\E$/,@{$current{$type}})) {
-                                    $checkedtype = ' checked="checked"';
-                                    last;
+            foreach my $type (@types) {
+                next if ($type ne 'version' && !@locations);
+                $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
+                $datatable .= '<tr'.$css_class.'>
+                               <td><span class="LC_nobreak">'.$lt{$type}.'</span><br />
+                               <span class="LC_nobreak">&nbsp;
+                               <label><input type="radio" name="'.$prefix.'_'.$type.'_inuse" '.$checkedoff{$type}.' value="0" />'.&mt('Not in use').'</label>&nbsp;
+                               <label><input type="radio" name="'.$prefix.'_'.$type.'_inuse" '.$checkedon{$type}.' value="1" />'.&mt('In use').'</label></span></td><td>';
+                if ($type eq 'version') {
+                    my $selector = '<select name="'.$prefix.'_version">';
+                    foreach my $version (@lcversions) {
+                        my $selected = '';
+                        if ($current{'version'} eq $version) {
+                            $selected = ' selected="selected"';
+                        }
+                        $selector .= ' <option value="'.$version.'"'.
+                                     $selected.'>'.$version.'</option>';
+                    }
+                    $selector .= '</select> ';
+                    $datatable .= &mt('remote server must be version: [_1] or later',$selector);
+                } else {
+                    $datatable.= '<div><input type="button" value="'.&mt('check all').'" '.
+                                 'onclick="javascript:checkAll(document.display.'.$prefix.'_'.$type.')"'.
+                                 ' />'.('&nbsp;'x2).
+                                 '<input type="button" value="'.&mt('uncheck all').'" '.
+                                 'onclick="javascript:uncheckAll(document.display.'.$prefix.'_'.$type.')" />'.
+                                 "\n".
+                                 '</div><div><table>';
+                    my $rem;
+                    for (my $i=0; $i<@locations; $i++) {
+                        my ($showloc,$value,$checkedtype);
+                        if (ref($by_location{$locations[$i]}) eq 'ARRAY') {
+                            my $ip = $by_location{$locations[$i]}->[0];
+                            if (ref($by_ip{$ip}) eq 'ARRAY') {
+                                 $value = join(':',@{$by_ip{$ip}});
+                                $showloc = join(', ',@{$by_ip{$ip}});
+                                if (ref($current{$type}) eq 'ARRAY') {
+                                    foreach my $loc (@{$by_ip{$ip}}) {  
+                                        if (grep(/^\Q$loc\E$/,@{$current{$type}})) {
+                                            $checkedtype = ' checked="checked"';
+                                            last;
+                                        }
+                                    }
                                 }
                             }
                         }
+                        $rem = $i%($numinrow);
+                        if ($rem == 0) {
+                            if ($i > 0) {
+                                $datatable .= '</tr>';
+                            }
+                            $datatable .= '<tr>';
+                        }
+                        $datatable .= '<td class="LC_left_item">'.
+                                      '<span class="LC_nobreak"><label>'.
+                                      '<input type="checkbox" name="'.$prefix.'_'.$type.
+                                      '" value="'.$value.'"'.$checkedtype.' />'.$showloc.
+                                      '</label></span></td>';
                     }
-                }
-                $rem = $i%($numinrow);
-                if ($rem == 0) {
-                    if ($i > 0) {
-                        $datatable .= '</tr>';
+                    $rem = @locations%($numinrow);
+                    my $colsleft = $numinrow - $rem;
+                    if ($colsleft > 1 ) {
+                        $datatable .= '<td colspan="'.$colsleft.'" class="LC_left_item">'.
+                                      '&nbsp;</td>';
+                    } elsif ($colsleft == 1) {
+                        $datatable .= '<td class="LC_left_item">&nbsp;</td>';
                     }
-                    $datatable .= '<tr>';
+                    $datatable .= '</tr></table>';
                 }
-                $datatable .= '<td class="LC_left_item">'.
-                              '<span class="LC_nobreak"><label>'.
-                              '<input type="checkbox" name="'.$prefix.'_'.$type.
-                              '" value="'.$value.'"'.$checkedtype.' />'.$showloc.
-                              '</label></span></td>';
-            }
-            $rem = @locations%($numinrow);
-            my $colsleft = $numinrow - $rem;
-            if ($colsleft > 1 ) {
-                $datatable .= '<td colspan="'.$colsleft.'" class="LC_left_item">'.
-                              '&nbsp;</td>';
-            } elsif ($colsleft == 1) {
-                $datatable .= '<td class="LC_left_item">&nbsp;</td>';
+                $datatable .= '</td></tr>';
+                $itemcount ++;
             }
-            $datatable .= '</tr></table>';
         }
-        $datatable .= '</td></tr>';
-        $itemcount ++;
     }
     $$rowtotal += $itemcount;
     return $datatable;
@@ -2454,6 +2678,560 @@ sub build_location_hashes {
     return;
 }
 
