#!/usr/bin/perl

# before anything else, the script needs to find out its own name
#
# some servers (notably IIS on windows) don't set the cwd to the script's
# directory before executing it.  So we get that information
# from $0 (the full name & path of the script).
BEGIN{($_=$0)=~s![\\/][^\\/]+$!!;push@INC,$_}

$name = $0;
$name =~ s/.+\/?.+\///;  # for unix
$name =~ s/.+\\.+\\//;  # for windows
$path = $0;
$path =~ s/(.+\/).+/$1/g;  # for unix
$path =~ s/(.+\\).+/$1/g;  # for windows

# The "use Cwd" method would be nice, but it doesn't work with 
# some versions of IIS/ActivePerl
#use Cwd;
#$path = cwd;

if ($path ne "")
{
  chdir $path;
  push @INC,$path;
}
# finished discovering name


# some global variables (more further down)
local $plans_version = "6.6.3";        # version
local $debug_info;
local %options;
local $perl_version = (sprintf ("%vd",$^V));
local $options{data_storage_mode};
local $fatal_error = 0;          # fatal errors cause plans to abort and print an error message to the browser
local $error_info = "";        
local $html_output;
local $event_details_template;

local %calendars;
local %current_calendar;
local %latest_calendar;
local %latest_new_calendar;
local $max_cal_id = 0;
local $max_new_cal_id = 0;
local $max_series_id = 0;

local %events;
local %current_event;
local %latest_event;
local $max_event_id = 0;
local %text;

local $max_remote_event_id = 0;


local $options{default_template_path} = "";
local $theme_url = "";
local $options{choose_themes} = "";
local $graphics_url = "";
local $icons_url = "";
local $input_cal_id_valid = 0;
local $options{right_click_menus_enabled} = 0;
local %cal_options;

local $rightnow;
local @months;
local @months_abv;
local @day_names;
local $loaded_all_events;    # flag used to avoid calling load_events("all") twice
                             # not needed for calendars (we always load all calendars)


# check for required modules.

my $module_found=0;
foreach $temp_path (@INC)
{
  if (-e "$temp_path/plans_config.pl")
    {$module_found=1;}
}
if ($module_found == 0)
{
  $fatal_error=1;
  $error_info .= "Unable to locate <b>plans_config.pl</b>!  It should be in the same directory as plans.cgi!\n";
}
else {require "plans_config.pl";}



$module_found=0;
foreach $temp_path (@INC)
{
  if (-e "$temp_path/CGI")
    {$module_found=1;}
}

if ($module_found == 0)
{
  $fatal_error=1;
  $error_info .= "unable to locate required module <b>CGI</b>!\n";
}
else
  {use CGI;}


$module_found=0;
foreach $temp_path (@INC)
{
  if (-e "$temp_path/CGI/Carp.pm")
    {$module_found=1;}
}

if ($module_found == 0)
{
  $fatal_error=1;
  $error_info .= "unable to locate required module <b>CGI::Carp</b>!\n";
}
else
  {use CGI::Carp qw/fatalsToBrowser/;}

$module_found=0;
foreach $temp_path (@INC)
{
  if (-e "$temp_path/Time")
    {$module_found=1;}
}

if ($module_found == 0)
{
  $fatal_error=1;
  $error_info .= "unable to locate required module <b>Time.pm</b>!\n";
}
else
  {use Time::Local;}

$module_found=0;
foreach $temp_path (@INC)
{
  if (-e "$temp_path/IO.pm")
    {$module_found=1;}
}
if ($module_found == 0)
{
  $fatal_error=1;
  $error_info .= "unable to locate required module <b>IO.pm</b>!\n";
}
else
  {use IO::Socket;}

if ($fatal_error == 1)  # print error and bail out
{
  &fatal_error();
}


$module_found=0;
foreach $temp_path (@INC)
{
  if (-r "$temp_path/plans_lib.pl")
    {$module_found=1;}
}
if ($module_found == 0)
{
  $fatal_error=1;
  $error_info .= "Unable to locate <b>plans_lib.pl</b>!  It should be in the same directory as plans.cgi!\n";
}
else {require "plans_lib.pl";}

# get the language file, if one is defined

if (defined $options{language_files})
{
  my @language_files = split(',', $options{language_files});

  foreach $language_file (@language_files)
  {

    $module_found=0;
    foreach $temp_path (@INC)
    {
      if (-r "$temp_path/$language_file")
        {$module_found=1;}
    }
    if ($module_found == 0)
    {
      $fatal_error=1;
      $error_info .= "Unable to locate language file <b>$language_file</b>!  It should be in the same directory as plans.cgi!\n";
    }
    else {require $language_file;}
  }
}
else
{
  $fatal_error=1;
  $error_info .= "No language files defined in plans.config!\n";
}

# check for perl version
my $temp = substr($perl_version,0,3);
if ($temp < 5.6) {
  $fatal_error=1;
  $error_info .= "Your version of perl ($perl_version) is too old!  Plans requires perl version 5.6 or better.\n";
}

if ($fatal_error == 1)  # print error and bail out
{
  &fatal_error();
}


# init cgi stuff
$q = new CGI;
$script_url = $q->url(-path_info>=1);
$script_url =~ /(.*)\//;          # remove trailing / and all text after
$script_url = $1;                 # remove trailing / and all text after

# check if data files or tables are present
&check_data();                         

# fatal error?  Print error and bail out
if ($fatal_error == 1)                  
  {&fatal_error();}

if ($options{choose_themes})
{
  $theme_url=$q->param('theme_url');
  $theme_url=$theme_url;
} 

if ($theme_url eq "")
  {$theme_url = "$script_url/theme";}

$graphics_url ="$theme_url/graphics";                      # where misc. graphics are 
$icons_url = "$theme_url/icons";                           # where icons are
$css_path = "$theme_url/plans.css";                         # css file



