+% }
+% else { # currently only multiple sectors, not towers
+<& /elements/select-table.html,
+ table => 'tower',
+ name_col => 'towername',
+ hashref => { 'disabled' => '', },
+ id => 'towernum',
+ field => 'towernum',
+ onchange => 'change_towernum(this.value);',
+ element_etc => 'STYLE="vertical-align:top"',
+&>
+<SELECT NAME="sectornum" ID="sectornum" MULTIPLE SIZE="6"></SELECT>
+<SCRIPT TYPE="text/javascript">
+var sectors_of = <% encode_json(\%sectors_of) %>;
+var select_sectornum = document.getElementById('sectornum');
+function change_towernum(towernum) {
+ select_sectornum.options.length = 0;
+ for (var sectornum in sectors_of[towernum]) {
+ var o = document.createElement('OPTION');
+ o.value = sectornum;
+ o.text = sectors_of[towernum][sectornum];
+ o.selected = true;
+ select_sectornum.add(o, null);
+ }
+ return;
+}
+change_towernum('');
+</SCRIPT>
+<BR>
+<INPUT TYPE="checkbox" VALUE="none" NAME="sectornum" CHECKED> <% $empty_label %>
+% }
+<%init>
+my %opt = @_;
+
+my %sectors_of;
+my %default_of;
+if ( $opt{'multiple'} ) {
+ foreach my $sector ( qsearch('tower_sector',{}) ) {
+ $sectors_of{$sector->towernum} ||= {};
+ $sectors_of{$sector->towernum}->{$sector->sectornum} = $sector->sectorname;
+ $sectors_of{''}->{$sector->sectornum} = $sector->description;
+ $default_of{$sector->towernum} = $sector->sectornum
+ if $sector->sectorname eq '_default';
+ }
+}
+foreach my $towernum (keys %sectors_of) {
+ # hide default sectors for towers that have real sectors defined
+ my $sectornum = $default_of{$towernum};
+ if ( keys %{ $sectors_of{$towernum} } > 1 ) {
+ delete $sectors_of{$towernum}->{$sectornum};
+ delete $sectors_of{''}->{$sectornum};
+ }
+ else {
+ # show default sectorname as '(all)'
+ $sectors_of{$towernum}->{$sectornum} = '(all)'
+ }
+}
+
+my $empty_label = $opt{'empty_label'} || 'Include services with no sector';
+
+my $extra_sql = q(WHERE (disabled = '' OR disabled IS NULL));
+$extra_sql .= q( AND sectorname != '_default') if $opt{'sectorsonly'};
+</%init>