+sub current_offloads_to {
+    my ($dom,$settings,$servers) = @_;
+    my (%spareid,%otherdomconfigs);
+    if (ref($servers) eq 'HASH') {
+        foreach my $lonhost (sort(keys(%{$servers}))) {
+            my $gotspares;
+            if (ref($settings) eq 'HASH') {
+                if (ref($settings->{'spares'}) eq 'HASH') {
+                    if (ref($settings->{'spares'}{$lonhost}) eq 'HASH') {
+                        $spareid{$lonhost}{'primary'} = $settings->{'spares'}{$lonhost}{'primary'};
+                        $spareid{$lonhost}{'default'} = $settings->{'spares'}{$lonhost}{'default'};
+                        $gotspares = 1;
+                    }
+                }
+            }
+            unless ($gotspares) {
+                my $gotspares;
+                my $serverhomeID =
+                    &Apache::lonnet::get_server_homeID($servers->{$lonhost});
+                my $serverhomedom =
+                    &Apache::lonnet::host_domain($serverhomeID);
+                if ($serverhomedom ne $dom) {
+                    if (ref($otherdomconfigs{$serverhomedom} eq 'HASH')) {
+                        if (ref($otherdomconfigs{$serverhomedom}{'usersessions'}) eq 'HASH') {
+                            if (ref($otherdomconfigs{$serverhomedom}{'usersessions'}{'spares'}) eq 'HASH') {
+                                $spareid{$lonhost}{'primary'} = $otherdomconfigs{$serverhomedom}{'usersessions'}{'spares'}{'primary'};
+                                $spareid{$lonhost}{'default'} = $otherdomconfigs{$serverhomedom}{'usersessions'}{'spares'}{'default'};
+                                $gotspares = 1;
+                            }
+                        }
+                    } else {
+                        $otherdomconfigs{$serverhomedom} =
+                            &Apache::lonnet::get_dom('configuration',['usersessions'],$serverhomedom);
+                        if (ref($otherdomconfigs{$serverhomedom}) eq 'HASH') {
+                            if (ref($otherdomconfigs{$serverhomedom}{'usersessions'}) eq 'HASH') {
+                                if (ref($otherdomconfigs{$serverhomedom}{'usersessions'}{'spares'}) eq 'HASH') {
+                                    if (ref($otherdomconfigs{$serverhomedom}{'usersessions'}{'spares'}{$lonhost}) eq 'HASH') {
+                                        $spareid{$lonhost}{'primary'} = $otherdomconfigs{$serverhomedom}{'usersessions'}{'spares'}{'primary'};
+                                        $spareid{$lonhost}{'default'} = $otherdomconfigs{$serverhomedom}{'usersessions'}{'spares'}{'default'};
+                                        $gotspares = 1;
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            unless ($gotspares) {
+                if ($lonhost eq $Apache::lonnet::perlvar{'lonHostID'}) {
+                    $spareid{$lonhost}{'primary'} = $Apache::lonnet::spareid{'primary'};
+                    $spareid{$lonhost}{'default'} = $Apache::lonnet::spareid{'default'};
+               } else {
+                    my $server_hostname = &Apache::lonnet::hostname($lonhost);
+                    my $server_homeID = &Apache::lonnet::get_server_homeID($server_hostname);
+                    if ($server_homeID eq $Apache::lonnet::perlvar{'lonHostID'}) {
+                        $spareid{$lonhost}{'primary'} = $Apache::lonnet::spareid{'primary'};
+                        $spareid{$lonhost}{'default'} = $Apache::lonnet::spareid{'default'};
+                    } else {
+                        my %what = (
+                             spareid => 1,
+                        );
+                        my ($result,$returnhash) = 
+                            &Apache::lonnet::get_remote_globals($lonhost,\%what);
+                        if ($result eq 'ok') { 
+                            if (ref($returnhash) eq 'HASH') {
+                                if (ref($returnhash->{'spareid'}) eq 'HASH') {
+                                    $spareid{$lonhost}{'primary'} = $returnhash->{'spareid'}->{'primary'};
+                                    $spareid{$lonhost}{'default'} = $returnhash->{'spareid'}->{'default'};
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+    return %spareid;
+}
+
+sub spares_row {
+    my ($dom,$servers,$spareid,$serverhomes,$altids,$rowtotal) = @_;
+    my $css_class;
+    my $numinrow = 4;
+    my $itemcount = 1;
+    my $datatable;
+    my %typetitles = &sparestype_titles();
+    if ((ref($servers) eq 'HASH') && (ref($spareid) eq 'HASH') && (ref($altids) eq 'HASH')) {
+        foreach my $server (sort(keys(%{$servers}))) {
+            my $serverhome = &Apache::lonnet::get_server_homeID($servers->{$server});
+            my ($othercontrol,$serverdom);
+            if ($serverhome ne $server) {
+                $serverdom = &Apache::lonnet::host_domain($serverhome);
+                $othercontrol = &mt('Session offloading controlled by domain: [_1]','<b>'.$serverdom.'</b>');
+            } else {
+                $serverdom = &Apache::lonnet::host_domain($server);
+                if ($serverdom ne $dom) {
+                    $othercontrol = &mt('Session offloading controlled by domain: [_1]','<b>'.$serverdom.'</b>');
+                }
+            }
+            next unless (ref($spareid->{$server}) eq 'HASH');
+            $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
+            $datatable .= '<tr'.$css_class.'>
+                           <td rowspan="2">
+                            <span class="LC_nobreak">'.
+                          &mt('[_1] when busy, offloads to:'
+                              ,'<b>'.$server.'</b>').
+                          "\n";
+            my (%current,%canselect);
+            my @choices = 
+                &possible_newspares($server,$spareid->{$server},$serverhomes,$altids);
+            foreach my $type ('primary','default') {
+                if (ref($spareid->{$server}) eq 'HASH') {
+                    if (ref($spareid->{$server}{$type}) eq 'ARRAY') {
+                        my @spares = @{$spareid->{$server}{$type}};
+                        if (@spares > 0) {
+                            if ($othercontrol) {
+                                $current{$type} = join(', ',@spares);
+                            } else {
+                                $current{$type} .= '<table>';
+                                my $numspares = scalar(@spares);
+                                for (my $i=0;  $i<@spares; $i++) {
+                                    my $rem = $i%($numinrow);
+                                    if ($rem == 0) {
+                                        if ($i > 0) {
+                                            $current{$type} .= '</tr>';
+                                        }
+                                        $current{$type} .= '<tr>';
+                                    }
+                                    $current{$type} .= '<td><label><input type="checkbox" name="spare_'.$type.'_'.$server.'" id="spare_'.$type.'_'.$server.'_'.$i.'" checked="checked" value="'.$spareid->{$server}{$type}[$i].'" onclick="updateNewSpares(this.form,'."'$server'".');" />&nbsp;'.
+                                                       $spareid->{$server}{$type}[$i].
+                                                       '</label></td>'."\n";
+                                }
+                                my $rem = @spares%($numinrow);
+                                my $colsleft = $numinrow - $rem;
+                                if ($colsleft > 1 ) {
+                                    $current{$type} .= '<td colspan="'.$colsleft.
+                                                       '" class="LC_left_item">'.
+                                                       '&nbsp;</td>';
+                                } elsif ($colsleft == 1) {
+                                    $current{$type} .= '<td class="LC_left_item">&nbsp;</td>'."\n";
+                                }
+                                $current{$type} .= '</tr></table>';
+                            }
+                        }
+                    }
+                    if ($current{$type} eq '') {
+                        $current{$type} = &mt('None specified');
+                    }
+                    if ($othercontrol) {
+                        if ($type eq 'primary') {
+                            $canselect{$type} = $othercontrol;
+                        }
+                    } else {
+                        $canselect{$type} = 
+                            &mt('Add new [_1]'.$type.'[_2]:','<i>','</i>').'&nbsp;'.
+                            '<select name="newspare_'.$type.'_'.$server.'" '.
+                            'id="newspare_'.$type.'_'.$server.'" onchange="checkNewSpares('."'$server','$type'".');">'."\n".
+                            '<option value="" selected ="selected">'.&mt('Select').'</option>'."\n";
+                        if (@choices > 0) {
+                            foreach my $lonhost (@choices) {
+                                $canselect{$type} .= '<option value="'.$lonhost.'">'.$lonhost.'</option>'."\n";
+                            }
+                        }
+                        $canselect{$type} .= '</select>'."\n";
+                    }
+                } else {
+                    $current{$type} = &mt('Could not be determined');
+                    if ($type eq 'primary') {
+                        $canselect{$type} =  $othercontrol;
+                    }
+                }
+                if ($type eq 'default') {
+                    $datatable .= '<tr'.$css_class.'>';
+                }
+                $datatable .= '<td><i>'.$typetitles{$type}.'</i></td>'."\n".
+                              '<td>'.$current{$type}.'</td>'."\n".
+                              '<td>'.$canselect{$type}.'</td></tr>'."\n";
+            }
+            $itemcount ++;
+        }
+    }
+    $$rowtotal += $itemcount;
+    return $datatable;
+}
+
+sub possible_newspares {
+    my ($server,$currspares,$serverhomes,$altids) = @_;
+    my $serverhostname = &Apache::lonnet::hostname($server);
+    my %excluded;
+    if ($serverhostname ne '') {
+        %excluded = (
+                       $serverhostname => 1,
+                    );
+    }
+    if (ref($currspares) eq 'HASH') {
+        foreach my $type (keys(%{$currspares})) {
+            if (ref($currspares->{$type}) eq 'ARRAY') {
+                if (@{$currspares->{$type}} > 0) {
+                    foreach my $curr (@{$currspares->{$type}}) {
+                        my $hostname = &Apache::lonnet::hostname($curr);
+                        $excluded{$hostname} = 1;
+                    }
+                }
+            }
+        }
+    }
+    my @choices;
+    if ((ref($serverhomes) eq 'HASH') && (ref($altids) eq 'HASH')) {
+        if (keys(%{$serverhomes}) > 1) {
+            foreach my $name (sort(keys(%{$serverhomes}))) {
+                unless ($excluded{$name}) {
+                    if (exists($altids->{$serverhomes->{$name}})) {
+                        push(@choices,$altids->{$serverhomes->{$name}});
+                    } else {
+                        push(@choices,$serverhomes->{$name});
+                    }
+                }
+            }
+        }
+    }
+    return sort(@choices);
+}
+
+sub print_loadbalancing {
+    my ($dom,$settings,$rowtotal) = @_;
+    my $primary_id = &Apache::lonnet::domain($dom,'primary');
+    my $intdom = &Apache::lonnet::internet_dom($primary_id);
+    my $numinrow = 1;
+    my $datatable;
+    my %servers = &Apache::lonnet::internet_dom_servers($dom);
+    my (%currbalancer,%currtargets,%currrules,%existing);
+    if (ref($settings) eq 'HASH') {
+        %existing = %{$settings};
+    }
+    if ((keys(%servers) > 1) || (keys(%existing) > 0)) {
+        &get_loadbalancers_config(\%servers,\%existing,\%currbalancer,
+                                  \%currtargets,\%currrules);
+    } else {
+        return;
+    }
+    my ($othertitle,$usertypes,$types) =
+        &Apache::loncommon::sorted_inst_types($dom);
+    my $rownum = 6;
+    if (ref($types) eq 'ARRAY') {
+        $rownum += scalar(@{$types});
+    }
+    my @css_class = ('LC_odd_row','LC_even_row');
+    my $balnum = 0;
+    my $islast;
+    my (@toshow,$disabledtext);
+    if (keys(%currbalancer) > 0) {
+        @toshow = sort(keys(%currbalancer));
+        if (scalar(@toshow) < scalar(keys(%servers)) + 1) {
+            push(@toshow,'');
+        }
+    } else {
+        @toshow = ('');
+        $disabledtext = &mt('No existing load balancer');
+    }
+    foreach my $lonhost (@toshow) {
+        if ($balnum == scalar(@toshow)-1) {
+            $islast = 1;
+        } else {
+            $islast = 0;
+        }
+        my $cssidx = $balnum%2;
+        my $targets_div_style = 'display: none';
+        my $disabled_div_style = 'display: block';
+        my $homedom_div_style = 'display: none';
+        $datatable .= '<tr class="'.$css_class[$cssidx].'">'.
+                      '<td rowspan="'.$rownum.'" valign="top">'.
+                      '<p>';
+        if ($lonhost eq '') {
+            $datatable .= '<span class="LC_nobreak">'; 
+            if (keys(%currbalancer) > 0) {
+                $datatable .= &mt('Add balancer:');
+            } else {
+                $datatable .= &mt('Enable balancer:');
+            }
+            $datatable .= '&nbsp;'.
+                          '<select name="loadbalancing_lonhost_'.$balnum.'"'.
+                          ' id="loadbalancing_lonhost_'.$balnum.'"'.
+                          ' onchange="toggleTargets('."'$balnum'".');">'."\n".
+                          '<option value="" selected="selected">'.&mt('None').
+                          '</option>'."\n";
+            foreach my $server (sort(keys(%servers))) {
+                next if ($currbalancer{$server});
+                $datatable .= '<option value="'.$server.'">'.$server.'</option>'."\n";
+            }
+            $datatable .= 
+                '</select>'."\n".
+                '<input type="hidden" name="loadbalancing_prevlonhost_'.$balnum.'" id="loadbalancing_prevlonhost_'.$balnum.'" value="" />&nbsp;</span>'."\n";
+        } else {
+            $datatable .= '<i>'.$lonhost.'</i><br /><span class="LC_nobreak">'.
+                          '<label><input type="checkbox" name="loadbalancing_delete" value="'.$balnum.'" id="loadbalancing_delete_'.$balnum.'" onclick="javascript:balancerDeleteChange('."'$balnum'".');" />&nbsp;'.
+                           &mt('Stop balancing').'</label>'.
+                           '<input type="hidden" name="loadbalancing_lonhost_'.$balnum.'" value="'.$lonhost.'" id="loadbalancing_lonhost_'.$balnum.'" /></span>';
+            $targets_div_style = 'display: block';
+            $disabled_div_style = 'display: none';
+            if ($dom eq &Apache::lonnet::host_domain($lonhost)) {
+                $homedom_div_style = 'display: block';
+            }
+        }
+        $datatable .= '</p></td><td rowspan="'.$rownum.'" valign="top">'.
+                  '<div id="loadbalancing_disabled_'.$balnum.'" style="'.
+                  $disabled_div_style.'">'.$disabledtext.'</div>'."\n".
+                  '<div id="loadbalancing_targets_'.$balnum.'" style="'.$targets_div_style.'">'.&mt('Offloads to:').'<br />';
+        my ($numspares,@spares) = &count_servers($lonhost,%servers);
+        my @sparestypes = ('primary','default');
+        my %typetitles = &sparestype_titles();
+        foreach my $sparetype (@sparestypes) {
+            my $targettable;
+            for (my $i=0; $i<$numspares; $i++) {
+                my $checked;
+                if (ref($currtargets{$lonhost}) eq 'HASH') {
+                    if (ref($currtargets{$lonhost}{$sparetype}) eq 'ARRAY') {
+                        if (grep(/^\Q$spares[$i]\E$/,@{$currtargets{$lonhost}{$sparetype}})) {
+                            $checked = ' checked="checked"';
+                        }
+                    }
+                }
+                my ($chkboxval,$disabled);
+                if (($lonhost ne '') && (exists($servers{$lonhost}))) {
+                    $chkboxval = $spares[$i];
+                }
+                if (exists($currbalancer{$spares[$i]})) {
+                    $disabled = ' disabled="disabled"';
+                }
+                $targettable .= 
+                    '<td><label><input type="checkbox" name="loadbalancing_target_'.$balnum.'_'.$sparetype.'"'.
+                    $checked.$disabled.' value="'.$chkboxval.'" id="loadbalancing_target_'.$balnum.'_'.$sparetype.'_'.$i.'" onclick="checkOffloads('."this,'$balnum','$sparetype'".');" /><span id="loadbalancing_targettxt_'.$balnum.'_'.$sparetype.'_'.$i.'">&nbsp;'.$chkboxval.
+                    '</span></label></td>';
+                my $rem = $i%($numinrow);
+                if ($rem == 0) {
+                    if (($i > 0) && ($i < $numspares-1)) {
+                        $targettable .= '</tr>';
+                    }
+                    if ($i < $numspares-1) {
+                        $targettable .= '<tr>';
+                    }
+                }
+            }
+            if ($targettable ne '') {
+                my $rem = $numspares%($numinrow);
+                my $colsleft = $numinrow - $rem;
+                if ($colsleft > 1 ) {
+                    $targettable .= '<td colspan="'.$colsleft.'" class="LC_left_item">'.
+                                    '&nbsp;</td>';
+                } elsif ($colsleft == 1) {
+                    $targettable .= '<td class="LC_left_item">&nbsp;</td>';
+                }
+                $datatable .=  '<i>'.$typetitles{$sparetype}.'</i><br />'.
+                               '<table><tr>'.$targettable.'</tr></table><br />';
+            }
+        }
+        $datatable .= '</div></td></tr>'.
+                      &loadbalancing_rules($dom,$intdom,$currrules{$lonhost},
+                                           $othertitle,$usertypes,$types,\%servers,
+                                           \%currbalancer,$lonhost,
+                                           $targets_div_style,$homedom_div_style,
+                                           $css_class[$cssidx],$balnum,$islast);
+        $$rowtotal += $rownum;
+        $balnum ++;
+    }
+    $datatable .= '<input type="hidden" name="loadbalancing_total" id="loadbalancing_total" value="'.$balnum.'" />';
+    return $datatable;
+}
+
+sub get_loadbalancers_config {
+    my ($servers,$existing,$currbalancer,$currtargets,$currrules) = @_;
+    return unless ((ref($servers) eq 'HASH') &&
+                   (ref($existing) eq 'HASH') && (ref($currbalancer) eq 'HASH') &&
+                   (ref($currtargets) eq 'HASH') && (ref($currrules) eq 'HASH'));
+    if (keys(%{$existing}) > 0) {
+        my $oldlonhost;
+        foreach my $key (sort(keys(%{$existing}))) {
+            if ($key eq 'lonhost') {
+                $oldlonhost = $existing->{'lonhost'};
+                $currbalancer->{$oldlonhost} = 1;
+            } elsif ($key eq 'targets') {
+                if ($oldlonhost) {
+                    $currtargets->{$oldlonhost} = $existing->{'targets'};
+                }
+            } elsif ($key eq 'rules') {
+                if ($oldlonhost) {
+                    $currrules->{$oldlonhost} = $existing->{'rules'};
+                }
+            } elsif (ref($existing->{$key}) eq 'HASH') {
+                $currbalancer->{$key} = 1;
+                $currtargets->{$key} = $existing->{$key}{'targets'};
+                $currrules->{$key} = $existing->{$key}{'rules'};
+            }
+        }
+    } else {
+        my ($balancerref,$targetsref) =
+                &Apache::lonnet::get_lonbalancer_config($servers);
+        if ((ref($balancerref) eq 'HASH') && (ref($targetsref) eq 'HASH')) {
+            foreach my $server (sort(keys(%{$balancerref}))) {
+                $currbalancer->{$server} = 1;
+                $currtargets->{$server} = $targetsref->{$server};
+            }
+        }
+    }
+    return;
+}
+
+sub loadbalancing_rules {
+    my ($dom,$intdom,$currrules,$othertitle,$usertypes,$types,$servers,
+        $currbalancer,$lonhost,$targets_div_style,$homedom_div_style,
+        $css_class,$balnum,$islast) = @_;
+    my $output;
+    my $num = 0;
+    my ($alltypes,$othertypes,$titles) = 
+        &loadbalancing_titles($dom,$intdom,$usertypes,$types);
+    if ((ref($alltypes) eq 'ARRAY') && (ref($titles) eq 'HASH'))  {
+        foreach my $type (@{$alltypes}) {
+            $num ++;
+            my $current;
+            if (ref($currrules) eq 'HASH') {
+                $current = $currrules->{$type};
+            }
+            if (($type eq '_LC_external') || ($type eq '_LC_internetdom')) {
+                if ($dom ne &Apache::lonnet::host_domain($lonhost)) {
+                    $current = '';
+                }
+            }
+            $output .= &loadbalance_rule_row($type,$titles->{$type},$current,
+                                             $servers,$currbalancer,$lonhost,$dom,
+                                             $targets_div_style,$homedom_div_style,
+                                             $css_class,$balnum,$num,$islast);
+        }
+    }
+    return $output;
+}
+
+sub loadbalancing_titles {
+    my ($dom,$intdom,$usertypes,$types) = @_;
+    my %othertypes = (
+           '_LC_adv'         => &mt('Advanced users from [_1]',$dom),
+           '_LC_author'      => &mt('Users from [_1] with author role',$dom),
+           '_LC_internetdom' => &mt('Users not from [_1], but from [_2]',$dom,$intdom),
+           '_LC_external'    => &mt('Users not from [_1]',$intdom),
+                     );
+    my @alltypes = ('_LC_adv','_LC_author','_LC_internetdom','_LC_external');
+    if (ref($types) eq 'ARRAY') {
+        unshift(@alltypes,@{$types},'default');
+    }
+    my %titles;
+    foreach my $type (@alltypes) {
+        if ($type =~ /^_LC_/) {
+            $titles{$type} = $othertypes{$type};
+        } elsif ($type eq 'default') {
+            $titles{$type} = &mt('All users from [_1]',$dom);
+            if (ref($types) eq 'ARRAY') {
+                if (@{$types} > 0) {
+                    $titles{$type} = &mt('Other users from [_1]',$dom);
+                }
+            }
+        } elsif (ref($usertypes) eq 'HASH') {
+            $titles{$type} = $usertypes->{$type};
+        }
+    }
+    return (\@alltypes,\%othertypes,\%titles);
+}
+
+sub loadbalance_rule_row {
+    my ($type,$title,$current,$servers,$currbalancer,$lonhost,$dom,
+        $targets_div_style,$homedom_div_style,$css_class,$balnum,$num,$islast) = @_;
+    my @rulenames = ('default','homeserver');
+    my %ruletitles = &offloadtype_text();
+    if ($type eq '_LC_external') {
+        push(@rulenames,'externalbalancer');
+    } else {
+        push(@rulenames,'specific');
+    }
+    push(@rulenames,'none');
+    my $style = $targets_div_style;
+    if (($type eq '_LC_external') || ($type eq '_LC_internetdom')) {
+        $style = $homedom_div_style;
+    }
+    my $space;
+    if ($islast && $num == 1) {
+        $space = '<div display="inline-block">&nbsp;</div>';
+    }
+    my $output = 
+        '<tr class="'.$css_class.'" id="balanceruletr_'.$balnum.'_'.$num.'"><td valign="top">'.$space.
+        '<div id="balanceruletitle_'.$balnum.'_'.$type.'" style="'.$style.'">'.$title.'</div></td>'."\n".
+        '<td valaign="top">'.$space.
+        '<div id="balancerule_'.$balnum.'_'.$type.'" style="'.$style.'">'."\n";
+    for (my $i=0; $i<@rulenames; $i++) {
+        my $rule = $rulenames[$i];
+        my ($checked,$extra);
+        if ($rulenames[$i] eq 'default') {
+            $rule = '';
+        }
+        if ($rulenames[$i] eq 'specific') {
+            if (ref($servers) eq 'HASH') {
+                my $default;
+                if (($current ne '') && (exists($servers->{$current}))) {
+                    $checked = ' checked="checked"';
+                }
+                unless ($checked) {
+                    $default = ' selected="selected"';
+                }
+                $extra = 
+                    ':&nbsp;<select name="loadbalancing_singleserver_'.$balnum.'_'.$type.
+                    '" id="loadbalancing_singleserver_'.$balnum.'_'.$type.
+                    '" onchange="singleServerToggle('."'$balnum','$type'".')">'."\n".
+                    '<option value=""'.$default.'></option>'."\n";
+                foreach my $server (sort(keys(%{$servers}))) {
+                    if (ref($currbalancer) eq 'HASH') {
+                        next if (exists($currbalancer->{$server}));
+                    }
+                    my $selected;
+                    if ($server eq $current) {
+                        $selected = ' selected="selected"';
+                    }
+                    $extra .= '<option value="'.$server.'"'.$selected.'>'.$server.'</option>';
+                }
+                $extra .= '</select>';
+            }
+        } elsif ($rule eq $current) {
+            $checked = ' checked="checked"';
+        }
+        $output .= '<span class="LC_nobreak"><label>'.
+                   '<input type="radio" name="loadbalancing_rules_'.$balnum.'_'.$type.
+                   '" id="loadbalancing_rules_'.$balnum.'_'.$type.'_'.$i.'" value="'.
+                   $rule.'" onclick="balanceruleChange('."this.form,'$balnum','$type'".
+                   ')"'.$checked.' />&nbsp;'.$ruletitles{$rulenames[$i]}.
+                   '</label>'.$extra.'</span><br />'."\n";
+    }
+    $output .= '</div></td></tr>'."\n";
+    return $output;
+}
+
+sub offloadtype_text {
+    my %ruletitles = &Apache::lonlocal::texthash (
+           'default'          => 'Offloads to default destinations',
+           'homeserver'       => "Offloads to user's home server",
+           'externalbalancer' => "Offloads to Load Balancer in user's domain",
+           'specific'         => 'Offloads to specific server',
+           'none'             => 'No offload',
+    );
+    return %ruletitles;
+}
+
+sub sparestype_titles {
+    my %typestitles = &Apache::lonlocal::texthash (
+                          'primary' => 'primary',
+                          'default' => 'default',
+                      );
+    return %typestitles;
+}
+
 sub contact_titles {
     my %titles = &Apache::lonlocal::texthash (
                    'supportemail' => 'Support E-mail address',
@@ -2463,6 +3241,7 @@ sub contact_titles {
                    'helpdeskmail' => 'Helpdesk requests to be e-mailed to',
                    'lonstatusmail' => 'E-mail from nightly status check (warnings/errors)',
                    'requestsmail' => 'E-mail from course requests requiring approval',
+                   'updatesmail'  => 'E-mail from nightly check of LON-CAPA module integrity/updates',
                  );
     my %short_titles = &Apache::lonlocal::texthash (
                            adminemail   => 'Admin E-mail address',
@@ -2473,8 +3252,9 @@ sub contact_titles {
 
 sub tool_titles {
     my %titles = &Apache::lonlocal::texthash (
-                     aboutme    => 'Personal Information Page',
+                     aboutme    => 'Personal web page',
                      blog       => 'Blog',
+                     webdav     => 'WebDAV',
                      portfolio  => 'Portfolio',
                      official   => 'Official courses (with institutional codes)',
                      unofficial => 'Unofficial courses',
@@ -2497,10 +3277,19 @@ sub courserequest_titles {
     return %titles;
 }
 
+sub authorrequest_titles {
+    my %titles = &Apache::lonlocal::texthash (
+                                   norequest  => 'Not allowed',
+                                   approval   => 'Approval by Dom. Coord.',
+                                   automatic  => 'Automatic approval',
+                 );
+    return %titles;
+} 
+
 sub courserequest_conditions {
     my %conditions = &Apache::lonlocal::texthash (
        approval    => '(Processing of request subject to approval by Domain Coordinator).',
-       validate   => '(Processing of request subject to instittutional validation).',
+       validate   => '(Processing of request subject to institutional validation).',
                  );
     return %conditions;
 }
@@ -2626,18 +3415,20 @@ sub print_usercreation {
         }
         my ($othertitle,$usertypes,$types) =
             &Apache::loncommon::sorted_inst_types($dom);
+        my $createsettings;
+        if (ref($settings) eq 'HASH') {
+            $createsettings = $settings->{cancreate};
+        }
         if (ref($usertypes) eq 'HASH') {
             if (keys(%{$usertypes}) > 0) {
-                my $createsettings;
-                if (ref($settings) eq 'HASH') {
-                    $createsettings = $settings->{cancreate};
-                }
                 $datatable .= &insttypes_row($createsettings,$types,$usertypes,
                                              $dom,$numinrow,$othertitle,
                                              'statustocreate');
                 $$rowtotal ++;
+                $rownum ++;
             }
         }
+        $datatable .= &captcha_choice('cancreate',$createsettings,$rownum);
     } else {
         my @contexts = ('author','course','domain');
         my @authtypes = ('int','krb4','krb5','loc');
@@ -2689,6 +3480,64 @@ sub print_usercreation {
     return $datatable;
 }
 