# globals for http parameters
my $active_tab = $q->param('active_tab');
my $add_edit_cal_action = $q->param('add_edit_cal_action');
my $add_edit_event = $q->param('add_edit_event');
local $current_event_id = $q->param('evt_id');

local $cal_num_months = $q->param('cal_num_months');
local $cal_start_month = $q->param('cal_start_month');
local $cal_start_year = $q->param('cal_start_year');

my $special_action = $q->param('special_action');
local $display_type = $q->param('display_type');
$display_type = 0 if ($display_type eq "");


# other globals
my $event_start_date;
my $event_start_timestamp;
my $event_days;
my $start_mday;
my $start_mon;
my $start_year;
my @timestamp_array;
my $recur_end_timestamp;

# load calendar data
&load_calendars();

local $current_cal_id = $q->param('cal_id');

# if calendar id not supplied, but evt_id is supplied (like when viewing an event) use that event's calendar as the current calendar
#if ($current_event_id ne "")
#{
#  &load_event($current_event_id);
#  
#  my %temp_current_event = %{$events{$current_event_id}};
#  if ($current_cal_id eq "")
#  {
#    $current_cal_id = $temp_current_event{cal_ids}[0];
#  }
#}

foreach $cal_id (keys %calendars)
{
  if ($cal_id eq $current_cal_id)
    {$input_cal_id_valid = 1;}
}
    
if ($current_cal_id eq "")
  {$input_cal_id_valid = 0;}
  
if ($current_cal_id =~ /\D/)
  {$input_cal_id_valid = 0;}
  
$current_cal_id = 0 if ($current_event_id eq "" &&  !$input_cal_id_valid);

# make all calendars selectable by default
foreach $cal_id (keys %calendars)
  {$default_cal{selectable_calendars}{$cal_id} = 1;}

%current_calendar = %{$calendars{$current_cal_id}};

# time-related globals
$rightnow = time() + 3600 * $current_calendar{gmtime_diff};
@rightnow_array = gmtime $rightnow;
$rightnow_year = $rightnow_array[5]+1900;
$rightnow_month = $rightnow_array[4];
$rightnow_mday = $rightnow_array[3];
$next_year = $rightnow_year+1;
$rightnow_description = formatted_time($rightnow, "hh:mm:ss mn md yy");

@weekday_sequence = @day_names;

# custom stylesheet?
if ($current_calendar{custom_stylesheet} ne "")
{
  $css_path = "http://$current_calendar{custom_stylesheet}";
}

# if this is a custom calendar request, shoehorn the request parameters in
if ($q->param('custom_calendar') == 1)
{
  $current_cal_id = $q->param('custom_calendar_calendar');
  @custom_calendar_backgound_calendars = $q->param('custom_calendar_background_calendars');
  
  foreach $local_background_calendar (keys %{$calendars{$current_cal_id}{local_background_calendars}})
    {delete $calendars{$current_cal_id}{local_background_calendars}{$local_background_calendar};}
    
  foreach $local_background_calendar (@custom_calendar_backgound_calendars)
    {$calendars{$current_cal_id}{local_background_calendars}{$local_background_calendar} = 1;}
  
  %current_calendar = %{$calendars{$current_cal_id}};
}



# make sure we can select the current calendar
#$current_calendar{selectable_calendars}{$current_cal_id} = 1;


# set info window height & width
$current_calendar{info_window_size} ="400x400" if ($current_calendar{info_window_size} eq ""); # default
my ($info_window_width, $info_window_height) = split("x", $current_calendar{info_window_size});


# rotate weekday_sequence by the offset defined in the week start day.
for ($l1=0;$l1 < $current_calendar{week_start_day};$l1++)
  {push @weekday_sequence, (shift @weekday_sequence);}



# load background_colors
my @temp_lines = split ("\n", $event_background_colors);

foreach $temp_line (@temp_lines)
{
  if ($temp_line !~ /\w/) # skip any blank lines
    {next;}
    
  $temp_line =~ s/^\s+//;   
  my ($hex_color, $hex_color_title) = split (/,*\s+/, $temp_line, 2);
  if ($hex_color_title eq "")
    {$hex_color_title = "&nbsp;";}
    
  push @event_bgcolors, {color => $hex_color, title => $hex_color_title};
}

my $template_html;



#load template
my $custom_template_file_found=1;
my $local_template_file = 0; # tells whether the template was loaded via a filesystem open or through a http request.

if ($current_calendar{custom_template} ne "")  # custom template
{
  $template_html = &get_remote_file("$current_calendar{custom_template}");

  if ($template_html !~ /###/)
  {
    $custom_template_file_found=0;
    $lang{custom_template_fail} =~ s/###template###/$current_calendar{custom_template}/;
    $debug_info .= "$lang{custom_template_fail}\n";
  }
}


if ($current_calendar{custom_template} eq "" || $custom_template_file_found ==0)
{
  if (!(-e "$options{default_template_path}"))
  {
    $fatal_error=1;
    $lang{default_template_fail} =~ s/###template###/$options{default_template_path}/;
    $error_info .= "$lang{default_template_fail}\n";
    &fatal_error();
  }
  else
  {
    open (FH, "$options{default_template_path}") || ($debug_info .="<br/>Unable to open default template file $options{default_template_path} for reading<br/>");
    flock FH,2;
    @template_lines=<FH>;
    close FH;
    $template_html = join "", @template_lines;
    $local_template_file = 1;
  }
}