+sub captcha_choice {
+    my ($context,$settings,$itemcount) = @_;
+    my ($keyentry,$currpub,$currpriv,%checked,$rowname,$pubtext,$privtext);
+    my %lt = &captcha_phrases();
+    $keyentry = 'hidden';
+    if ($context eq 'cancreate') {
+        $rowname = &mt('CAPTCHA validation (e-mail as username)');
+    } elsif ($context eq 'login') {
+        $rowname =  &mt('"Contact helpdesk" CAPTCHA validation');
+    }
+    if (ref($settings) eq 'HASH') {
+        if ($settings->{'captcha'}) {
+            $checked{$settings->{'captcha'}} = ' checked="checked"';
+        } else {
+            $checked{'original'} = ' checked="checked"';
+        }
+        if ($settings->{'captcha'} eq 'recaptcha') {
+            $pubtext = $lt{'pub'};
+            $privtext = $lt{'priv'};
+            $keyentry = 'text';
+        }
+        if (ref($settings->{'recaptchakeys'}) eq 'HASH') {
+            $currpub = $settings->{'recaptchakeys'}{'public'};
+            $currpriv = $settings->{'recaptchakeys'}{'private'};
+        }
+    } else {
+        $checked{'original'} = ' checked="checked"';
+    }
+    my $css_class = $itemcount%2?' class="LC_odd_row"':'';
+    my $output = '<tr'.$css_class.'>'.
+                 '<td class="LC_left_item">'.$rowname.'</td><td class="LC_left_item" colspan="2">'."\n".
+                 '<table><tr><td>'."\n";
+    foreach my $option ('original','recaptcha','notused') {
+        $output .= '<span class="LC_nobreak"><label><input type="radio" name="'.$context.'_captcha" value="'.
+                   $option.'" '.$checked{$option}.' onchange="javascript:updateCaptcha('."this,'$context'".');" />'.
+                   $lt{$option}.'</label></span>';
+        unless ($option eq 'notused') {
+            $output .= ('&nbsp;'x2)."\n";
+        }
+    }
+#
+# Note: If reCAPTCHA is to be used for LON-CAPA servers in a domain, a domain coordinator should visit:
+# https://www.google.com/recaptcha and generate a Public and Private key. For domains with multiple
+# servers a single key pair will be used for all servers, so the internet domain (e.g., yourcollege.edu) 
+# specified for use with the key should be broad enough to accommodate all servers in the LON-CAPA domain.
+#  
+    $output .= '</td></tr>'."\n".
+               '<tr><td>'."\n".
+               '<span class="LC_nobreak"><span id="'.$context.'_recaptchapubtxt">'.$pubtext.'</span>&nbsp;'."\n".
+               '<input type="'.$keyentry.'" id="'.$context.'_recaptchapub" name="'.$context.'_recaptchapub" value="'.
+               $currpub.'" size="40" /></span><br />'."\n".
+               '<span class="LC_nobreak"><span id="'.$context.'_recaptchaprivtxt">'.$privtext.'</span>&nbsp;'."\n".
+               '<input type="'.$keyentry.'" id="'.$context.'_recaptchapriv" name="'.$context.'_recaptchapriv" value="'.
+               $currpriv.'" size="40" /></span></td></tr></table>'."\n".
+               '</td></tr>';
+    return $output;
+}
+
 sub user_formats_row {
     my ($type,$settings,$rules,$ruleorder,$numinrow,$rowcount) = @_;
     my $output;
@@ -2863,6 +3712,12 @@ sub print_defaults {
         } elsif ($item eq 'datelocale_def') {
             my $includeempty = 1;
             $datatable .= &Apache::loncommon::select_datelocale($item,$domdefaults{$item},undef,$includeempty);
+        } elsif ($item eq 'lang_def') {
+            my %langchoices = &get_languages_hash();
+            $langchoices{''} = 'No language preference';
+            %langchoices = &Apache::lonlocal::texthash(%langchoices);
+            $datatable .= &Apache::loncommon::select_form($domdefaults{$item},$item,
+                                                          \%langchoices);
         } else {
             my $size;
             if ($item eq 'portal_def') {
@@ -2878,6 +3733,17 @@ sub print_defaults {
     return $datatable;
 }
 
+sub get_languages_hash {
+    my %langchoices;
+    foreach my $id (&Apache::loncommon::languageids()) {
+        my $code = &Apache::loncommon::supportedlanguagecode($id);
+        if ($code ne '') {
+            $langchoices{$code} =  &Apache::loncommon::plainlanguagedescription($id);
+        }
+    }
+    return %langchoices;
+}
+
 sub defaults_titles {
     my ($dom) = @_;
     my %titles = &Apache::lonlocal::texthash (
@@ -3338,8 +4204,8 @@ sub print_serverstatuses {
 
 sub serverstatus_pages {
     return ('userstatus','lonstatus','loncron','server-status','codeversions',
-            'clusterstatus','metadata_keywords','metadata_harvest',
-            'takeoffline','takeonline','showenv','toggledebug');
+            'checksums','clusterstatus','metadata_keywords','metadata_harvest',
+            'takeoffline','takeonline','showenv','toggledebug','ping','domconf');
 }
 
 sub coursecategories_javascript {
@@ -3653,9 +4519,13 @@ sub insttypes_row {
     if ($context eq 'cansearch') {
         $showdom = ' ('.$dom.')';
     }
+    my $class = 'LC_left_item';
+    if ($context eq 'statustocreate') {
+        $class = 'LC_right_item';
+    }
     my $output =  '<tr class="LC_odd_row">'.
                   '<td>'.$lt{$context}.$showdom.
-                  '</td><td class="LC_left_item" colspan="2"><table>';
+                  '</td><td class="'.$class.'" colspan="2"><table>';
     my $rem;
     if (ref($types) eq 'ARRAY') {
         for (my $i=0; $i<@{$types}; $i++) {
@@ -3785,13 +4655,14 @@ sub usertype_update_row {
 
 sub modify_login {
     my ($r,$dom,$confname,%domconfig) = @_;
-    my ($resulttext,$errors,$colchgtext,%changes,%colchanges);
-    my %title = ( coursecatalog => 'Display course catalog',
-                  adminmail => 'Display administrator E-mail address',
-                  newuser => 'Link for visitors to create a user account',
-                  loginheader => 'Log-in box header');
-    my @offon = ('off','on');
-    my %curr_loginvia;
+    my ($resulttext,$errors,$colchgtext,%changes,%colchanges,%newfile,%newurl,
+        %curr_loginvia,%loginhash,@currlangs,@newlangs,$addedfile,%title,@offon);
+    %title = ( coursecatalog => 'Display course catalog',
+               adminmail => 'Display administrator E-mail address',
+               helpdesk  => 'Display "Contact Helpdesk" link',
+               newuser => 'Link for visitors to create a user account',
+               loginheader => 'Log-in box header');
+    @offon = ('off','on');
     if (ref($domconfig{login}) eq 'HASH') {
         if (ref($domconfig{login}{loginvia}) eq 'HASH') {
             foreach my $lonhost (keys(%{$domconfig{login}{loginvia}})) {
@@ -3799,10 +4670,9 @@ sub modify_login {
             }
         }
     }
-    my %loginhash;
     ($errors,%colchanges) = &modify_colors($r,$dom,$confname,['login'],
                                            \%domconfig,\%loginhash);
-    my @toggles = ('coursecatalog','adminmail','newuser');
+    my @toggles = ('coursecatalog','adminmail','helpdesk','newuser');
     foreach my $item (@toggles) {
         $loginhash{login}{$item} = $env{'form.'.$item};
     }
@@ -3812,7 +4682,7 @@ sub modify_login {
                                          \%loginhash);
     }
 
-    my %servers = &dom_servers($dom);
+    my %servers = &Apache::lonnet::internet_dom_servers($dom);
     my @loginvia_attribs = ('serverpath','custompath','exempt');
     if (keys(%servers) > 1) {
         foreach my $lonhost (keys(%servers)) {
@@ -3872,7 +4742,6 @@ sub modify_login {
                                 $new = ''; 
                             }
                         }
-
                         $loginhash{login}{loginvia}{$lonhost}{$item} = $new;
                     }
                 }
@@ -3898,12 +4767,103 @@ sub modify_login {
         }
     }
 
+    my $servadm = $r->dir_config('lonAdmEMail');
+    my %langchoices = &Apache::lonlocal::texthash(&get_languages_hash());
+    if (ref($domconfig{'login'}) eq 'HASH') {
+        if (ref($domconfig{'login'}{'helpurl'}) eq 'HASH') {
+            foreach my $lang (sort(keys(%{$domconfig{'login'}{'helpurl'}}))) {
+                if ($lang eq 'nolang') {
+                    push(@currlangs,$lang);
+                } elsif (defined($langchoices{$lang})) {
+                    push(@currlangs,$lang);
+                } else {
+                    next;
+                }
+            }
+        }
+    }
+    my @delurls = &Apache::loncommon::get_env_multiple('form.loginhelpurl_del');
+    if (@currlangs > 0) {
+        foreach my $lang (@currlangs) {
+            if (grep(/^\Q$lang\E$/,@delurls)) {
+                $changes{'helpurl'}{$lang} = 1;
+            } elsif ($env{'form.loginhelpurl_'.$lang.'.filename'}) {
+                $changes{'helpurl'}{$lang} = 1;
+                $newfile{$lang} = $env{'form.loginhelpurl_'.$lang.'.filename'};
+                push(@newlangs,$lang);
+            } else {
+                $loginhash{'login'}{'helpurl'}{$lang} = $domconfig{'login'}{'helpurl'}{$lang};
+            }
+        }
+    }
+    unless (grep(/^nolang$/,@currlangs)) {
+        if ($env{'form.loginhelpurl_nolang.filename'}) {
+            $changes{'helpurl'}{'nolang'} = 1;
+            $newfile{'nolang'} = $env{'form.loginhelpurl_nolang.filename'};
+            push(@newlangs,'nolang');
+        }
+    }
+    if ($env{'form.loginhelpurl_add_lang'}) {
+        if ((defined($langchoices{$env{'form.loginhelpurl_add_lang'}})) &&
+            ($env{'form.loginhelpurl_add_file.filename'})) {
+            $newfile{$env{'form.loginhelpurl_add_lang'}} = $env{'form.loginhelpurl_add_file.filename'};
+            $addedfile = $env{'form.loginhelpurl_add_lang'};
+        }
+    }
+    if ((@newlangs > 0) || ($addedfile)) {
+        my $error;
+        my ($configuserok,$author_ok,$switchserver) = &config_check($dom,$confname,$servadm);
+        if ($configuserok eq 'ok') {
+            if ($switchserver) {
+                $error = &mt("Upload of custom help file is not permitted to this server: [_1]",$switchserver);
+            } elsif ($author_ok eq 'ok') {
+                my @allnew = @newlangs;
+                if ($addedfile ne '') {
+                    push(@allnew,$addedfile);
+                }
+                foreach my $lang (@allnew) {
+                    my $formelem = 'loginhelpurl_'.$lang;
+                    if ($lang eq $env{'form.loginhelpurl_add_lang'}) {
+                        $formelem = 'loginhelpurl_add_file';
+                    }
+                    (my $result,$newurl{$lang}) = &publishlogo($r,'upload',$formelem,$dom,$confname,
+                                                               "help/$lang",'','',$newfile{$lang});
+                    if ($result eq 'ok') {
+                        $loginhash{'login'}{'helpurl'}{$lang} = $newurl{$lang};
+                        $changes{'helpurl'}{$lang} = 1;
+                    } else {
+                        my $puberror = &mt("Upload of [_1] failed because an error occurred publishing the file in RES space. Error was: [_2].",$newfile{$lang},$result);
+                        $errors .= '<li><span class="LC_error">'.$puberror.'</span></li>';
+                        if ((grep(/^\Q$lang\E$/,@currlangs)) && 
+                            (!grep(/^\Q$lang\E$/,@delurls))) {
+
+                            $loginhash{'login'}{'helpurl'}{$lang} = $domconfig{'login'}{'helpurl'}{$lang};
+                        }
+                    }
+                }
+            } else {
+                $error = &mt("Upload of custom log-in help file(s) failed because an author role could not be assigned to a Domain Configuration user ([_1]) in domain: [_2].  Error was: [_3].",$confname,$dom,$author_ok);
+            }
+        } else {
+            $error = &mt("Upload of custom log-in help file(s) failed because a Domain Configuration user ([_1]) could not be created in domain: [_2].  Error was: [_3].",$confname,$dom,$configuserok);
+        }
+        if ($error) {
+            &Apache::lonnet::logthis($error);
+            $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
+        }
+    }
+    &process_captcha('login',\%changes,$loginhash{'login'},$domconfig{'login'});
+
+    my $defaulthelpfile = '/adm/loginproblems.html';
+    my $defaulttext = &mt('Default in use');
+
     my $putresult = &Apache::lonnet::put_dom('configuration',\%loginhash,
                                              $dom);
     if ($putresult eq 'ok') {
-        my @toggles = ('coursecatalog','adminmail','newuser');
+        my @toggles = ('coursecatalog','adminmail','helpdesk','newuser');
         my %defaultchecked = (
                     'coursecatalog' => 'on',
+                    'helpdesk'      => 'on',
                     'adminmail'     => 'off',
                     'newuser'       => 'off',
         );
@@ -3963,6 +4923,68 @@ sub modify_login {
                         }
                         $resulttext .= '</ul></li>';
                     }
+                } elsif ($item eq 'helpurl') {
+                    if (ref($changes{$item}) eq 'HASH') {
+                        foreach my $lang (sort(keys(%{$changes{$item}}))) {
+                            if (grep(/^\Q$lang\E$/,@delurls)) {
+                                my ($chg,$link);
+                                $link = &Apache::loncommon::modal_link($defaulthelpfile,$defaulttext,600,500);
+                                if ($lang eq 'nolang') {
+                                    $chg = &mt('custom log-in help file removed for no preferred language; [_1]',$link);
+                                } else {
+                                    $chg = &mt('custom log-in help file removed for specific language: [_1]; [_2]',$langchoices{$lang},$link);
+                                }
+                                $resulttext .= '<li>'.$chg.'</li>';
+                            } else {
+                                my $chg;
+                                if ($lang eq 'nolang') {
+                                    $chg = &mt('custom log-in help file for no preferred language');
+                                } else {
+                                    $chg = &mt('custom log-in help file for specific language: [_1]',$langchoices{$lang});
+                                }
+                                $resulttext .= '<li>'.&Apache::loncommon::modal_link(
+                                                      $loginhash{'login'}{'helpurl'}{$lang}.
+                                                      '?inhibitmenu=yes',$chg,600,500).
+                                               '</li>';
+                            }
+                        }
+                    }
+                } elsif ($item eq 'captcha') {
+                    if (ref($loginhash{'login'}) eq 'HASH') {
+                        my $chgtxt; 
+                        if ($loginhash{'login'}{$item} eq 'notused') {
+                            $chgtxt .= &mt('No CAPTCHA validation in use for helpdesk form.');
+                        } else {
+                            my %captchas = &captcha_phrases();
+                            if ($captchas{$loginhash{'login'}{$item}}) {
+                                $chgtxt .= &mt("Validation for helpdesk form set to $captchas{$loginhash{'login'}{$item}}.");
+                            } else {
+                                $chgtxt .= &mt('Validation for helpdesk form set to unknown type.');
+                            }
+                        }
+                        $resulttext .= '<li>'.$chgtxt.'</li>';
+                    }
+                } elsif ($item eq 'recaptchakeys') {
+                    if (ref($loginhash{'login'}) eq 'HASH') {
+                        my ($privkey,$pubkey);
+                        if (ref($loginhash{'login'}{$item}) eq 'HASH') {
+                            $pubkey = $loginhash{'login'}{$item}{'public'};
+                            $privkey = $loginhash{'login'}{$item}{'private'};
+                        }
+                        my $chgtxt .= &mt('ReCAPTCHA keys changes').'<ul>';
+                        if (!$pubkey) {
+                            $chgtxt .= '<li>'.&mt('Public key deleted').'</li>';
+                        } else {
+                            $chgtxt .= '<li>'.&mt('Public key set to [_1]',$pubkey).'</li>';
+                        }
+                        if (!$privkey) {
+                            $chgtxt .= '<li>'.&mt('Private key deleted').'</li>';
+                        } else {
+                            $chgtxt .= '<li>'.&mt('Private key set to [_1]',$pubkey).'</li>';
+                        }
+                        $chgtxt .= '</ul>';
+                        $resulttext .= '<li>'.$chgtxt.'</li>';
+                    }
                 } else {
                     $resulttext .= '<li>'.&mt("$title{$item} set to $offon[$env{'form.'.$item}]").'</li>';
                 }
@@ -4407,15 +5429,17 @@ sub publishlogo {
 # See if there is anything left
     unless ($fname) { return ('error: no uploaded file'); }
     $fname="$subdir/$fname";
-    my $filepath='/home/'.$confname.'/public_html';
+    my $docroot=$r->dir_config('lonDocRoot'); 
+    my $filepath="$docroot/priv";
+    my $relpath = "$dom/$confname";
     my ($fnamepath,$file,$fetchthumb);
     $file=$fname;
     if ($fname=~m|/|) {
         ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
     }
-    my @parts=split(/\//,$filepath.'/'.$fnamepath);
+    my @parts=split(/\//,"$filepath/$relpath/$fnamepath");
     my $count;
-    for ($count=4;$count<=$#parts;$count++) {
+    for ($count=5;$count<=$#parts;$count++) {
         $filepath.="/$parts[$count]";
         if ((-e $filepath)!=1) {
             mkdir($filepath,02770);
@@ -4462,7 +5486,6 @@ $env{'user.name'}.':'.$env{'user.domain'
         close(FH);
         chmod(0660, $source); # Permissions to rw-rw---.
 
-        my $docroot=$r->dir_config('lonDocRoot');
         my $targetdir=$docroot.'/res/'.$dom.'/'.$confname .'/'.$fnamepath;
         my $copyfile=$targetdir.'/'.$file;
 
@@ -4485,8 +5508,15 @@ $env{'user.name'}.':'.$env{'user.domain'
             if (copy($source,$copyfile)) {
                 print $logfile "\nCopied original source to ".$copyfile."\n";
                 $output = 'ok';
-                &write_metadata($dom,$confname,$formname,$targetdir,$file,$logfile);
                 $logourl = '/res/'.$dom.'/'.$confname.'/'.$fname;
+                push(@{$modified_urls},[$copyfile,$source]);
+                my $metaoutput = 
+                    &write_metadata($dom,$confname,$formname,$targetdir,$file,$logfile);
+                unless ($registered_cleanup) {
+                    my $handlers = $r->get_handlers('PerlCleanupHandler');
+                    $r->set_handlers('PerlCleanupHandler' => [\&notifysubscribed,@{$handlers}]);
+                    $registered_cleanup=1;
+                }
             } else {
                 print $logfile "\nUnable to write ".$copyfile.':'.$!."\n";
                 $output = &mt('Failed to copy file to RES space').", $!";
@@ -4504,8 +5534,15 @@ $env{'user.name'}.':'.$env{'user.domain'
                             my $copyfile=$targetdir.'/tn-'.$file;
                             if (copy($outfile,$copyfile)) {
                                 print $logfile "\nCopied source to ".$copyfile."\n";
-                                &write_metadata($dom,$confname,$formname,
-                                                $targetdir,'tn-'.$file,$logfile);
+                                my $thumb_metaoutput = 
+                                    &write_metadata($dom,$confname,$formname,
+                                                    $targetdir,'tn-'.$file,$logfile);
+                                push(@{$modified_urls},[$copyfile,$outfile]);
+                                unless ($registered_cleanup) {
+                                    my $handlers = $r->get_handlers('PerlCleanupHandler');
+                                    $r->set_handlers('PerlCleanupHandler' => [\&notifysubscribed,@{$handlers}]);
+                                    $registered_cleanup=1;
+                                }
                             } else {
                                 print $logfile "\nUnable to write ".$copyfile.
                                                ':'.$!."\n";
@@ -4570,30 +5607,79 @@ sub write_metadata {
     {
         print $logfile "\nWrite metadata file for ".$targetdir.'/'.$file;
         my $mfh;
-        unless (open($mfh,'>'.$targetdir.'/'.$file.'.meta')) {
+        if (open($mfh,'>'.$targetdir.'/'.$file.'.meta')) {
+            foreach (sort(keys(%metadatafields))) {
+                unless ($_=~/\./) {
+                    my $unikey=$_;
+                    $unikey=~/^([A-Za-z]+)/;
+                    my $tag=$1;
+                    $tag=~tr/A-Z/a-z/;
+                    print $mfh "\n\<$tag";
+                    foreach (split(/\,/,$metadatakeys{$unikey})) {
+                        my $value=$metadatafields{$unikey.'.'.$_};
+                        $value=~s/\"/\'\'/g;
+                        print $mfh ' '.$_.'="'.$value.'"';
+                    }
+                    print $mfh '>'.
+                        &HTML::Entities::encode($metadatafields{$unikey},'<>&"')
+                            .'</'.$tag.'>';
+                }
+            }
+            $output = 'ok';
+            print $logfile "\nWrote metadata";
+            close($mfh);
+        } else {
+            print $logfile "\nFailed to open metadata file";
             $output = &mt('Could not write metadata');
         }
-        foreach (sort keys %metadatafields) {
-            unless ($_=~/\./) {
-                my $unikey=$_;
-                $unikey=~/^([A-Za-z]+)/;
-                my $tag=$1;
-                $tag=~tr/A-Z/a-z/;
-                print $mfh "\n\<$tag";
-                foreach (split(/\,/,$metadatakeys{$unikey})) {
-                    my $value=$metadatafields{$unikey.'.'.$_};
-                    $value=~s/\"/\'\'/g;
-                    print $mfh ' '.$_.'="'.$value.'"';
-                }
-                print $mfh '>'.
-                    &HTML::Entities::encode($metadatafields{$unikey},'<>&"')
-                        .'</'.$tag.'>';
-            }
-        }
-        $output = 'ok';
-        print $logfile "\nWrote metadata";
-        close($mfh);
     }
+    return $output;
+}
+
+sub notifysubscribed {
+    foreach my $targetsource (@{$modified_urls}){
+        next unless (ref($targetsource) eq 'ARRAY');
+        my ($target,$source)=@{$targetsource};
+        if ($source ne '') {
+            if (open(my $logfh,'>>'.$source.'.log')) {
+                print $logfh "\nCleanup phase: Notifications\n";
+                my @subscribed=&subscribed_hosts($target);
+                foreach my $subhost (@subscribed) {
+                    print $logfh "\nNotifying host ".$subhost.':';
+                    my $reply=&Apache::lonnet::critical('update:'.$target,$subhost);
+                    print $logfh $reply;
+                }
+                my @subscribedmeta=&subscribed_hosts("$target.meta");
+                foreach my $subhost (@subscribedmeta) {
+                    print $logfh "\nNotifying host for metadata only ".$subhost.':';
+                    my $reply=&Apache::lonnet::critical('update:'.$target.'.meta',
+                                                        $subhost);
+                    print $logfh $reply;
+                }
+                print $logfh "\n============ Done ============\n";
+                close($logfh);
+            }
+        }
+    }
+    return OK;
+}
+
+sub subscribed_hosts {
+    my ($target) = @_;
+    my @subscribed;
+    if (open(my $fh,"<$target.subscription")) {
+        while (my $subline=<$fh>) {
+            if ($subline =~ /^($match_lonid):/) {
+                my $host = $1;
+                if ($host ne $Apache::lonnet::perlvar{'lonHostID'}) {
+                    unless (grep(/^\Q$host\E$/,@subscribed)) {
+                        push(@subscribed,$host);
+                    }
+                }
+            }
+        }
+    }
+    return @subscribed;
 }
 
 sub check_switchserver {
@@ -4606,7 +5692,7 @@ sub check_switchserver {
     my @ids=&Apache::lonnet::current_machine_ids();
     foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
     if (!$allowed) {
-	$switchserver='<a href="/adm/switchserver?otherserver='.$home.'&role=dc./'.$dom.'/">'.&mt('Switch Server').'</a>';
+	$switchserver='<a href="/adm/switchserver?otherserver='.$home.'&amp;role=dc./'.$dom.'/&amp;destinationurl=/adm/domainprefs">'.&mt('Switch Server').'</a>';
     }
     return $switchserver;
 }
@@ -4617,7 +5703,7 @@ sub modify_quotas {
         %limithash,$toolregexp,%conditions,$resulttext,%changes);
     if ($action eq 'quotas') {
         $context = 'tools'; 
-    } else { 
+    } else {
         $context = $action;
     }
     if ($context eq 'requestcourses') {
@@ -4627,8 +5713,11 @@ sub modify_quotas {
         %titles = &courserequest_titles();
         $toolregexp = join('|',@usertools);
         %conditions = &courserequest_conditions();
+    } elsif ($context eq 'requestauthor') {
+        @usertools = ('author');
+        %titles = &authorrequest_titles();
     } else {
-        @usertools = ('aboutme','blog','portfolio');
+        @usertools = ('aboutme','blog','webdav','portfolio');
         %titles = &tool_titles();
     }
     my %domdefaults = &Apache::lonnet::get_domain_defaults($dom);
@@ -4644,6 +5733,10 @@ sub modify_quotas {
                     $confhash{$item}{$type} = $env{$key};
                 }
             }
+        } elsif ($context eq 'requestauthor') {
+            if ($key =~ /^\Qform.authorreq_\E(.+)$/) {
+                $confhash{$1} = $env{$key};
+            }
         } else {
             if ($key =~ /^form\.quota_(.+)$/) {
                 $confhash{'defaultquota'}{$1} = $env{$key};
@@ -4653,7 +5746,7 @@ sub modify_quotas {
             }
         }
     }
-    if ($context eq 'requestcourses') {
+    if (($context eq 'requestcourses') || ($context eq 'requestauthor')) {
         my @approvalnotify = &Apache::loncommon::get_env_multiple('form.reqapprovalnotify');
         @approvalnotify = sort(@approvalnotify);
         $confhash{'notify'}{'approval'} = join(',',@approvalnotify);
@@ -4663,12 +5756,12 @@ sub modify_quotas {
                     $changes{'notify'}{'approval'} = 1;
                 }
             } else {
-                if ($domconfig{$action}{'notify'}{'approval'}) {
+                if ($confhash{'notify'}{'approval'}) {
                     $changes{'notify'}{'approval'} = 1;
                 }
             }
         } else {
-            if ($domconfig{$action}{'notify'}{'approval'}) {
+            if ($confhash{'notify'}{'approval'}) {
                 $changes{'notify'}{'approval'} = 1;
             }
         }
@@ -4689,6 +5782,11 @@ sub modify_quotas {
                         $confhash{$item}{$type} .= $limithash{$item}{$type};
                     }
                 }
+            } elsif ($context eq 'requestauthor') {
+                $unset = '0';
+                if ($type eq '_LC_adv') {
+                    $unset = '';
+                }
             } else {
                 if (grep(/^\Q$type\E$/,@{$toolshash{$item}})) {
                     $confhash{$item}{$type} = 1;
@@ -4697,7 +5795,11 @@ sub modify_quotas {
                 }
             }
             if (ref($domconfig{$action}) eq 'HASH') {
-                if (ref($domconfig{$action}{$item}) eq 'HASH') {
+                if ($action eq 'requestauthor') {
+                    if ($domconfig{$action}{$type} ne $confhash{$type}) {
+                        $changes{$type} = 1;
+                    }
+                } elsif (ref($domconfig{$action}{$item}) eq 'HASH') {
                     if ($domconfig{$action}{$item}{$type} ne $confhash{$item}{$type}) {
                         $changes{$item}{$type} = 1;
                     }
@@ -4717,6 +5819,10 @@ sub modify_quotas {
                     if ($confhash{$item}{$type} ne $unset) {
                         $changes{$item}{$type} = 1;
                     }
+                } elsif ($context eq 'requestauthor') {
+                    if ($confhash{$type} ne $unset) {
+                        $changes{$type} = 1;
+                    }
                 } else {
                     if (!$confhash{$item}{$type}) {
                         $changes{$item}{$type} = 1;
@@ -4725,7 +5831,7 @@ sub modify_quotas {
             }
         }
     }
-    unless ($context eq 'requestcourses') {
+    unless (($context eq 'requestcourses') || ($context eq 'requestauthor')) {
         if (ref($domconfig{'quotas'}) eq 'HASH') {
             if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
                 foreach my $key (keys(%{$domconfig{'quotas'}{'defaultquota'}})) {
@@ -4768,10 +5874,14 @@ sub modify_quotas {
         }
     }
 
-    foreach my $key (keys(%confhash)) {
-        $domdefaults{$key} = $confhash{$key};
+    if ($context eq 'requestauthor') {
+        $domdefaults{'requestauthor'} = \%confhash;
+    } else {
+        foreach my $key (keys(%confhash)) {
+            $domdefaults{$key} = $confhash{$key};
+        }
     }
-   
+
     my %quotahash = (
                       $action => { %confhash }
                     );
@@ -4783,7 +5893,8 @@ sub modify_quotas {
             &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
 