# separate the main calendar template and the event details template
$event_details_template = $template_html;
$list_item_template = $template_html;
$template_html =~ s/<\/html>.+/<\/html>/s;
$template_html =~ s/<event_details>.+<\/event_details>//s;
$template_html =~ s/<event_list_item>.+<\/event_list_item>//s;

if ($event_details_template =~ /<event_details>/ && $event_details_template =~ /<\/event_details>/)
{
  $event_details_template =~ s/.*<event_details>//s;
  $event_details_template =~ s/<\/event_details>.+//s;
}
else
{
  $debug_info .= "Warning!  No event details template found.  (The template file doesn't contain &lt;event_details&gt;...&lt;/event_details&gt;\n";
  $event_details_template = "";
}

if ($list_item_template =~ /<event_list_item>/ && $list_item_template =~ /<\/event_list_item>/)
{
  $list_item_template =~ s/.*<event_list_item>//s;
  $list_item_template =~ s/<\/event_list_item>.+//s;
}
else
{
  $debug_info .= "Warning!  No event event list item template found.  (The template file doesn't contain &lt;event_list_item&gt;...&lt;/event_list_item&gt;\n";
  $event_details_template = "";
}



# ssi-style includes in the template
if ($local_template_file)
{
  my $new_html = $template_html;
  
  $template_html =~ s/###include\s+(.+)###/&load_file($1)/ge;
  
  #while ($new_html =~ s/###include\s+(.+)###//g)
  if(0)
  {
    my $include_file=$1;
    if (-e $include_file)
    {
      open (FH, "$include_file") || ($debug_info .="<br/>unable to open include file $include_file for reading<br/>");
      flock FH,2;
      my @include_lines=<FH>;
      close FH;
      $include_html = join "", @include_lines;
    }
    $template_html =~ s/###include\s+(.+)###/$include_html/;
  }
}

sub load_file()
{
  my ($file)=@_;
  if (-e $file)
  {
    open (FH, "$file") || (return "unable to open include file $file for reading");
    flock FH,2;
    my @lines=<FH>;
    close FH;
    $text = join "", @lines;
    return $text;
  }
  else
  {
    return "file $file does not exist";
  }
}



if($options{choose_themes})
{
  my $theme_file="choose_theme.html";
  my $theme_html="";
  if (-e $theme_file)
  {
    open (FH, "$theme_file") || ($debug_info .="<br/>unable to open theme file $theme_file for reading<br/>");
    flock FH,2;
    my @theme_lines=<FH>;
    close FH;
    $theme_html = join "", @theme_lines;
  }
  $template_html =~ s/###choose theme###/$theme_html/;
}
else
{
  $template_html =~ s/###choose theme###//;
}

                            

#evaluate browser type and version
$_ = $ENV{HTTP_USER_AGENT};

if (/Mozilla/) {
  if (/Opera.([0-9\.]+)/) { $browser_type = 'Opera'; $browser_version=$1;}
  elsif (/MSIE.([0-9.]+)/) { $browser_type = 'IE'; $browser_version = $1;}
  elsif (/Mozilla\/([0-9\.]+)/) {$browser_type = 'Mozilla'; $browser_version=$1;
    if (($browser_version<5) || (/Netscape/)) {$browser_type = "Netscape";} }
  if (/\)[^0-9.]+[0-9]*[\/\ ]([0-9.]+)/) {$browser_version=$1;}
} elsif (/(\w+)\/([0-9\.]+)/) {$browser_type = $1; $browser_version = $2}

#evaluate, transform, tweak, adjust, modify input values
#$debug_info .= "browser type: $browser_type<br/>";


#if the input is greater than the number of tabs, things look goofy
if ($q->param('active_tab') >= scalar @tab_text || $q->param('active_tab') eq "")
{
  $active_tab = 0;
}

#if no month is selected, use the current month
if ($cal_start_month eq "")
{
  $cal_start_month = $rightnow_month;
  #$cal_start_month = 2;
}

#if the input year is out of range use the current year
if (($cal_start_year+0) < 1902 || ($cal_start_year+0)> 2037)
{
  $cal_start_year = $rightnow_year;
}

if ($cal_num_months eq "" || $cal_num_months > $current_calendar{max_number_of_months})
{
  $cal_num_months = "$current_calendar{default_number_of_months}";
}

if ($cal_num_months eq "" || $cal_num_months > $current_calendar{max_number_of_months})
{
  $cal_num_months = 1;
}

#calculate calendar end month and year
$cal_end_month = $cal_start_month;
$cal_end_year = $cal_start_year;
for ($l1=1;$l1<$cal_num_months;$l1++)
{
  $cal_end_month++;
  if ($cal_end_month == 12)
  {
    $cal_end_month=0;
    $cal_end_year++;
  }
}

#check to make sure num_months+cal_start_date doesn't go out of bounds
if ($cal_end_year < 1902 || $cal_end_year> 2037)
{
  $cal_end_year = $cal_start_year;
  $cal_end_month = $cal_start_month;
  $cal_num_months = 1;
}

# time window for loading events

my $cal_start_timestamp = timegm(0,0,0,1,$cal_start_month,$cal_start_year) - 2592000;
my $cal_end_timestamp = timegm(0,0,0,1,$cal_end_month,$cal_end_year) + 5184000;
if ($q->param('cal_start_timestamp') ne "" && $q->param('cal_start_timestamp') !~ /\D/)
  {$cal_start_timestamp = $q->param('cal_start_timestamp');}
if ($q->param('cal_end_timestamp') ne "" && $q->param('cal_end_timestamp') !~ /\D/)
  {$cal_end_timestamp = $q->param('cal_end_timestamp');}
  

#$debug_info .="start: $cal_start_timestamp\nend: $cal_end_timestamp\nrightnow: $rightnow\n";

# load event data, for main calendar and its background calendars
my @temp_calendars = ($current_cal_id);
foreach $local_background_calendar (keys %{$current_calendar{local_background_calendars}})
  {push @temp_calendars, $local_background_calendar;}

&load_events($cal_start_timestamp, $cal_end_timestamp, \@temp_calendars);
if ($current_event_id ne "")
{
  &load_event($current_event_id);
  %current_event = %{$events{$current_event_id}};
}