             $resulttext = &mt('Changes made:').'<ul>';
-            unless ($context eq 'requestcourses') {
+            unless (($context eq 'requestcourses') || 
+                    ($context eq 'requestauthor')) {
                 if (ref($changes{'defaultquota'}) eq 'HASH') {
                     $resulttext .= '<li>'.&mt('Portfolio default quotas').'<ul>';
                     foreach my $type (@{$types},'default') {
@@ -4800,12 +5911,25 @@ sub modify_quotas {
             }
             my %newenv;
             foreach my $item (@usertools) {
-                if (ref($changes{$item}) eq 'HASH') {
+                my (%haschgs,%inconf);
+                if ($context eq 'requestauthor') {
+                    %haschgs = %changes;
+                    %inconf = %confhash; 
+                } else {
+                    if (ref($changes{$item}) eq 'HASH') {
+                        %haschgs = %{$changes{$item}};
+                    }
+                    if (ref($confhash{$item}) eq 'HASH') {
+                        %inconf = %{$confhash{$item}};
+                    }
+                }
+                if (keys(%haschgs) > 0) {
                     my $newacc = 
                         &Apache::lonnet::usertools_access($env{'user.name'},
                                                           $env{'user.domain'},
                                                           $item,'reload',$context);
-                    if ($context eq 'requestcourses') {
+                    if (($context eq 'requestcourses') || 
+                        ($context eq 'requestauthor')) {
                         if ($env{'environment.canrequest.'.$item} ne $newacc) {
                             $newenv{'environment.canrequest.'.$item} = $newacc;
                         }
@@ -4814,34 +5938,40 @@ sub modify_quotas {
                             $newenv{'environment.availabletools.'.$item} = $newacc;
                         }
                     }
-                    $resulttext .= '<li>'.$titles{$item}.'<ul>';
+                    unless ($context eq 'requestauthor') {
+                        $resulttext .= '<li>'.$titles{$item}.'<ul>';
+                    }
                     foreach my $type (@{$types},'default','_LC_adv') {
-                        if ($changes{$item}{$type}) {
+                        if ($haschgs{$type}) {
                             my $typetitle = $usertypes->{$type};
                             if ($type eq 'default') {
                                 $typetitle = $othertitle;
                             } elsif ($type eq '_LC_adv') {
                                 $typetitle = 'LON-CAPA Advanced Users'; 
                             }
-                            if ($confhash{$item}{$type}) {
+                            if ($inconf{$type}) {
                                 if ($context eq 'requestcourses') {
                                     my $cond;
-                                    if ($confhash{$item}{$type} =~ /^autolimit=(\d*)$/) {
+                                    if ($inconf{$type} =~ /^autolimit=(\d*)$/) {
                                         if ($1 eq '') {
                                             $cond = &mt('(Automatic processing of any request).');
                                         } else {
                                             $cond = &mt('(Automatic processing of requests up to limit of [quant,_1,request] per user).',$1);
                                         }
                                     } else { 
-                                        $cond = $conditions{$confhash{$item}{$type}};
+                                        $cond = $conditions{$inconf{$type}};
                                     }
                                     $resulttext .= '<li>'.&mt('Set to be available to [_1].',$typetitle).' '.$cond.'</li>';
+                                } elsif ($context eq 'requestauthor') {
+                                    $resulttext .= '<li>'.&mt('Set to "[_1]" for "[_2]".',
+                                                             $titles{$inconf{$type}},$typetitle);
+
                                 } else {
                                     $resulttext .= '<li>'.&mt('Set to be available to [_1]',$typetitle).'</li>';
                                 }
                             } else {
                                 if ($type eq '_LC_adv') {
-                                    if ($confhash{$item}{$type} eq '0') {
+                                    if ($inconf{$type} eq '0') {
                                         $resulttext .= '<li>'.&mt('Set to be unavailable to [_1]',$typetitle).'</li>';
                                     } else { 
                                         $resulttext .= '<li>'.&mt('No override set for [_1]',$typetitle).'</li>';
@@ -4852,17 +5982,19 @@ sub modify_quotas {
                             }
                         }
                     }
-                    $resulttext .= '</ul></li>';
+                    unless ($context eq 'requestauthor') {
+                        $resulttext .= '</ul></li>';
+                    }
                 }
             }
-            if ($action eq 'requestcourses') {
+            if (($action eq 'requestcourses') || ($action eq 'requestauthor')) {
                 if (ref($changes{'notify'}) eq 'HASH') {
                     if ($changes{'notify'}{'approval'}) {
                         if (ref($confhash{'notify'}) eq 'HASH') {
                             if ($confhash{'notify'}{'approval'}) {
                                 $resulttext .= '<li>'.&mt('Notification of requests requiring approval will be sent to: ').$confhash{'notify'}{'approval'}.'</li>';
                             } else {
-                                $resulttext .= '<li>'.&mt('No Domain Coordinators will receive notification of course requests requiring approval.').'</li>';
+                                $resulttext .= '<li>'.&mt('No Domain Coordinators will receive notification of requests requiring approval.').'</li>';
                             }
                         }
                     }
@@ -4875,6 +6007,8 @@ sub modify_quotas {
         } else {
             if ($context eq 'requestcourses') {
                 $resulttext = &mt('No changes made to rights to request creation of courses.');
+            } elsif ($context eq 'requestauthor') {
+                $resulttext = &mt('No changes made to rights to request author space.');
             } else {
                 $resulttext = &mt('No changes made to availability of personal information pages, blogs, portfolios or default quotas');
             }
@@ -4989,7 +6123,7 @@ sub modify_autoupdate {
                         middlename => 'Middle Name',
                         generation => 'Generation',
                       );
-    my $othertitle = &mt('All users');
+    $othertitle = &mt('All users');
     if (keys(%{$usertypes}) >  0) {
         $othertitle = &mt('Other users');
     }
@@ -5205,13 +6339,16 @@ sub modify_autocreate {
             foreach my $item (@types) {
                 if ($changes{$item}) {
                     my $newtxt = $offon[$newvals{$item}];
-                    $resulttext .= '<li>'.&mt("$title{$item} set to [_1]$newtxt [_2]",'<b>','</b>').'</li>';
+                    $resulttext .= '<li>'.
+                                   &mt("$title{$item} set to [_1]$newtxt [_2]",
+                                       '<b>','</b>').
+                                   '</li>';
                 }
             }
             if ($changes{'xmldc'}) {
                 my ($dcname,$dcdom) = split(':',$newvals{'xmldc'});
                 my $newtxt = &Apache::loncommon::plainname($dcname,$dcdom);
-                $resulttext .= '<li>'.&mt("$title{'xmldc'} set to [_1]$newtxt [_2]",'<b>','</b>').'</li>'; 
+                $resulttext .= '<li>'.&mt("$title{'xmldc'} set to [_1]",'<b>'.$newtxt.'</b>').'</li>'; 
             }
             $resulttext .= '</ul>';
         } else {
@@ -5357,7 +6494,11 @@ sub modify_directorysrch {
                         } else {
                             $chgtext =~ s/\; $//;
                         }
-                        $resulttext .= '<li>'.&mt("Users from domain '<span class=\"LC_cusr_emph\">[_1]</span>' permitted to search the institutional directory set to: [_2]",$dom,$chgtext).'</li>';
+                        $resulttext .= 
+                            '<li>'.
+                            &mt("Users from domain '[_1]' permitted to search the institutional directory set to: [_2]",
+                                '<span class="LC_cusr_emph">'.$dom.'</span>',$chgtext).
+                            '</li>';
                     }
                 }
             }
@@ -5385,7 +6526,7 @@ sub modify_directorysrch {
                     }
                 }
                 $chgtext =~ s/\; $//;
-                $resulttext .= '<li>'.&mt("$title{'searchtypes'} set to: \"[_1]\"",$chgtext).'</li>';
+                $resulttext .= '<li>'.&mt($title{'searchtypes'}.' set to: "[_1]"',$chgtext).'</li>';
             }
             $resulttext .= '</ul>';
         } else {
@@ -5409,7 +6550,7 @@ sub modify_contacts {
     my (%others,%to,%bcc);
     my @contacts = ('supportemail','adminemail');
     my @mailings = ('errormail','packagesmail','helpdeskmail','lonstatusmail',
-                    'requestsmail');
+                    'requestsmail','updatesmail');
     foreach my $type (@mailings) {
         @{$newsetting{$type}} = 
             &Apache::loncommon::get_env_multiple('form.'.$type);
@@ -5465,6 +6606,7 @@ sub modify_contacts {
         $default{'helpdeskmail'} = 'supportemail';
         $default{'lonstatusmail'} = 'adminemail';
         $default{'requestsmail'} = 'adminemail';
+        $default{'updatesmail'} = 'adminemail';
         foreach my $item (@contacts) {
            if ($to{$item} ne $default{$item}) {
               $changes{$item} = 1;
@@ -5569,6 +6711,7 @@ sub modify_usercreation {
         }
         push(@contexts,'statustocreate');
     }
+    &process_captcha('cancreate',\%changes,\%cancreate,\%curr_usercreation);
     if (ref($curr_usercreation{'cancreate'}) eq 'HASH') {
         foreach my $item (@contexts) {
             if (($item eq 'selfcreate') || ($item eq 'statustocreate')) {
@@ -5751,7 +6894,7 @@ sub modify_usercreation {
                 my %lt = &usercreation_types();
                 foreach my $type (@{$changes{'cancreate'}}) {
                     my $chgtext;
-                    unless ($type eq 'statustocreate') {
+                    unless (($type eq 'statustocreate') || ($type eq 'captcha') || ($type eq 'recaptchakeys')) {
                         $chgtext = $lt{$type}.', ';
                     }
                     if ($type eq 'selfcreate') {
@@ -5810,6 +6953,35 @@ sub modify_usercreation {
                                 }
                             }
                         }
+                    } elsif ($type eq 'captcha') {
+                        if ($cancreate{$type} eq 'notused') {
+                            $chgtext .= &mt('No CAPTCHA validation in use for self-creation screen.');
+                        } else {
+                            my %captchas = &captcha_phrases();
+                            if ($captchas{$cancreate{$type}}) {
+                                $chgtext .= &mt("Validation for self-creation screen set to $captchas{$cancreate{$type}}.");
+                            } else {
+                                $chgtext .= &mt('Validation for self-creation screen set to unknown type.'); 
+                            }
+                        }
+                    } elsif ($type eq 'recaptchakeys') {
+                        my ($privkey,$pubkey);
+                        if (ref($cancreate{$type}) eq 'HASH') {
+                            $pubkey = $cancreate{$type}{'public'};
+                            $privkey = $cancreate{$type}{'private'};
+                        }
+                        $chgtext .= &mt('ReCAPTCHA keys changes').'<ul>';
+                        if (!$pubkey) {
+                            $chgtext .= '<li>'.&mt('Public key deleted').'</li>';
+                        } else {
+                            $chgtext .= '<li>'.&mt('Public key set to [_1]',$pubkey).'</li>';
+                        }
+                        if (!$privkey) {
+                            $chgtext .= '<li>'.&mt('Private key deleted').'</li>';
+                        } else {
+                            $chgtext .= '<li>'.&mt('Private key set to [_1]',$pubkey).'</li>';
+                        }
+                        $chgtext .= '</ul>';
                     } else {
                         if ($cancreate{$type} eq 'none') {
                             $chgtext .= &mt('creation of new users is not permitted, except by a Domain Coordinator.');
@@ -5909,6 +7081,59 @@ sub modify_usercreation {
     return $resulttext;
 }
 
+sub process_captcha {
+    my ($container,$changes,$newsettings,$current) = @_;
+    return unless ((ref($changes) eq 'HASH') && (ref($newsettings) eq 'HASH') || (ref($current) eq 'HASH'));
+    $newsettings->{'captcha'} = $env{'form.'.$container.'_captcha'};
+    unless ($newsettings->{'captcha'} eq 'recaptcha' || $newsettings->{'captcha'} eq 'notused') {
+        $newsettings->{'captcha'} = 'original';
+    }
+    if ($current->{'captcha'} ne $newsettings->{'captcha'}) {
+        if ($container eq 'cancreate') { 
+            if (ref($changes->{'cancreate'}) eq 'ARRAY') {
+                push(@{$changes->{'cancreate'}},'captcha');
+            } elsif (!defined($changes->{'cancreate'})) {
+                $changes->{'cancreate'} = ['captcha'];
+            }
+        } else {
+            $changes->{'captcha'} = 1;
+        }
+    }
+    my ($newpub,$newpriv,$currpub,$currpriv);
+    if ($newsettings->{'captcha'} eq 'recaptcha') {
+        $newpub = $env{'form.'.$container.'_recaptchapub'};
+        $newpriv = $env{'form.'.$container.'_recaptchapriv'};
+        $newpub =~ s/\W//g;
+        $newpriv =~ s/\W//g;
+        $newsettings->{'recaptchakeys'} = {
+                                             public  => $newpub,
+                                             private => $newpriv,
+                                          };
+    }
+    if (ref($current->{'recaptchakeys'}) eq 'HASH') {
+        $currpub = $current->{'recaptchakeys'}{'public'};
+        $currpriv = $current->{'recaptchakeys'}{'private'};
+        unless ($newsettings->{'captcha'} eq 'recaptcha') {
+            $newsettings->{'recaptchakeys'} = {
+                                                 public  => '',
+                                                 private => '',
+                                              }
+        }
+    }
+    if (($newpub ne $currpub) || ($newpriv ne $currpriv)) {
+        if ($container eq 'cancreate') {
+            if (ref($changes->{'cancreate'}) eq 'ARRAY') {
+                push(@{$changes->{'cancreate'}},'recaptchakeys');
+            } elsif (!defined($changes->{'cancreate'})) {
+                $changes->{'cancreate'} = ['recaptchakeys'];
+            }
+        } else {
+            $changes->{'recaptchakeys'} = 1; 
+        }
+    }
+    return;
+}
+
 sub modify_usermodification {
     my ($dom,%domconfig) = @_;
     my ($resulttext,%curr_usermodification,%changes);
@@ -6491,7 +7716,6 @@ sub modify_serverstatuses {
     my %serverstatushash =  (
                                 serverstatuses => \%newserverstatus,
                             );
-    my %changes;
     foreach my $type (@pages) {
         foreach my $setting ('namedusers','machines') {
             my (@current,@new);
@@ -6566,122 +7790,56 @@ sub modify_serverstatuses {
 
 sub modify_helpsettings {
     my ($r,$dom,$confname,%domconfig) = @_;
- 	my ($resulttext,$errors,%changes,%helphash);
- 	
- 	my $customhelpfile  = $env{'form.loginhelpurl.filename'};
-    my $defaulthelpfile = 'defaulthelp.html';
- 	my $servadm = $r->dir_config('lonAdmEMail');
-    my ($configuserok,$author_ok,$switchserver) = 
-        &config_check($dom,$confname,$servadm);
- 	
- 	my %defaultchecked = ('submitbugs'	=> 'on');
- 	my @offon = ('off','on');
-    my %title = ( submitbugs     => 'Display link for users to submit a bug', 
-    			  loginhelpurl  => 'Unauthenticated login help page set to custom file');
-    			  
+    my ($resulttext,$errors,%changes,%helphash);
+    my %defaultchecked = ('submitbugs' => 'on');
+    my @offon = ('off','on');
     my @toggles = ('submitbugs');
-
-    $helphash{'helpsettings'} = {};
-    
-    if (ref($domconfig{'helpsettings'}) ne 'HASH') {
-        if ($domconfig{'helpsettings'} eq '') {
-            $domconfig{'helpsettings'} = {};
-        }
-    }
-    
     if (ref($domconfig{'helpsettings'}) eq 'HASH') {
-    	
         foreach my $item (@toggles) {
-        	
-			if ($defaultchecked{$item} eq 'on') { 
-				if (($domconfig{'helpsettings'}{$item} eq '') &&
-					 ($env{'form.'.$item} eq '0')) {
-					$changes{$item} = 1;
-				} elsif ($domconfig{'helpsettings'}{$item} ne $env{'form.'.$item}) {
-					$changes{$item} = 1;
-				}
-			} elsif ($defaultchecked{$item} eq 'off') {
-				if (($domconfig{'helpsettings'}{$item} eq '') &&
-					 ($env{'form.'.$item} eq '1')) {
-					$changes{$item} = 1;
-				} elsif ($domconfig{'helpsettings'}{$item} ne $env{'form.'.$item}) {
-					$changes{$item} = 1;
-				}
-			}
-			$helphash{'helpsettings'}{$item} = $env{'form.'.$item};
-		}
-		
-		if ($customhelpfile ne '') {
-			my $error;
-			if ($configuserok eq 'ok') {
-				if ($switchserver) {
-					$error = &mt("Upload of custom help file is not permitted to this server: [_1]",$switchserver);
-				} else {
-					if ($author_ok eq 'ok') {
-						my ($result,$loginhelpurl) =
-							&publishlogo($r,'upload','loginhelpurl',$dom,
-										 $confname,'help','','',$customhelpfile);
-						if ($result eq 'ok') {
-							$helphash{'helpsettings'}{'loginhelpurl'} = $loginhelpurl;
-							$changes{'loginhelpurl'} = 1;
-						} else {
-							$error = &mt("Upload of [_1] failed because an error occurred publishing the file in RES space. Error was: [_2].",$customhelpfile,$result);
-						}
-					} else {
-						$error = &mt("Upload of [_1] failed because an author role could not be assigned to a Domain Configuration user ([_2]) in domain: [_3].  Error was: [_4].",$customhelpfile,$confname,$dom,$author_ok);
-					}
-				}
-			} else {
-				$error = &mt("Upload of [_1] failed because a Domain Configuration user ([_2]) could not be created in domain: [_3].  Error was: [_4].",$customhelpfile,$confname,$dom,$configuserok);
-			}
-			if ($error) {
-				&Apache::lonnet::logthis($error);
-				$errors .= '<li><span class="LC_error">'.$error.'</span></li>';
-			}
-		}
-		
-        if ($domconfig{'helpsettings'}{'loginhelpurl'} ne '') {
-            if ($env{'form.loginhelpurl_del'}) {
-                $helphash{'helpsettings'}{'loginhelpurl'} = '';
-                $changes{'loginhelpurl'} = 1;
+            if ($defaultchecked{$item} eq 'on') { 
+                if ($domconfig{'helpsettings'}{$item} eq '') {
+                    if ($env{'form.'.$item} eq '0') {
+                        $changes{$item} = 1;
+                    }
+                } elsif ($domconfig{'helpsettings'}{$item} ne $env{'form.'.$item}) {
+                    $changes{$item} = 1;
+                }
+            } elsif ($defaultchecked{$item} eq 'off') {
+                if ($domconfig{'helpsettings'}{$item} eq '') {
+                    if ($env{'form.'.$item} eq '1') {
+                        $changes{$item} = 1;
+                    }
+                } elsif ($domconfig{'helpsettings'}{$item} ne $env{'form.'.$item}) {
+                    $changes{$item} = 1;
+                }
+            }
+            if (($env{'form.'.$item} eq '0') || ($env{'form.'.$item} eq '1')) { 
+                $helphash{'helpsettings'}{$item} = $env{'form.'.$item};
             }
         }
     }
-    
-    
     my $putresult;
-    
     if (keys(%changes) > 0) {
-    	$putresult = &Apache::lonnet::put_dom('configuration',\%helphash,$dom);
-    } else {
-    	$putresult = 'ok';
-    }
-                                             
-    if ($putresult eq 'ok') {
-        if (keys(%changes) > 0) {
-			$resulttext = &mt('Changes made:').'<ul>';
-			foreach my $item (sort(keys(%changes))) {
-				if ($item eq 'submitbugs') {
-					$resulttext .= '<li>'.&mt("$title{$item} set to $offon[$env{'form.'.$item}]").'</li>';
-				}
-				if ($item eq 'loginhelpurl') {
-					if ($helphash{'helpsettings'}{'loginhelpurl'} eq '') {
-                        $resulttext .= '<li>'.&mt('[_1] help file removed; [_2] file will be used for the unathorized help page in this domain.',$customhelpfile,$defaulthelpfile).'</li>';
-                    } else {
-                        $resulttext .= '<li>'.&mt("$title{$item} [_1]",$customhelpfile).'</li>';
-                    }
-				}
-			}
-			$resulttext .= '</ul>';
-		} else {
-			$resulttext = &mt('No changes made to help settings');
-		}
-    } else {
-        $resulttext = '<span class="LC_error">'.
-	    &mt('An error occurred: [_1]',$putresult).'</span>';
+        $putresult = &Apache::lonnet::put_dom('configuration',\%helphash,$dom);
+        if ($putresult eq 'ok') {
+            $resulttext = &mt('Changes made:').'<ul>';
+            foreach my $item (sort(keys(%changes))) {
+                if ($item eq 'submitbugs') {
+                    $resulttext .= '<li>'.&mt('Display link to: [_1] set to "'.$offon[$env{'form.'.$item}].'".',
+                                              &Apache::loncommon::modal_link('http://bugs.loncapa.org',
+                                              &mt('LON-CAPA bug tracker'),600,500)).'</li>';
+                }
+            }
+            $resulttext .= '</ul>';
+        } else {
+            $resulttext = &mt('No changes made to help settings');
+            $errors .= '<li><span class="LC_error">'.
+                       &mt('An error occurred storing the settings: [_1]',
+                           $putresult).'</span></li>';
+        }
     }
     if ($errors) {
-        $resulttext .= &mt('The following errors occurred: ').'<ul>'.
+        $resulttext .= '<br />'.&mt('The following errors occurred: ').'<ul>'.
                        $errors.'</ul>';
     }
     return $resulttext;
@@ -6691,7 +7849,6 @@ sub modify_coursedefaults {
     my ($dom,%domconfig) = @_;
     my ($resulttext,$errors,%changes,%defaultshash);
     my %defaultchecked = ('canuse_pdfforms' => 'off');
-    my @offon = ('off','on');
     my @toggles = ('canuse_pdfforms');
 
     $defaultshash{'coursedefaults'} = {};
@@ -6708,7 +7865,7 @@ sub modify_coursedefaults {
                 if (($domconfig{'coursedefaults'}{$item} eq '') &&
                     ($env{'form.'.$item} eq '0')) {
                     $changes{$item} = 1;
-                } elsif ($domconfig{'coursdefaults'}{$item} ne $env{'form.'.$item}) {
+                } elsif ($domconfig{'coursedefaults'}{$item} ne $env{'form.'.$item}) {
                     $changes{$item} = 1;
                 }
             } elsif ($defaultchecked{$item} eq 'off') {
@@ -6733,14 +7890,42 @@ sub modify_coursedefaults {
                 $changes{'anonsurvey_threshold'} = 1;
             }
         }
+        my $officialcreds = $env{'form.official_credits'};
+        $officialcreds =~ s/^[^\d\.]//g;
+        my $unofficialcreds = $env{'form.unofficial_credits'};
+        $unofficialcreds =~ s/^[^\d\.]//g;
+        if (ref($domconfig{'coursedefaults'}{'coursecredits'} ne 'HASH') &&
+                ($env{'form.coursecredits'} eq '1')) {
+                $changes{'coursecredits'} = 1;
+        } else {
+            if (($domconfig{'coursedefaults'}{'coursecredits'}{'official'} ne $officialcreds)  ||
+                ($domconfig{'coursedefaults'}{'coursecredits'}{'unofficial'} ne $unofficialcreds)) {
+                $changes{'coursecredits'} = 1;
+            }
+        }
+        $defaultshash{'coursedefaults'}{'coursecredits'} = {
+            official   => $officialcreds,
+            unofficial => $unofficialcreds,
+        }
     }
     my $putresult = &Apache::lonnet::put_dom('configuration',\%defaultshash,
                                              $dom);
     if ($putresult eq 'ok') {
+        my %domdefaults;
         if (keys(%changes) > 0) {
-            if ($changes{'canuse_pdfforms'}) {
-                my %domdefaults = &Apache::lonnet::get_domain_defaults($dom);
-                $domdefaults{'canuse_pdfforms'}=$defaultshash{'coursedefaults'}{'canuse_pdfforms'};
+            if (($changes{'canuse_pdfforms'}) || ($changes{'coursecredits'})) {
+                %domdefaults = &Apache::lonnet::get_domain_defaults($dom);
+                if ($changes{'canuse_pdfforms'}) {
+                    $domdefaults{'canuse_pdfforms'}=$defaultshash{'coursedefaults'}{'canuse_pdfforms'};
+                }
+                if ($changes{'coursecredits'}) {
+                    if (ref($defaultshash{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
+                        $domdefaults{'officialcredits'} =
+                            $defaultshash{'coursedefaults'}{'coursecredits'}{'official'};
+                        $domdefaults{'unofficialcredits'} =
+                            $defaultshash{'coursedefaults'}{'coursecredits'}{'unofficial'};
+                    }
+                }
                 my $cachetime = 24*60*60;
                 &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
             }
@@ -6753,7 +7938,22 @@ sub modify_coursedefaults {
                         $resulttext .= '<li>'.&mt('Course/Community users can create/upload PDF forms set to "off"').'</li>';
                     }
                 } elsif ($item eq 'anonsurvey_threshold') {
-                        $resulttext .= '<li>'.&mt('Responder count required for display of anonymous survey submissions set to [_1].',$defaultshash{'coursedefaults'}{'anonsurvey_threshold'}).'</li>';
+                    $resulttext .= '<li>'.&mt('Responder count required for display of anonymous survey submissions set to [_1].',$defaultshash{'coursedefaults'}{'anonsurvey_threshold'}).'</li>';
+                } elsif ($item eq 'coursecredits') {
+                    if (ref($defaultshash{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
+                        if (($domdefaults{'officialcredits'} eq '') &&
+                            ($domdefaults{'unofficialcredits'} eq '')) {
+                            $resulttext .= '<li>'.&mt('Student credits not in use for courses in this domain').'</li>';
+                        } else {
+                            $resulttext .= '<li>'.&mt('Student credits can be set per course by a Domain Coordinator, with the following defaults applying:').'<ul>'.
+                                           '<li>'.&mt('Official courses: [_1]',$defaultshash{'coursedefaults'}{'coursecredits'}{'official'}).'</li>'.
+                                           '<li>'.&mt('Unofficial courses: [_1]',$defaultshash{'coursedefaults'}{'coursecredits'}{'unofficial'}).'</li>'.
+                                           '</ul>'.
+                                           '</li>';
+                        }
+                    } else {
+                        $resulttext .= '<li>'.&mt('Student credits not in use for courses in this domain').'</li>';
+                    }
                 }
             }
             $resulttext .= '</ul>';
@@ -6769,8 +7969,14 @@ sub modify_coursedefaults {
 
 sub modify_usersessions {
     my ($dom,%domconfig) = @_;
-    my @types = ('version','excludedomain','includedomain');
-    my @prefixes = ('remote','hosted');
+    my @hostingtypes = ('version','excludedomain','includedomain');
+    my @offloadtypes = ('primary','default');
+    my %types = (
+                  remote => \@hostingtypes,
+                  hosted => \@hostingtypes,
+                  spares => \@offloadtypes,
+                );
+    my @prefixes = ('remote','hosted','spares');
     my @lcversions = &Apache::lonnet::all_loncaparevs();
     my (%by_ip,%by_location,@intdoms);
     &build_location_hashes(\@intdoms,\%by_ip,\%by_location);
@@ -6783,7 +7989,8 @@ sub modify_usersessions {
     my $resulttext;
     my %iphost = &Apache::lonnet::get_iphost();
     foreach my $prefix (@prefixes) {
-        foreach my $type (@types) {
+        next if ($prefix eq 'spares');
+        foreach my $type (@{$types{$prefix}}) {
             my $inuse = $env{'form.'.$prefix.'_'.$type.'_inuse'};
             if ($type eq 'version') {
                 my $value = $env{'form.'.$prefix.'_'.$type};
@@ -6875,7 +8082,72 @@ sub modify_usersessions {
             }
         }
     }
-    if (keys(%changes) > 0) {
+
+    my @alldoms = &Apache::lonnet::all_domains();
+    my %servers = &Apache::lonnet::internet_dom_servers($dom);
+    my %spareid = &current_offloads_to($dom,$domconfig{'usersessions'},\%servers);
+    my $savespares;
+
+    foreach my $lonhost (sort(keys(%servers))) {
+        my $serverhomeID =
+            &Apache::lonnet::get_server_homeID($servers{$lonhost});
+        my $serverhostname = &Apache::lonnet::hostname($lonhost);
+        $defaultshash{'usersessions'}{'spares'}{$lonhost} = {};
+        my %spareschg;
+        foreach my $type (@{$types{'spares'}}) {
+            my @okspares;
+            my @checked = &Apache::loncommon::get_env_multiple('form.spare_'.$type.'_'.$lonhost);
+            foreach my $server (@checked) {
+                if (&Apache::lonnet::hostname($server) ne '') {
+                    unless (&Apache::lonnet::hostname($server) eq $serverhostname) {
+                        unless (grep(/^\Q$server\E$/,@okspares)) {
+                            push(@okspares,$server);
+                        }
+                    }
+                }
+            }
+            my $new = $env{'form.newspare_'.$type.'_'.$lonhost};
+            my $newspare;
+            if (($new ne '') && (&Apache::lonnet::hostname($new))) {
+                unless (&Apache::lonnet::hostname($new) eq $serverhostname) {
+                    $newspare = $new;
+                }
+            }
+            my @spares;
+            if (($newspare ne '') && (!grep(/^\Q$newspare\E$/,@okspares))) {
+                @spares = sort(@okspares,$newspare);
+            } else {
+                @spares = sort(@okspares);
+            }
+            $defaultshash{'usersessions'}{'spares'}{$lonhost}{$type} = \@spares;
+            if (ref($spareid{$lonhost}) eq 'HASH') {
+                if (ref($spareid{$lonhost}{$type}) eq 'ARRAY') {
+                    my @diffs = &Apache::loncommon::compare_arrays($spareid{$lonhost}{$type},\@spares);
+                    if (@diffs > 0) {
+                        $spareschg{$type} = 1;
+                    }
+                }
+            }
+        }
+        if (keys(%spareschg) > 0) {
+            $changes{'spares'}{$lonhost} = \%spareschg;
+        }
+    }
+
+    if (ref($domconfig{'usersessions'}) eq 'HASH') {
+        if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
+            if (ref($changes{'spares'}) eq 'HASH') {
+                if (keys(%{$changes{'spares'}}) > 0) {
+                    $savespares = 1;
+                }
+            }
+        } else {
+            $savespares = 1;
+        }
+    }
+
+    my $nochgmsg = &mt('No changes made to settings for user session hosting/offloading.');
+    if ((keys(%changes) > 0) || ($savespares)) {
         my $putresult = &Apache::lonnet::put_dom('configuration',\%defaultshash,
                                                  $dom);
         if ($putresult eq 'ok') {
@@ -6889,49 +8161,277 @@ sub modify_usersessions {
             }
             my $cachetime = 24*60*60;
             &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
-            my %lt = &usersession_titles();
-            $resulttext = &mt('Changes made:').'<ul>';
-            foreach my $prefix (@prefixes) {
-                if (ref($changes{$prefix}) eq 'HASH') {
-                    $resulttext .= '<li>'.$lt{$prefix}.'<ul>';
-                    foreach my $type (@types) {
-                        if (defined($changes{$prefix}{$type})) {
-                            my $newvalue;
-                            if (ref($defaultshash{'usersessions'}) eq 'HASH') {
-                                if (ref($defaultshash{'usersessions'}{$prefix})) {
-                                    if ($type eq 'version') {
-                                        $newvalue = $defaultshash{'usersessions'}{$prefix}{$type};
-                                    } elsif (ref($defaultshash{'usersessions'}{$prefix}{$type}) eq 'ARRAY') {
-                                        if (@{$defaultshash{'usersessions'}{$prefix}{$type}} > 0) {
-                                            $newvalue = join(', ',@{$defaultshash{'usersessions'}{$prefix}{$type}});
+            if (keys(%changes) > 0) {
+                my %lt = &usersession_titles();
+                $resulttext = &mt('Changes made:').'<ul>';
+                foreach my $prefix (@prefixes) {
+                    if (ref($changes{$prefix}) eq 'HASH') {
+                        $resulttext .= '<li>'.$lt{$prefix}.'<ul>';
+                        if ($prefix eq 'spares') {
+                            if (ref($changes{$prefix}) eq 'HASH') {
+                                foreach my $lonhost (sort(keys(%{$changes{$prefix}}))) {
+                                    $resulttext .= '<li><b>'.$lonhost.'</b> ';
+                                    my $lonhostdom = &Apache::lonnet::host_domain($lonhost);
+                                    &Apache::lonnet::remote_devalidate_cache($lonhost,'spares',$lonhostdom);
+                                    if (ref($changes{$prefix}{$lonhost}) eq 'HASH') {
+                                        foreach my $type (@{$types{$prefix}}) {
+                                            if ($changes{$prefix}{$lonhost}{$type}) {
+                                                my $offloadto = &mt('None');
+                                                if (ref($defaultshash{'usersessions'}{'spares'}{$lonhost}{$type}) eq 'ARRAY') {
+                                                    if (@{$defaultshash{'usersessions'}{'spares'}{$lonhost}{$type}} > 0) {   
+                                                        $offloadto = join(', ',@{$defaultshash{'usersessions'}{'spares'}{$lonhost}{$type}});
+                                                    }
+                                                }
+                                                $resulttext .= &mt('[_1] set to: [_2].','<i>'.$lt{$type}.'</i>',$offloadto).('&nbsp;'x3);
+                                            }
                                         }
                                     }
+                                    $resulttext .= '</li>';
                                 }
                             }
-                            if ($newvalue eq '') {
-                                if ($type eq 'version') {
-                                    $resulttext .= '<li>'.&mt('[_1] set to: off',$lt{$type}).'</li>';
+                        } else {
+                            foreach my $type (@{$types{$prefix}}) {
+                                if (defined($changes{$prefix}{$type})) {
+                                    my $newvalue;
+                                    if (ref($defaultshash{'usersessions'}) eq 'HASH') {
+                                        if (ref($defaultshash{'usersessions'}{$prefix})) {
+                                            if ($type eq 'version') {
+                                                $newvalue = $defaultshash{'usersessions'}{$prefix}{$type};
+                                            } elsif (ref($defaultshash{'usersessions'}{$prefix}{$type}) eq 'ARRAY') {
+                                                if (@{$defaultshash{'usersessions'}{$prefix}{$type}} > 0) {
+                                                    $newvalue = join(', ',@{$defaultshash{'usersessions'}{$prefix}{$type}});
+                                                }
+                                            }
+                                        }
+                                    }
+                                    if ($newvalue eq '') {
+                                        if ($type eq 'version') {
+                                            $resulttext .= '<li>'.&mt('[_1] set to: off',$lt{$type}).'</li>';
+                                        } else {
+                                            $resulttext .= '<li>'.&mt('[_1] set to: none',$lt{$type}).'</li>';
+                                        }
+                                    } else {
+                                        if ($type eq 'version') {
+                                            $newvalue .= ' '.&mt('(or later)'); 
+                                        }
+                                        $resulttext .= '<li>'.&mt('[_1] set to: [_2].',$lt{$type},$newvalue).'</li>';
+                                    }
+                                }
+                            }
+                        }
+                        $resulttext .= '</ul>';
+                    }
+                }
+                $resulttext .= '</ul>';
+            } else {
+                $resulttext = $nochgmsg;
+            }
+        } else {
+            $resulttext = '<span class="LC_error">'.
+                          &mt('An error occurred: [_1]',$putresult).'</span>';
+        }
+    } else {
+        $resulttext = $nochgmsg;
+    }
+    return $resulttext;
+}
+
+sub modify_loadbalancing {
+    my ($dom,%domconfig) = @_;
+    my $primary_id = &Apache::lonnet::domain($dom,'primary');
+    my $intdom = &Apache::lonnet::internet_dom($primary_id);
+    my ($othertitle,$usertypes,$types) =
+        &Apache::loncommon::sorted_inst_types($dom);
+    my %servers = &Apache::lonnet::internet_dom_servers($dom);
+    my @sparestypes = ('primary','default');
+    my %typetitles = &sparestype_titles();
+    my $resulttext;
+    my (%currbalancer,%currtargets,%currrules,%existing);
+    if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
+        %existing = %{$domconfig{'loadbalancing'}};
+    }
+    &get_loadbalancers_config(\%servers,\%existing,\%currbalancer,
+                              \%currtargets,\%currrules);
+    my ($saveloadbalancing,%defaultshash,%changes);
+    my ($alltypes,$othertypes,$titles) =
+        &loadbalancing_titles($dom,$intdom,$usertypes,$types);
+    my %ruletitles = &offloadtype_text();
+    my @deletions = &Apache::loncommon::get_env_multiple('form.loadbalancing_delete');
+    for (my $i=0; $i<$env{'form.loadbalancing_total'}; $i++) {
+        my $balancer = $env{'form.loadbalancing_lonhost_'.$i};
+        if ($balancer eq '') {
+            next;
+        }
+        if (!exists($servers{$balancer})) { 
+            if (exists($currbalancer{$balancer})) {
+                push(@{$changes{'delete'}},$balancer);
+            }
+            next;
+        }
+        if ((@deletions > 0) && (grep(/^\Q$i\E$/,@deletions))) {
+            push(@{$changes{'delete'}},$balancer);
+            next;
+        }
+        if (!exists($currbalancer{$balancer})) {
+            push(@{$changes{'add'}},$balancer);
+        }
+        $defaultshash{'loadbalancing'}{$balancer}{'targets'}{'primary'} = [];
+        $defaultshash{'loadbalancing'}{$balancer}{'targets'}{'default'} = [];
+        $defaultshash{'loadbalancing'}{$balancer}{'rules'} = {};
+        unless (ref($domconfig{'loadbalancing'}) eq 'HASH') {
+            $saveloadbalancing = 1;
+        }
+        foreach my $sparetype (@sparestypes) {
+            my @targets = &Apache::loncommon::get_env_multiple('form.loadbalancing_target_'.$i.'_'.$sparetype);
+            my @offloadto;
+            foreach my $target (@targets) {
+                if (($servers{$target}) && ($target ne $balancer)) {
+                    if ($sparetype eq 'default') {
+                        if (ref($defaultshash{'loadbalancing'}{$balancer}{'targets'}{'primary'}) eq 'ARRAY') {
+                            next if (grep(/^\Q$target\E$/,@{$defaultshash{'loadbalancing'}{$balancer}{'targets'}{'primary'}}));
+                        }
+                    }
+                    unless(grep(/^\Q$target\E$/,@offloadto)) {
+                        push(@offloadto,$target);
+                    }
+                }
+                $defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype} = \@offloadto;
+            }
+        }
+        if (ref($currtargets{$balancer}) eq 'HASH') {
+            foreach my $sparetype (@sparestypes) {
+                if (ref($currtargets{$balancer}{$sparetype}) eq 'ARRAY') {
+                    my @targetdiffs = &Apache::loncommon::compare_arrays($currtargets{$balancer}{$sparetype},$defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype});
+                    if (@targetdiffs > 0) {
+                        $changes{'curr'}{$balancer}{'targets'} = 1;
+                    }
+                } elsif (ref($defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}) eq 'ARRAY') {
+                    if (@{$defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}} > 0) {
+                        $changes{'curr'}{$balancer}{'targets'} = 1;
+                    }
+                }
+            }
+        } else {
+            if (ref($defaultshash{'loadbalancing'}{$balancer}) eq 'HASH') {
+                foreach my $sparetype (@sparestypes) { 
+                    if (ref($defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}) eq 'ARRAY') {
+                        if (@{$defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}} > 0) {
+                            $changes{'curr'}{$balancer}{'targets'} = 1;
+                        }
+                    }
+                }
+            }  
+        }
+        my $ishomedom;
+        if (&Apache::lonnet::host_domain($balancer) eq $dom) {
+            $ishomedom = 1;
+        }
+        if (ref($alltypes) eq 'ARRAY') {
+            foreach my $type (@{$alltypes}) {
+                my $rule;
+                unless ((($type eq '_LC_external') || ($type eq '_LC_internetdom')) && 
+                         (!$ishomedom)) {
+                    $rule = $env{'form.loadbalancing_rules_'.$i.'_'.$type};
+                }
+                if ($rule eq 'specific') {
+                    $rule = $env{'form.loadbalancing_singleserver_'.$i.'_'.$type};
+                }
+                $defaultshash{'loadbalancing'}{$balancer}{'rules'}{$type} = $rule;
+                if (ref($currrules{$balancer}) eq 'HASH') {
+                    if ($rule ne $currrules{$balancer}{$type}) {
+                        $changes{'curr'}{$balancer}{'rules'}{$type} = 1;
+                    }
+                } elsif ($rule ne '') {
+                    $changes{'curr'}{$balancer}{'rules'}{$type} = 1;
+                }
+            }
+        }
+    }
+    my $nochgmsg = &mt('No changes made to Load Balancer settings.');
+    if ((keys(%changes) > 0) || ($saveloadbalancing)) {
+        unless (ref($defaultshash{'loadbalancing'}) eq 'HASH') {
+            $defaultshash{'loadbalancing'} = {};
+        }
+        my $putresult = &Apache::lonnet::put_dom('configuration',
+                                                 \%defaultshash,$dom);
+ 
+        if ($putresult eq 'ok') {
+            if (keys(%changes) > 0) {
+                if (ref($changes{'delete'}) eq 'ARRAY') {
+                    foreach my $balancer (sort(@{$changes{'delete'}})) {
+                        $resulttext .= '<li>'.&mt('Load Balancing discontinued for: [_1]',$balancer).'</li>';
+                        &Apache::lonnet::remote_devalidate_cache($balancer,'loadbalancing',$dom);
+                    }
+                }
+                if (ref($changes{'add'}) eq 'ARRAY') {
+                    foreach my $balancer (sort(@{$changes{'add'}})) {   
+                        $resulttext .= '<li>'.&mt('Load Balancing enabled for: [_1]',$balancer);
+                    }
+                }
+                if (ref($changes{'curr'}) eq 'HASH') {
+                    foreach my $balancer (sort(keys(%{$changes{'curr'}}))) {
+                        if (ref($changes{'curr'}{$balancer}) eq 'HASH') {
+                            if ($changes{'curr'}{$balancer}{'targets'}) {
+                                my %offloadstr;
+                                foreach my $sparetype (@sparestypes) {
+                                    if (ref($defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}) eq 'ARRAY') {
+                                        if (@{$defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}} > 0) {
+                                            $offloadstr{$sparetype} = join(', ',@{$defaultshash{'loadbalancing'}{$balancer}{'targets'}{$sparetype}});
+                                        }
+                                    }
+                                }
+                                if (keys(%offloadstr) == 0) {
+                                    $resulttext .= '<li>'.&mt("Servers to which Load Balance server offloads set to 'None', by default").'</li>';
                                 } else {
-                                    $resulttext .= '<li>'.&mt('[_1] set to: none',$lt{$type}).'</li>';
+                                    my $showoffload;
+                                    foreach my $sparetype (@sparestypes) {
+                                        $showoffload .= '<i>'.$typetitles{$sparetype}.'</i>:&nbsp;';
+                                        if (defined($offloadstr{$sparetype})) {
+                                            $showoffload .= $offloadstr{$sparetype};
+                                        } else {
+                                            $showoffload .= &mt('None');
+                                        }
+                                        $showoffload .= ('&nbsp;'x3);
+                                    }
+                                    $resulttext .= '<li>'.&mt('By default, Load Balancer: [_1] set to offload to - [_2]',$balancer,$showoffload).'</li>';
+                                }
+                            }
+                        }
+                        if (ref($changes{'curr'}{$balancer}{'rules'}) eq 'HASH') {
+                            if ((ref($alltypes) eq 'ARRAY') && (ref($titles) eq 'HASH')) {
+                                foreach my $type (@{$alltypes}) {
+                                    if ($changes{'curr'}{$balancer}{'rules'}{$type}) {
+                                        my $rule = $defaultshash{'loadbalancing'}{$balancer}{'rules'}{$type};
+                                        my $balancetext;
+                                        if ($rule eq '') {
+                                            $balancetext =  $ruletitles{'default'};
+                                        } elsif (($rule eq 'homeserver') || ($rule eq 'externalbalancer')) {
+                                            $balancetext =  $ruletitles{$rule};
+                                        } else {
+                                            $balancetext = &mt('offload to [_1]',$defaultshash{'loadbalancing'}{$balancer}{'rules'}{$type});
+                                        }
+                                        $resulttext .= '<li>'.&mt('Load Balancer: [_1] -- balancing for [_2] set to - "[_3]"',$balancer,$titles->{$type},$balancetext).'</li>';     
+                                    }
                                 }
-                            } else {
-                                if ($type eq 'version') {
-                                    $newvalue .= ' '.&mt('(or later)'); 
-                                } 
-                                $resulttext .= '<li>'.&mt('[_1] set to: [_2].',$lt{$type},$newvalue).'</li>'; 
                             }
                         }
+                        &Apache::lonnet::remote_devalidate_cache($balancer,'loadbalancing',$dom);
                     }
-                    $resulttext .= '</ul>';
                 }
+                if ($resulttext ne '') {
+                    $resulttext = &mt('Changes made:').'<ul>'.$resulttext.'</ul>';
+                } else {
+                    $resulttext = $nochgmsg;
+                }
+            } else {
+                $resulttext = $nochgmsg;
             }
-            $resulttext .= '</ul>';
         } else {
             $resulttext = '<span class="LC_error">'.
                           &mt('An error occurred: [_1]',$putresult).'</span>';
         }
     } else {
-        $resulttext =  &mt('No changes made to settings for user session hosting.');
+        $resulttext = $nochgmsg;
     }
     return $resulttext;
 }
@@ -6970,124 +8470,673 @@ sub recurse_cat_deletes {
                 delete($coursecategories->{$subitem});
                 $deletions->{$subitem} = 1;
                 &recurse_cat_deletes($subitem,$coursecategories,$deletions);
-            }  
-        }
-    }
-    return;
-}
-
-sub dom_servers {
-    my ($dom) = @_;
-    my (%uniqservers,%servers);
-    my $primaryserver = &Apache::lonnet::hostname(&Apache::lonnet::domain($dom,'primary'));
-    my @machinedoms = &Apache::lonnet::machine_domains($primaryserver);
-    foreach my $mdom (@machinedoms) {
-        my %currservers = %servers;
-        my %server = &Apache::lonnet::get_servers($mdom);
-        %servers = (%currservers,%server);
-    }
-    my %by_hostname;
-    foreach my $id (keys(%servers)) {
-        push(@{$by_hostname{$servers{$id}}},$id);
-    }
-    foreach my $hostname (sort(keys(%by_hostname))) {
-        if (@{$by_hostname{$hostname}} > 1) {
-            my $match = 0;
-            foreach my $id (@{$by_hostname{$hostname}}) {
-                if (&Apache::lonnet::host_domain($id) eq $dom) {
-                    $uniqservers{$id} = $hostname;
-                    $match = 1;
-                }
-            }
-            unless ($match) {
-                $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
             }
-        } else {
-            $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
         }
     }
-    return %uniqservers;
+    return;
 }
 