# load events from remote background calendars

if (scalar keys %{$current_calendar{remote_background_calendars}} > 0)
{
  $remote_calendars_status="";
  my $temp = scalar keys %{$current_calendar{remote_background_calendars}};
  foreach $remote_calendar_id (keys %{$current_calendar{remote_background_calendars}})
  {
    # pull in remote calendar name
    my $remote_calendar_url = $current_calendar{remote_background_calendars}{$remote_calendar_id}{url};
    $remote_calendar_complete_url = $remote_calendar_url;
    #$debug_info .= "remote calendar: $remote_calendar_complete_url\n";

    $remote_calendar_complete_url .= "?remote_calendar_request=1&cal_id=$current_calendar{remote_background_calendars}{$remote_calendar_id}{remote_id}&cal_start_year=$cal_start_year&cal_start_month=$cal_start_month&num_months=$cal_num_months";
    #$debug_info .= "remote calendar url: $remote_calendar_complete_url\n";

    my $xml_results = &get_remote_file($remote_calendar_complete_url);
    
    if ($xml_results =~ /<error>/)
    {
      $xml_results =~ s/</&lt;/g;
      $xml_results =~ s/>/&gt;/g;
    
      $debug_info .= "Error fetching remote calendar: $xml_results\n";
    }
    else
    {
      my %remote_calendars = %{&xml2hash($xml_results)};

      my $remote_cal_title=$remote_calendars{'xml'}{calendar}{title};
    
      my $temp=$xml_results;
      $temp=~ s/>/&gt;/g;
      $temp=~ s/</&lt;/g;
      #$debug_info .= "xml results: $temp\n";
      
      &load_remote_events($xml_results, $current_calendar{remote_background_calendars}{$remote_calendar_id});
    }
  }
}


# calculate previous X months range.
my $previous_cal_start_month = $cal_start_month - $cal_num_months;
my $previous_cal_start_year = $cal_start_year;
if ($previous_cal_start_month < 0)
{
  $previous_cal_start_year = $cal_start_year - 1 - int(abs($cal_num_months - $cal_start_month) / 12);
  $previous_cal_start_month = 12 - abs($previous_cal_start_month) % 12;
}

# for the case when num_months = 12 and start_month=0
if ($previous_cal_start_month == 12)
{
  $previous_cal_start_month=0;
  $previous_cal_start_year++;
}


# singular or plural?
if ($cal_num_months > 1)
{
  $prev_string = $lang{previous_months};
  $prev_string =~ s/###num###/$cal_num_months/;
}
else
{
  $prev_string = $lang{previous_month};
}


# calculate next X months range.
my $next_cal_start_month = $cal_start_month + $cal_num_months;
my  $next_cal_start_year = $cal_start_year;
if ($next_cal_start_month > 11)
{
  $next_cal_start_year = $cal_start_year + int(abs($cal_num_months + $cal_start_month) / 12);
  $next_cal_start_month = abs($cal_start_month + $cal_num_months) % 12;
}


# singular or plural?
if ($cal_num_months > 1)
{
  $next_string = $lang{next_months};
  $next_string =~ s/###num###/$cal_num_months/;
}
else
{
  $next_string = $lang{next_month};
}



$consistent_parameter_string="";
&make_consistent ("cal_id");
&make_consistent ("cal_start_month");
&make_consistent ("cal_start_year");
&make_consistent ("cal_num_months");
&make_consistent ("display_type");
&make_consistent ("theme_url");

if ($q->param('diagnostic_mode') eq "1")
{
  my $diagnostic_results = &diagnostic_info;
  
  
  $html_output = <<p1;
Cache-control: no-cache,no-store,private
Content-Type: text/html; charset=$lang{charset}\n
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
<title>Diagnostic mode</title>
</head>
<body style="font-family: arial;">

<br/><br/>
<h2>Plans Diagnostic information</h2>
<br/><br/>
$diagnostic_results

<br/><br/>
<b>Debug info:</b><br/>
<div style="color=:#0000ff;">
$debug_info
</div>
</body>
</html>

p1

  print $html_output;

  exit(0);
}

if ($q->param('detect_remote_calendars') eq "1")
{
  &detect_remote_calendars();
  exit(0);
}

if ($q->param('remote_calendar_request') eq "1")
{
  &remote_calendar_request();
  exit(0);
}

if ($q->param('export_calendar') eq "1")
{
  &normalize_timezone();
  if ($q->param('export_type') eq "ascii_text")
  {
    &ascii_text_cal($cal_start_month, $cal_start_year, $cal_end_month, $cal_end_year);
    exit(0);
  }
  elsif ($q->param('export_type') eq "csv_file")
  {
    &csv_file($cal_start_month, $cal_start_year, $cal_end_month, $cal_end_year);
    exit(0);
  }
  elsif ($q->param('export_type') eq "vcalendar")
  {
    &vcalendar_export_cal($cal_start_month, $cal_start_year, $cal_end_month, $cal_end_year);
    exit(0);
  }
}

if ($q->param('export_event') eq "1")
{
  if ($q->param('export_type') eq "ascii_text")
  {
    &ascii_text_event();
    exit(0);
  }
  elsif ($q->param('export_type') eq "icalendar")
  {
    &icalendar_export_event();
    exit(0);
  }
  elsif ($q->param('export_type') eq "vcalendar")
  {
    &vcalendar_export_event();
    exit(0);
  }
}
elsif ($q->param('view_event') eq "1")
{
  &view_event();
  exit(0);
}
elsif ($q->param('email_reminder') eq "1")
{
  &email_reminder_prompt();
  exit(0);
}
elsif ($q->param('email_reminder_confirm') eq "1")
{
  &email_reminder_confirm();
  exit(0);
}
elsif ($special_action eq "preview_event")
{
  &preview_event();
  exit(0);
}
elsif ($special_action eq "preview_date")
{
  &preview_date();
  exit(0);
}