 sub get_active_dcs {
     my ($dom) = @_;
-    my %dompersonnel = &Apache::lonnet::get_domain_roles($dom,['dc']);
+    my $now = time;
+    my %dompersonnel = &Apache::lonnet::get_domain_roles($dom,['dc'],$now,$now);
     my %domcoords;
     my $numdcs = 0;
     my $now = time;
     foreach my $server (keys(%dompersonnel)) {
         foreach my $user (sort(keys(%{$dompersonnel{$server}}))) {
             my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,$user);
-            my ($end,$start) = split(':',$dompersonnel{$server}{$user});
-            if (($end eq '') || ($end == 0) || ($end > $now)) {
-                if ($start <= $now) {
-                    $domcoords{$uname.':'.$udom} = $dompersonnel{$server}{$user};
-                }
-            }
+            $domcoords{$uname.':'.$udom} = $dompersonnel{$server}{$user};
         }
     }
     return %domcoords;
 }
 
 sub active_dc_picker {
-    my ($dom,$curr_dc) = @_;
+    my ($dom,$numinrow,$inputtype,$name,%currhash) = @_;
     my %domcoords = &get_active_dcs($dom); 
-    my @dcs = sort(keys(%domcoords));
-    my $numdcs = scalar(@dcs); 
-    my $datatable;
-    my $numinrow = 2;
+    my @domcoord = keys(%domcoords);
+    if (keys(%currhash)) {
+        foreach my $dc (keys(%currhash)) {
+            unless (exists($domcoords{$dc})) {
+                push(@domcoord,$dc);
+            }
+        }
+    }
+    @domcoord = sort(@domcoord);
+    my $numdcs = scalar(@domcoord); 
+    my $rows = 0;
+    my $table;
     if ($numdcs > 1) {
-        $datatable = '<table>';
-        for (my $i=0; $i<@dcs; $i++) {
+        $table = '<table>';
+        for (my $i=0; $i<@domcoord; $i++) {
             my $rem = $i%($numinrow);
             if ($rem == 0) {
                 if ($i > 0) {
-                    $datatable .= '</tr>';
+                    $table .= '</tr>';
                 }
-                $datatable .= '<tr>';
+                $table .= '<tr>';
+                $rows ++;
             }
-            my $check = ' ';
-            if ($curr_dc eq '') {
-                if (!$i) { 
-                    $check = ' checked="checked" ';
+            my $check = '';
+            if ($inputtype eq 'radio') {
+                if (keys(%currhash) == 0) {
+                    if (!$i) {
+                        $check = ' checked="checked"';
+                    }
+                } elsif (exists($currhash{$domcoord[$i]})) {
+                    $check = ' checked="checked"';
+                }
+            } else {
+                if (exists($currhash{$domcoord[$i]})) {
+                    $check = ' checked="checked"';
                 }
-            } elsif ($dcs[$i] eq $curr_dc) {
-                $check = ' checked="checked" ';
             }
-            if ($i == @dcs - 1) {
+            if ($i == @domcoord - 1) {
                 my $colsleft = $numinrow - $rem;
                 if ($colsleft > 1) {
-                    $datatable .= '<td colspan="'.$colsleft.'">';
+                    $table .= '<td class="LC_left_item" colspan="'.$colsleft.'">';
                 } else {
-                    $datatable .= '<td>';
+                    $table .= '<td class="LC_left_item">';
                 }
             } else {
-                $datatable .= '<td>';
+                $table .= '<td class="LC_left_item">';
+            }
+            my ($dcname,$dcdom) = split(':',$domcoord[$i]);
+            my $user = &Apache::loncommon::plainname($dcname,$dcdom);
+            $table .= '<span class="LC_nobreak"><label>'.
+                      '<input type="'.$inputtype.'" name="'.$name.'"'.
+                      ' value="'.$domcoord[$i].'"'.$check.' />'.$user;
+            if ($user ne $dcname.':'.$dcdom) {
+                $table .=  ' ('.$dcname.':'.$dcdom.')'.
+                           '</label></span></td>';
             }
-            my ($dcname,$dcdom) = split(':',$dcs[$i]);
-            $datatable .= '<span class="LC_nobreak"><label>'.
-                          '<input type="radio" name="autocreate_xmldc"'.
-                          ' value="'.$dcs[$i].'"'.$check.'/>'.
-                          &Apache::loncommon::plainname($dcname,$dcdom).
-                          '</label></span></td>';
         }
-        $datatable .= '</tr></table>';
-    } elsif (@dcs) {
-        $datatable .= '<input type="hidden" name="autocreate_dc" value="'.
-                      $dcs[0].'" />';
+        $table .= '</tr></table>';
+    } elsif ($numdcs == 1) {
+        if ($inputtype eq 'radio') {
+            $table .= '<input type="hidden" name="'.$name.'" value="'.$domcoord[0].'" />';
+        } else {
+            my $check;
+            if (exists($currhash{$domcoord[0]})) {
+                $check = ' checked="checked"';
+            }
+            $table .= '<input type="checkbox" name="'.$name.'" '.
+                      'value="'.$domcoord[0].'"'.$check.' />';
+            $rows ++;
+        }
     }
-    return ($numdcs,$datatable);
+    return ($numdcs,$table,$rows);
 }
 
 sub usersession_titles {
     return &Apache::lonlocal::texthash(
                hosted => 'Hosting of sessions for users from other domains on servers in this domain',
-
                remote => 'Hosting of sessions for users in this domain on servers in other domains',
+               spares => 'Servers offloaded to, when busy',
                version => 'LON-CAPA version requirement',
                excludedomain => 'Allow all, but exclude specific domains',
                includedomain => 'Deny all, but include specific domains',
+               primary => 'Primary (checked first)',
+               default => 'Default',
            );
 }
 
+sub id_for_thisdom {
+    my (%servers) = @_;
+    my %altids;
+    foreach my $server (keys(%servers)) {
+        my $serverhome = &Apache::lonnet::get_server_homeID($servers{$server});
+        if ($serverhome ne $server) {
+            $altids{$serverhome} = $server;
+        }
+    }
+    return %altids;
+}
+
+sub count_servers {
+    my ($currbalancer,%servers) = @_;
+    my (@spares,$numspares);
+    foreach my $lonhost (sort(keys(%servers))) {
+        next if ($currbalancer eq $lonhost);
+        push(@spares,$lonhost);
+    }
+    if ($currbalancer) {
+        $numspares = scalar(@spares);
+    } else {
+        $numspares = scalar(@spares) - 1;
+    }
+    return ($numspares,@spares);
+}
+
+sub lonbalance_targets_js {
+    my ($dom,$types,$servers,$settings) = @_;
+    my $select = &mt('Select');
+    my ($alltargets,$allishome,$allinsttypes,@alltypes);
+    if (ref($servers) eq 'HASH') {
+        $alltargets = join("','",sort(keys(%{$servers})));
+        my @homedoms;
+        foreach my $server (sort(keys(%{$servers}))) {
+            if (&Apache::lonnet::host_domain($server) eq $dom) {
+                push(@homedoms,'1');
+            } else {
+                push(@homedoms,'0');
+            }
+        }
+        $allishome = join("','",@homedoms);
+    }
+    if (ref($types) eq 'ARRAY') {
+        if (@{$types} > 0) {
+            @alltypes = @{$types};
+        }
+    }
+    push(@alltypes,'default','_LC_adv','_LC_author','_LC_internetdom','_LC_external');
+    $allinsttypes = join("','",@alltypes);
+    my (%currbalancer,%currtargets,%currrules,%existing);
+    if (ref($settings) eq 'HASH') {
+        %existing = %{$settings};
+    }
+    &get_loadbalancers_config($servers,\%existing,\%currbalancer,
+                              \%currtargets,\%currrules);
+    my $balancers = join("','",sort(keys(%currbalancer))); 
+    return <<"END";
+
+<script type="text/javascript">
+// <![CDATA[
+
+currBalancers = new Array('$balancers');
+
+function toggleTargets(balnum) {
+    var lonhostitem = document.getElementById('loadbalancing_lonhost_'+balnum);
+    var prevhostitem = document.getElementById('loadbalancing_prevlonhost_'+balnum);
+    var balancer = lonhostitem.options[lonhostitem.selectedIndex].value;
+    var prevbalancer = prevhostitem.value;
+    var baltotal = document.getElementById('loadbalancing_total').value;
+    prevhostitem.value = balancer;
+    if (prevbalancer != '') {
+        var prevIdx = currBalancers.indexOf(prevbalancer);
+        if (prevIdx != -1) {
+            currBalancers.splice(prevIdx,1);
+        }
+    }
+    if (balancer == '') {
+        hideSpares(balnum);
+    } else {
+        var currIdx = currBalancers.indexOf(balancer);
+        if (currIdx == -1) {
+            currBalancers.push(balancer);
+        }
+        var homedoms = new Array('$allishome');
+        var ishomedom = homedoms[lonhostitem.selectedIndex];
+        showSpares(balancer,ishomedom,balnum);
+    }
+    balancerChange(balnum,baltotal,'change',prevbalancer,balancer);
+    return;
+}
+
+function showSpares(balancer,ishomedom,balnum) {
+    var alltargets = new Array('$alltargets');
+    var insttypes = new Array('$allinsttypes');
+    var offloadtypes = new Array('primary','default');
+
+    document.getElementById('loadbalancing_targets_'+balnum).style.display='block';
+    document.getElementById('loadbalancing_disabled_'+balnum).style.display='none';
+ 
+    for (var i=0; i<offloadtypes.length; i++) {
+        var count = 0;
+        for (var j=0; j<alltargets.length; j++) {
+            if (alltargets[j] != balancer) {
+                var item = document.getElementById('loadbalancing_target_'+balnum+'_'+offloadtypes[i]+'_'+count);
+                item.value = alltargets[j];
+                item.style.textAlign='left';
+                item.style.textFace='normal';
+                document.getElementById('loadbalancing_targettxt_'+balnum+'_'+offloadtypes[i]+'_'+count).innerHTML = alltargets[j];
+                if (currBalancers.indexOf(alltargets[j]) == -1) {
+                    item.disabled = '';
+                } else {
+                    item.disabled = 'disabled';
+                    item.checked = false;
+                }
+                count ++;
+            }
+        }
+    }
+    for (var k=0; k<insttypes.length; k++) {
+        if ((insttypes[k] == '_LC_external') || (insttypes[k] == '_LC_internetdom')) {
+            if (ishomedom == 1) {
+                document.getElementById('balanceruletitle_'+balnum+'_'+insttypes[k]).style.display='block';
+                document.getElementById('balancerule_'+balnum+'_'+insttypes[k]).style.display='block';
+            } else {
+                document.getElementById('balanceruletitle_'+balnum+'_'+insttypes[k]).style.display='none';
+                document.getElementById('balancerule_'+balnum+'_'+insttypes[k]).style.display='none';
+
+            }
+        } else {
+            document.getElementById('balanceruletitle_'+balnum+'_'+insttypes[k]).style.display='block';
+            document.getElementById('balancerule_'+balnum+'_'+insttypes[k]).style.display='block';
+        }
+        if ((insttypes[k] != '_LC_external') && 
+            ((insttypes[k] != '_LC_internetdom') ||
+             ((insttypes[k] == '_LC_internetdom') && (ishomedom == 1)))) {
+            var item = document.getElementById('loadbalancing_singleserver_'+balnum+'_'+insttypes[k]);
+            item.options.length = 0;
+            item.options[0] = new Option("","",true,true);
+            var idx = 0;  
+            for (var m=0; m<alltargets.length; m++) {
+                if ((currBalancers.indexOf(alltargets[m]) == -1) && (alltargets[m] != balancer)) {
+                    idx ++;
+                    item.options[idx] = new Option(alltargets[m],alltargets[m],false,false);
+                    
+                }
+            }
+        }
+    }
+    return;
+}
+
+function hideSpares(balnum) {
+    var alltargets = new Array('$alltargets');
+    var insttypes = new Array('$allinsttypes');
+    var offloadtypes = new Array('primary','default');
+
+    document.getElementById('loadbalancing_targets_'+balnum).style.display='none';
+    document.getElementById('loadbalancing_disabled_'+balnum).style.display='block';
+
+    var total = alltargets.length - 1;
+    for (var i=0; i<offloadtypes; i++) {
+        for (var j=0; j<total; j++) {
+           document.getElementById('loadbalancing_target_'+balnum+'_'+offloadtypes[i]+'_'+j).checked = false;
+           document.getElementById('loadbalancing_target_'+balnum+'_'+offloadtypes[i]+'_'+j).value = '';
+           document.getElementById('loadbalancing_targettxt_'+balnum+'_'+offloadtypes[i]+'_'+j).innerHTML = '';
+        }
+    }
+    for (var k=0; k<insttypes.length; k++) {
+        document.getElementById('balanceruletitle_'+balnum+'_'+insttypes[k]).style.display='none';
+        document.getElementById('balancerule_'+balnum+'_'+insttypes[k]).style.display='none';
+        if (insttypes[k] != '_LC_external') {
+            document.getElementById('loadbalancing_singleserver_'+balnum+'_'+insttypes[k]).length = 0;
+            document.getElementById('loadbalancing_singleserver_'+balnum+'_'+insttypes[k]).options[0] = new Option("","",true,true);
+        }
+    }
+    return;
+}
+
+function checkOffloads(item,balnum,type) {
+    var alltargets = new Array('$alltargets');
+    var offloadtypes = new Array('primary','default');
+    if (item.checked) {
+        var total = alltargets.length - 1;
+        var other;
+        if (type == offloadtypes[0]) {
+            other = offloadtypes[1];
+        } else {
+            other = offloadtypes[0];
+        }
+        for (var i=0; i<total; i++) {
+            var server = document.getElementById('loadbalancing_target_'+balnum+'_'+other+'_'+i).value;
+            if (server == item.value) {
+                if (document.getElementById('loadbalancing_target_'+balnum+'_'+other+'_'+i).checked) {
+                    document.getElementById('loadbalancing_target_'+balnum+'_'+other+'_'+i).checked = false;
+                }
+            }
+        }
+    }
+    return;
+}
+
+function singleServerToggle(balnum,type) {
+    var offloadtoSelIdx = document.getElementById('loadbalancing_singleserver_'+balnum+'_'+type).selectedIndex;
+    if (offloadtoSelIdx == 0) {
+        document.getElementById('loadbalancing_rules_'+balnum+'_'+type+'_0').checked = true;
+        document.getElementById('loadbalancing_singleserver_'+balnum+'_'+type).options[0].text = '';
+
+    } else {
+        document.getElementById('loadbalancing_rules_'+balnum+'_'+type+'_2').checked = true;
+        document.getElementById('loadbalancing_singleserver_'+balnum+'_'+type).options[0].text = '$select';
+    }
+    return;
+}
+
+function balanceruleChange(formname,balnum,type) {
+    if (type == '_LC_external') {
+        return;
+    }
+    var typesRules = getIndicesByName(formname,'loadbalancing_rules_'+balnum+'_'+type);
+    for (var i=0; i<typesRules.length; i++) {
+        if (formname.elements[typesRules[i]].checked) {
+            if (formname.elements[typesRules[i]].value != 'specific') {
+                document.getElementById('loadbalancing_singleserver_'+balnum+'_'+type).selectedIndex = 0;
+                document.getElementById('loadbalancing_singleserver_'+balnum+'_'+type).options[0].text = '';
+            } else {
+                document.getElementById('loadbalancing_singleserver_'+balnum+'_'+type).options[0].text = '$select';
+            }
+        }
+    }
+    return;
+}
+
+function balancerDeleteChange(balnum) {
+    var hostitem = document.getElementById('loadbalancing_lonhost_'+balnum);
+    var baltotal = document.getElementById('loadbalancing_total').value;
+    var addtarget;
+    var removetarget;
+    var action = 'delete';
+    if (document.getElementById('loadbalancing_delete_'+balnum)) {
+        var lonhost = hostitem.value;
+        var currIdx = currBalancers.indexOf(lonhost);
+        if (document.getElementById('loadbalancing_delete_'+balnum).checked) {
+            if (currIdx != -1) {
+                currBalancers.splice(currIdx,1);
+            }
+            addtarget = lonhost;
+        } else {
+            if (currIdx == -1) {
+                currBalancers.push(lonhost);
+            }
+            removetarget = lonhost;
+            action = 'undelete';
+        }
+        balancerChange(balnum,baltotal,action,addtarget,removetarget);
+    }
+    return;
+}
+
+function balancerChange(balnum,baltotal,action,addtarget,removetarget) {
+    if (baltotal > 1) {
+        var offloadtypes = new Array('primary','default');
+        var alltargets = new Array('$alltargets');
+        var insttypes = new Array('$allinsttypes');
+        for (var i=0; i<baltotal; i++) {
+            if (i != balnum) {
+                for (var j=0; j<offloadtypes.length; j++) {
+                    var total = alltargets.length - 1;
+                    for (var k=0; k<total; k++) {
+                        var serveritem = document.getElementById('loadbalancing_target_'+i+'_'+offloadtypes[j]+'_'+k);
+                        var server = serveritem.value;
+                        if ((action == 'delete') || (action == 'change' && addtarget != ''))  {
+                            if (server == addtarget) {
+                                serveritem.disabled = '';
+                            }
+                        }
+                        if ((action == 'undelete') || (action == 'change' && removetarget != '')) {
+                            if (server == removetarget) {
+                                serveritem.disabled = 'disabled';
+                                serveritem.checked = false;
+                            }
+                        }
+                    }
+                }
+                for (var j=0; j<insttypes.length; j++) {
+                    if (insttypes[j] != '_LC_external') {
+                        if (document.getElementById('loadbalancing_singleserver_'+i+'_'+insttypes[j])) {
+                            var singleserver = document.getElementById('loadbalancing_singleserver_'+i+'_'+insttypes[j]);
+                            var currSel = singleserver.selectedIndex;
+                            var currVal = singleserver.options[currSel].value;
+                            if ((action == 'delete') || (action == 'change' && addtarget != '')) {
+                                var numoptions = singleserver.options.length;
+                                var needsnew = 1;
+                                for (var k=0; k<numoptions; k++) {
+                                    if (singleserver.options[k] == addtarget) {
+                                        needsnew = 0;
+                                        break;
+                                    }
+                                }
+                                if (needsnew == 1) {
+                                    singleserver.options[numoptions] = new Option(addtarget,addtarget,false,false);
+                                }
+                            }
+                            if ((action == 'undelete') || (action == 'change' && removetarget != '')) {
+                                singleserver.options.length = 0;
+                                if ((currVal) && (currVal != removetarget)) {
+                                    singleserver.options[0] = new Option("","",false,false);
+                                } else {
+                                    singleserver.options[0] = new Option("","",true,true);
+                                }
+                                var idx = 0;
+                                for (var m=0; m<alltargets.length; m++) {
+                                    if (currBalancers.indexOf(alltargets[m]) == -1) {
+                                        idx ++;
+                                        if (currVal == alltargets[m]) {
+                                            singleserver.options[idx] = new Option(alltargets[m],alltargets[m],true,true);
+                                        } else {
+                                            singleserver.options[idx] = new Option(alltargets[m],alltargets[m],false,false);
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+    return;
+}
+
+// ]]>
+</script>
+
+END
+}
+
+sub new_spares_js {
+    my @sparestypes = ('primary','default');
+    my $types = join("','",@sparestypes);
+    my $select = &mt('Select');
+    return <<"END";
+
+<script type="text/javascript">
+// <![CDATA[
+
+function updateNewSpares(formname,lonhost) {
+    var types = new Array('$types');
+    var include = new Array();
+    var exclude = new Array();
+    for (var i=0; i<types.length; i++) {
+        var spareboxes = getIndicesByName(formname,'spare_'+types[i]+'_'+lonhost);
+        for (var j=0; j<spareboxes.length; j++) {
+            if (formname.elements[spareboxes[j]].checked) {
+                exclude.push(formname.elements[spareboxes[j]].value);
+            } else {
+                include.push(formname.elements[spareboxes[j]].value);
+            }
+        }
+    }
+    for (var i=0; i<types.length; i++) {
+        var newSpare = document.getElementById('newspare_'+types[i]+'_'+lonhost);
+        var selIdx = newSpare.selectedIndex;
+        var currnew = newSpare.options[selIdx].value;
+        var okSpares = new Array();
+        for (var j=0; j<newSpare.options.length; j++) {
+            var possible = newSpare.options[j].value;
+            if (possible != '') {
+                if (exclude.indexOf(possible) == -1) {
+                    okSpares.push(possible);
+                } else {
+                    if (currnew == possible) {
+                        selIdx = 0;
+                    }
+                }
+            }
+        }
+        for (var k=0; k<include.length; k++) {
+            if (okSpares.indexOf(include[k]) == -1) {
+                okSpares.push(include[k]);
+            }
+        }
+        okSpares.sort();
+        newSpare.options.length = 0;
+        if (selIdx == 0) {
+            newSpare.options[0] = new Option("$select","",true,true);
+        } else {
+            newSpare.options[0] = new Option("$select","",false,false);
+        }
+        for (var m=0; m<okSpares.length; m++) {
+            var idx = m+1;
+            var selThis = 0;
+            if (selIdx != 0) {
+                if (okSpares[m] == currnew) {
+                    selThis = 1;
+                }
+            }
+            if (selThis == 1) {
+                newSpare.options[idx] = new Option(okSpares[m],okSpares[m],true,true);
+            } else {
+                newSpare.options[idx] = new Option(okSpares[m],okSpares[m],false,false);
+            }
+        }
+    }
+    return;
+}
+
+function checkNewSpares(lonhost,type) {
+    var newSpare = document.getElementById('newspare_'+type+'_'+lonhost);
+    var chosen =  newSpare.options[newSpare.selectedIndex].value;
+    if (chosen != '') { 
+        var othertype;
+        var othernewSpare;
+        if (type == 'primary') {
+            othernewSpare = document.getElementById('newspare_default_'+lonhost);
+        }
+        if (type == 'default') {
+            othernewSpare = document.getElementById('newspare_primary_'+lonhost);
+        }
+        if (othernewSpare.options[othernewSpare.selectedIndex].value == chosen) {
+            othernewSpare.selectedIndex = 0;
+        }
+    }
+    return;
+}
+
+// ]]>
+</script>
+
+END
+
+}
+
+sub common_domprefs_js {
+    return <<"END";
+
+<script type="text/javascript">
+// <![CDATA[
+
+function getIndicesByName(formname,item) {
+    var group = new Array();
+    for (var i=0;i<formname.elements.length;i++) {
+        if (formname.elements[i].name == item) {
+            group.push(formname.elements[i].id);
+        }
+    }
+    return group;
+}
+
+// ]]>
+</script>
+
+END
+
+}
+
+sub recaptcha_js {
+    my %lt = &captcha_phrases();
+    return <<"END";
+
+<script type="text/javascript">
+// <![CDATA[
+
+function updateCaptcha(caller,context) {
+    var privitem;
+    var pubitem;
+    var privtext;
+    var pubtext;
+    if (document.getElementById(context+'_recaptchapub')) {
+        pubitem = document.getElementById(context+'_recaptchapub');
+    } else {
+        return;
+    }
+    if (document.getElementById(context+'_recaptchapriv')) {
+        privitem = document.getElementById(context+'_recaptchapriv');
+    } else {
+        return;
+    }
+    if (document.getElementById(context+'_recaptchapubtxt')) {
+        pubtext = document.getElementById(context+'_recaptchapubtxt');
+    } else {
+        return;
+    }
+    if (document.getElementById(context+'_recaptchaprivtxt')) {
+        privtext = document.getElementById(context+'_recaptchaprivtxt');
+    } else {
+        return;
+    }
+    if (caller.checked) {
+        if (caller.value == 'recaptcha') {
+            pubitem.type = 'text';
+            privitem.type = 'text';
+            pubitem.size = '40';
+            privitem.size = '40';
+            pubtext.innerHTML = "$lt{'pub'}";
+            privtext.innerHTML = "$lt{'priv'}";
+        } else {
+            pubitem.type = 'hidden';
+            privitem.type = 'hidden';
+            pubtext.innerHTML = '';
+            privtext.innerHTML = '';
+        }
+    }
+    return;
+}
+
+// ]]>
+</script>
+
+END
+
+}
+
+sub credits_js {
+    return <<"END";
+
+<script type="text/javascript">
+// <![CDATA[
+
+function toggleCredits(domForm) {
+    if (document.getElementById('credits')) {
+        creditsitem = document.getElementById('credits');
+        var creditsLength = domForm.coursecredits.length;
+        if (creditsLength) {
+            var currval;
+            for (var i=0; i<creditsLength; i++) {
+                if (domForm.coursecredits[i].checked) {
+                   currval = domForm.coursecredits[i].value;
+                }
+            }
+            if (currval == 1) {
+                creditsitem.style.display = 'block';
+            } else {
+                creditsitem.style.display = 'none';
+            }
+        }
+    }
+    return;
+}
+
+// ]]>
+</script>
+
+END
+
+}
+
+sub captcha_phrases {
+    return &Apache::lonlocal::texthash (
+                 priv => 'Private key',
+                 pub  => 'Public key',
+                 original  => 'original (CAPTCHA)',
+                 recaptcha => 'successor (ReCAPTCHA)',
+                 notused   => 'unused',
+    );
+}
+
 1;