  $html_output .=<<p1;
Cache-control: no-cache,no-store,private
Content-Type: text/html; charset=$lang{charset}\n

$template_html
p1

  $html_output =~ s/###current calendar title###/$current_calendar{title}/g;
  $html_output =~ s/###calendar\{(\d+)\}\{(.+?)\}###/$calendars{$1}{$2} if ($2 ne 'admin_password')/ge;
  $html_output =~ s/###event\{(\d+)\}\{(.+?)\}###/$events{$1}{$2}/ge;

  $insert_text =<<p1;
<script type="text/javascript" ><!--
###common javascript###
###page-specific javascript###
###browser-specific javascript###
//-->
</script>
p1
  chomp $insert_text;
  $html_output =~ s/###javascript stuff###/$insert_text/;

#default page
&display_default();

exit(0);




sub display_default
{
  chomp $insert_text;
  $html_output =~ s/###css file###/$css_path/g;
  
  
  # tab menu stuff
 $menu_tabs[0] = {status => "inactive",
                  html => "<a href=\"$script_url/$name?active_tab=0$consistent_parameter_string\">$tab_text[0]</a>"};
 $menu_tabs[1] = {status => "inactive",
                  html => "<a href=\"$script_url/$name?active_tab=1$consistent_parameter_string\">$tab_text[1]</a>"};
 $menu_tabs[2] = {status => "inactive",
                  html => "<a href=\"$script_url/$name?active_tab=2$consistent_parameter_string\">$tab_text[2]</a>"};

 $menu_tabs[$active_tab]{status} ="active";
                  
 $menu_tabs[2]{html} = "<a href=\"$script_url/$name?active_tab=2$consistent_parameter_string\">$tab_text[2]</a>";

 $insert_text =<<p1;
<br/>
<div style="padding:0px;margin:0px;margin-left:20px;white-space:nowrap;">
p1

  # this kludge sucks!  
  if ($browser_type eq "IE")
    {$tab_vert_offset=4;}
  else
    {$tab_vert_offset=0;}
  
  #lay out the actual menu tabs
  for ($l1=0;$l1<scalar @tab_text;$l1++)
  {
    if ($tab_text[$l1] eq "") 
      {next;}
    $menu_tab = $menu_tabs[$l1];
    my $style="";
   
   #$tab_vert_offset=0;
    
   if ($$menu_tab{status} eq "active")
   {
     $style="top:".($tab_vert_offset-3)."px;padding-top:5px;padding-bottom:5px;margin-top:0;height:2em;";
   }
   else
   {
     $style="top:".($tab_vert_offset-3)."px;padding-top:3px;padding-bottom:4px;margin-top:1px;height:2em;";
   }
    $insert_text .=<<p1;
<span class="$$menu_tab{status}_tab" style="position:relative;border-bottom-width:0px;padding-top:5px;margin-bottom:0;margin-left:5px;margin-right:2px;white-space:nowrap;text-align:center;$style"> &nbsp; &nbsp; &nbsp; $$menu_tab{html} &nbsp; &nbsp; &nbsp; </span>
p1
   
    $noinsert_text .=<<p1;
<span class="$$menu_tab{status}_tab" style="position:relative;$style">$$menu_tab{html} &nbsp; &nbsp; &nbsp; </span>
p1
  }
  
  $insert_text .=<<p1;
</div>
p1
  chomp $insert_text;


    if ($q->param('custom_calendar') == 1)
    {
      $html_output =~ s/###tab menu stuff###//g;
    }
    else
    {
      $html_output =~ s/###tab menu stuff###/$insert_text/g;
    }
    
    
  $insert_text ="";

  #invisible html for context menu  
    $insert_text .=<<p1;
<div id="contextmenu" class="contextmenu" style="visibility:hidden;">
</div>
p1

  #main box stuff
  $insert_text .=<<p1;
p1

  #finished displaying tab menus, now time to display the appropriate stuff for
  #the selected tab

  if ($active_tab eq "0") #the first tab is the main calendar view
  {
    my $cal_controls_text =<<p1;
<div class="calendar_controls">
<form name="tab0_form" action="$script_url/$name" method="get">
<input type="hidden" name="theme_url" value="$theme_url"/>

<div style="float:right;margin:5px;padding:2px;vertical-align:middle;">
<input id="controls_submit_button" type="submit" value="$lang{controls_change}"/>
</div>

<div style="margin:5px;padding:2px;text-align:right;float:right;">
$lang{controls_start_month}: 
<select name="cal_start_month" onChange="blink('controls_submit_button', 3, 0);">
p1
    #list each month in the year
    $month_index=0;
    foreach $possible_month (@months)
    {
      if ($cal_start_month eq $month_index)
      {
        $cal_controls_text .=<<p1;
<option value="$month_index" selected>$possible_month
p1
      }
      else
      {
        $cal_controls_text .=<<p1;
<option value="$month_index">$possible_month
p1
      }
      $month_index++;
    }
    $cal_controls_text .=<<p1;
</select>
<input name="cal_start_year" value = "$cal_start_year" size=4 onChange="blink('controls_submit_button', 3, 0);"/><br/>
$lang{controls_num_months}
<input name="cal_num_months" value = "$cal_num_months" size=3 onChange="blink('controls_submit_button', 3, 0);"/>
</div>
p1
      $cal_controls_text .=<<p1;
<div class="calendar_select" style="margin:5px;padding:2px;float:left;text-align:left;">
$lang{controls_calendar_label}<br/>
p1

    my $num_selectable_calendars = scalar keys %{$current_calendar{selectable_calendars}};
    
    my @selectable_calendars;
    if ($options{all_calendars_selectable})
    {
      @selectable_calendars = keys %calendars;
    }
    else
    {
      @selectable_calendars = keys %{$current_calendar{selectable_calendars}};
    }
    
    
    if (scalar @selectable_calendars > 0)
    {
      $cal_controls_text .=<<p1;
<select name="cal_id" onChange="blink('controls_submit_button', 3, 0);">
p1
  
  
      #list each calendar for the user to select
      my %explicit_calendar_order;
      if ($options{calendar_select_order} ne "alpha" && $options{calendar_select_order} ne "")
      {
        my @cal_order_ids = split(',',$options{calendar_select_order});
        my $cal_order_index = 0;
        foreach $cal_order_id (@cal_order_ids)
        {
          $explicit_calendar_order{$cal_order_id} = $cal_order_index;
          $cal_order_index++;
        }
      }

      foreach $selectable_calendar_id (sort {
                                        if ($options{calendar_select_order} eq "alpha")
                                        {
                                          return lc $calendars{$a}{title} cmp lc $calendars{$b}{title};
                                        }
                                        elsif ($options{calendar_select_order} ne "")
                                          {return $explicit_calendar_order{$a} <=> $explicit_calendar_order{$b};}
                                        else
                                          {return $a <=> $b;}
                                        
                                      }  @selectable_calendars)
      {
        my $selected ="";
        $selected =" selected" if ($selectable_calendar_id eq $current_calendar{id});
        $selectable_calendar_id=~ s/\D//g;
        
        $cal_controls_text .=<<p1;
<option value = "$selectable_calendar_id"$selected>$calendars{$selectable_calendar_id}{title}
p1
      }
  
      $cal_controls_text .=<<p1;
</select>
p1
    }
    else
    {
      $cal_controls_text .=<<p1;
<span style="font-weight:bold;">$current_calendar{title}</span>
<input type="hidden" name="cal_id" value="$current_calendar{id}"/>
p1
    }
      $cal_controls_text .=<<p1;
</div>
p1
    
    
    $cal_controls_text .=<<p1;
<div style="margin:5px;padding:2px;float:left;text-align:left;">
$lang{controls_display_label}<br/>
<select name="display_type" onChange="blink('controls_submit_button', 3, 0);">
p1
    #foreach $possible_display_type (@{$options{display_types}})
    for (my $l1=0;$l1<scalar @{$options{display_types}};$l1++)
    {
      if ($options{display_types}[$l1] ne "1")
        {next};
      my $selected="";
      
      if ($l1 eq $display_type) 
        {$selected = "selected";}
        
      $cal_controls_text .=<<p1;
<option value="$l1" $selected>$lang{controls_display_type}[$l1]
p1
    }
    $cal_controls_text .=<<p1;
</select>
</div>
p1



    $cal_controls_text .=<<p1;
<br style="clear:both;"/>
</form>
</div>
p1
    if ($q->param('custom_calendar') == 1)
    {
      $html_output =~ s/###calendar controls###//g;
    }
    else
    {
      $html_output =~ s/###calendar controls###/$cal_controls_text/g;
    }
    
    $insert_text .= &do_calendar_list_view();  
    
    #select event range
    
    $cal_month_start_date = timegm(0,0,0,1,$cal_start_month,$cal_start_year);
    @cal_month_start_date_array = gmtime $cal_month_start_date;
  
    $events_start_timestamp = $cal_month_start_date - 604800;                            # +7 day margin
    $events_end_timestamp = &find_end_of_month($cal_end_month, $cal_end_year) + 604800;  # +7 day margin
      
    #now that we have selected the appropriate events, we can 
    #generate the corresponding javascript and calendar view
    #and insert/add it to the html output.
    $common_javascript = &common_javascript();
    $page_javascript = &calendar_view_javascript($events_start_timestamp, $events_end_timestamp);
  
    #display browser-appropriate javascript
    if ($browser_type eq "IE" || $browser_type eq "Opera")
      {$browser_javascript = &IE_javascript();}
    else
      {$browser_javascript = &NS6_javascript();}
    
    #replace javascript placeholders with actual html/javascript code

    $html_output =~ s/###common javascript###/$common_javascript/;
    $html_output =~ s/###page-specific javascript###/$page_javascript/;
    $html_output =~ s/###browser-specific javascript###/$browser_javascript/;
    
    my $temp1 .=<<p1;
<a class="prev_next" href="$script_url/$name?cal_id=$current_cal_id&amp;display_type=$display_type&amp;cal_start_month=$previous_cal_start_month&amp;cal_start_year=$previous_cal_start_year&amp;cal_num_months=$cal_num_months ">$prev_string</a>
p1
    my $temp2 .=<<p1;
<a class="prev_next" href="$script_url/$name?cal_id=$current_cal_id&amp;display_type=$display_type&amp;cal_start_month=$next_cal_start_month&amp;cal_start_year=$next_cal_start_year&amp;cal_num_months=$cal_num_months">$next_string</a>
p1
    $html_output =~ s/###previous month link###/$temp1/g;
    $html_output =~ s/###next month link###/$temp2/g;
    
  }
  elsif ($active_tab eq "1") #the second tab is the add/edit events view
  {
    $html_output =~ s/###calendar controls###//;

    $insert_text .=<<p1;
<form id="add_event_form" name="add_event_form" action="$script_url/$name" method="POST">
<input type="hidden" name="active_tab" value="1"/>
<input type="hidden" name="special_action" value=""/>
<input type="hidden" name="add_edit_event" value="$add_edit_event"/>
<input type="hidden" name="evt_id" value="$current_event_id"/>
<input type="hidden" name="cal_id" value="$current_cal_id"/>
<input type="hidden" name="cal_start_month" value="$cal_start_month"/>
<input type="hidden" name="cal_start_year" value="$cal_start_year"/>
<input type="hidden" name="cal_num_months" value="$cal_num_months"/>
<input type="hidden" name="display_type" value="$display_type"/>
<input type="hidden" name="theme_url" value="$theme_url"/>
p1
    
    $insert_text .= &add_edit_events();
    $insert_text .=<<p1;
</form>
p1
   
    #generate javascript for add/edit events page
    $common_javascript = &common_javascript();
    $page_javascript = &add_edit_events_javascript();
  
    #display browser-appropriate javascript
    if ($browser_type eq "IE" || $browser_type eq "Opera")
    {$browser_javascript = &IE_javascript();}
    else
    {$browser_javascript = &NS6_javascript();}
    
    #replace javascript placeholders with actual html/javascript code
    $html_output =~ s/###common javascript###/$common_javascript/;
    $html_output =~ s/###page-specific javascript###/$page_javascript/;
    $html_output =~ s/###browser-specific javascript###/$browser_javascript/;
    
    # sneak in the color select javascript before all other javascript.
    my $temp =<<p1; 
<script  type="text/javascript" src="$theme_url/color_select.js"></script>
p1
    $html_output =~ s/(<script)/$temp$1/;
  }
  elsif ($active_tab eq "2") #the third tab is for calendar information
  {
    &load_new_calendars();
    $html_output =~ s/###calendar controls###//;
    if ($add_edit_cal_action eq "")  # calendar management view
    {
      $num_new_calendars = scalar keys %new_calendars;
    
      if ($num_new_calendars == 0)
        {$new_calendars_info = $lang{tab2_no_new_calendars};}
      else
      {
        $new_calendars_info = $lang{tab2_some_new_calendars};
        $new_calendars_info =~ s/###num###/$num_new_calendars/;
      }
    
      $insert_text .=<<p1;
<div>
<div class="info_box" style="margin-top:20px;float:left;padding-left:20px;padding-right:20px;text-align:left;">

<form name="view_cal_form" action="$script_url/$name" method="POST">
<input type="hidden" name = "active_tab" value="2"/>
<input type="hidden" name = "cal_start_month" value="$cal_start_month"/>
<input type="hidden" name = "cal_start_year" value="$cal_start_year"/>
<input type="hidden" name = "cal_num_months" value="$cal_num_months"/>
<input type="hidden" name = "display_type" value="$display_type"/>
<input type="hidden" name = "special_action" value="$special_action"/>
<input type="hidden" name = "add_edit_cal_action" value="edit"/>
<input type="hidden" name="theme_url" value="$theme_url"/>

$lang{tab2_select_a_calendar}
<select name="cal_id">
p1
      foreach $cal_id (sort {$a <=> $b} keys %calendars)
      {
        my $selected="";
        if ($cal_id eq $current_cal_id)
        {
          #$debug_info .= "$cal_id<br/>";
          $selected=" selected";
        }
        $insert_text .=<<p1;
<option value = "$cal_id"$selected>$calendars{$cal_id}{title}
p1
      }

    $insert_text .=<<p1;
</select>
</form>
<ul>
<li><a href="javascript:display_cal_info(document.view_cal_form.cal_id.options[document.view_cal_form.cal_id.selectedIndex].value)">$lang{tab2_view_calendar_details}</a></li>
p1

    $writable{calendars_file} and $insert_text .=<<p1;
<li><a href="javascript:document.view_cal_form.submit();">$lang{tab2_edit_delete}</a></li>
p1

  $writable{new_calendars_file} and $insert_text .=<<p1;
</ul>
</div>

<div class="info_box" style="float:left;clear:left;width:90%;margin-top:20px;padding-left:20px;padding-right:20px;text-align:left;">
<ul>

<li><a href="$script_url/$name?active_tab=2&amp;add_edit_cal_action=add$consistent_parameter_string">$lang{tab2_add_new_calendar}</a></li>
<li><a href="$script_url/$name?active_tab=2&amp;add_edit_cal_action=view_pending$consistent_parameter_string">$lang{tab2_view_new_calendars}</a> $new_calendars_info</li>

</ul>
</div>

<br style="clear:both;"/>
</div>

p1
    }
    elsif($add_edit_cal_action eq "add" || $add_edit_cal_action eq "edit")  #add/edit calendars
    {    
      $insert_text .=<<p1;
<form id="update_cal_form" name="update_cal_form" action="$script_url/$name" method="POST">
p1
      $insert_text .=  &add_edit_calendars();
      $insert_text .=<<p1;
</form>
p1
    }
    elsif ($add_edit_cal_action eq "view_pending")  #view/approve/reject new pending calendars
    {
      $insert_text .=  &view_pending_calendars();
    }
    
    
    #generate javascript for calendar info page
    $common_javascript = &common_javascript();
    $page_javascript = &cal_info_view_javascript();
    $page_javascript.= &add_edit_calendars_javascript();

    #display browser-appropriate javascript   
    if ($browser_type eq "IE" || $browser_type eq "Opera")
    {$browser_javascript = &IE_javascript();}
    else
    {$browser_javascript = &NS6_javascript();}
    
    #replace javascript placeholders with actual html/javascript code
    $html_output =~ s/###common javascript###/$common_javascript/;
    $html_output =~ s/###page-specific javascript###/$page_javascript/;
    $html_output =~ s/###browser-specific javascript###/$browser_javascript/;
    
    # sneak in the color select javascript before all other javascript.
    my $temp =<<p1; 
<script  type="text/javascript" src="$theme_url/color_select.js"></script>
p1
    $html_output =~ s/(<script)/$temp$1/;
    
  }
  
  #done with main active tab stuff (the stuff that's different depending
  #on which tab is active.  The following stuff is the same regardless
  #of which tab is active.
  
  $html_output =~ s/###calendar area###/$insert_text/g;
  $html_output =~ s/###version###/$plans_version/g;
  
  
  my $add_event_to_current_cal_text =<<p1;
<a target = "_self" href="$script_url/$name?active_tab=1&amp;cal_id=$current_cal_id">$lang{add_event_to_this_calendar}</a>
p1
  chomp $add_event_to_current_cal_text;
  
  my $current_calendar_options_text =<<p1;
<a target="_self" href="$script_url/$name?active_tab=2&amp;cal_id=$current_cal_id&amp;add_edit_cal_action=edit">$lang{edit_calendar_options}</a>
p1
  chomp $current_calendar_options_text;
  
  if ($active_tab eq "0")
  {
    $html_output =~ s/###add event to current calendar link###/$add_event_to_current_cal_text/;
    $html_output =~ s/###edit calendar options link###/$current_calendar_options_text/;
    
    my $temp = &export_calendar_link();
    $html_output =~ s/###export calendar link###/$temp/;
    
    my $custom_calendar_link =<<p1;
<a href="javascript:custom_calendar()">$lang{make_custom_calendar}</a>
p1
    chomp $custom_calendar_link;
    $html_output =~ s/###custom calendar link###/$custom_calendar_link/;

    #$debug_info .= "custom calendar link: $custom_calendar_link\n";
  }
  else
  {
    $html_output =~ s/###add event to current calendar link###//;
    $html_output =~ s/###edit calendar options link###//;
    $html_output =~ s/###custom calendar link###//;
    $html_output =~ s/###export calendar link###//;
  }
  
  $debug_info = "$error_info$debug_info";
  
  if ($debug_info =~ /\S/)
  {
    $debug_info =~ s/\n/<br\/>\n/g;
    $debug_info = <<p1;
<div style="width:100%;padding:10px;margin:10px;border:solid 1px #000;background-color:#fff;">
<b>Error, Warnings, & Debug Messages:</b><br/>
$debug_info
<\/div>
p1
  }
  $html_output =~ s/###debug stuff###/$debug_info/g;

  print $html_output;

} #********************end default view code*****************************

sub add_edit_calendars
{

  my $temp="<link rel=\"stylesheet\" href=\"$theme_url/color_select.css\" type=\"text/css\">";
  $html_output =~ s/<head>/<head>\n$temp\n/;

  my $return_text = "";
  
  my $cal_start_month = $q->param('cal_start_month');
  my $cal_start_year = $q->param('cal_start_year');
  my $cal_num_months = $q->param('cal_num_months');

  if ($q->param('update_cal_button') eq "" && $q->param('del_cal_button') eq "")  #add/edit calendar main screen
  {
    $add_edit_string = $lang{add_new_calendar};
    #generate html for blank (default) calendar preview window
   
    $cal_details = $new_calendar_default_details;
    $shared_cal_select_size = scalar keys %calendars;
    $cal_link="http://";
    
    if ($add_edit_cal_action ne "edit")
      {%current_calendar = %default_cal;}
    
    $add_edit_string = "$lang{edit_calendar} ($current_calendar{title})" if ($add_edit_cal_action eq "edit");
    
    my %checked;
    $checked{list_background_calendars_together} = " checked" if ($current_calendar{list_background_calendars_together} eq "yes");
    $checked{background_events_display_style1} = " checked" if ($current_calendar{background_events_display_style} eq "normal");
    $checked{background_events_display_style2} = " checked" if ($current_calendar{background_events_display_style} eq "single_color");
    $checked{background_events_display_style3} = " checked" if ($current_calendar{background_events_display_style} eq "faded");
    
    $current_calendar{custom_stylesheet} = "http://$current_calendar{custom_stylesheet}";
    $current_calendar{custom_template} = "http://$current_calendar{custom_template}";
    
    $cal_details =~ s/</&lt;/g;     
    $cal_details =~ s/>/&gt;/g;     
      
    $return_text .=<<p1;
    
<!-- color_select_box 0-->
<div id="color_select_box0" class="color_select_box" style="display:none;">
<!-- cursors -->
<div id="sv_crosshair_horiz_cursor0" class="sv_crosshair_horiz_cursor" style="visibility:hidden;">
</div>
<div id="sv_crosshair_center_cursor0" class="sv_crosshair_center_cursor" style="visibility:hidden;">
</div>
<div id="sv_crosshair_vert_cursor0" class="sv_crosshair_vert_cursor" style="visibility:hidden;">
</div>
<!-- /cursors -->
<div id="sv_select_box_bg0" class="sv_select_box" style="background-color:#0000ff;">
<div id="sv_select_box0" onMouseDown="cs0.sv_select_box_focus=true;color_select_update();"
                      onMouseUp="cs0.sv_select_box_focus=false;color_select_update();"
 style="line-height:256px;height:256px;filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true src='$graphics_url/sv_blend.png')">
<br/>
</div>
</div>
<div id="h_select_box0" class="h_select_box" style="margin-left:5px;background-image:url($graphics_url/hue_blend.png)" 
 onMouseDown="cs0.h_select_box_focus=true;color_select_update()" onMouseUp="cs0.h_select_box_focus=false;color_select_update();">
<div id="hue_cursor0" class="hue_cursor" style="visibility:hidden;">
</div>
</div>
<div id="color_box0" class="color_box">
<div id="color_value_box0" class="color_value_box">
</div>
</div>
</div> 
<!-- end color_select_box 0-->  
  
<!-- color_select_box 1-->
<div id="color_select_box1" class="color_select_box" style="display:none;">
<!-- cursors -->
<div id="sv_crosshair_horiz_cursor1" class="sv_crosshair_horiz_cursor" style="visibility:hidden;">
</div>
<div id="sv_crosshair_center_cursor1" class="sv_crosshair_center_cursor" style="visibility:hidden;">
</div>
<div id="sv_crosshair_vert_cursor1" class="sv_crosshair_vert_cursor" style="visibility:hidden;">
</div>
<!-- /cursors -->
<div id="sv_select_box_bg1" class="sv_select_box" style="background-color:#0000ff;">
<div id="sv_select_box1" onMouseDown="cs1.sv_select_box_focus=true;color_select_update();"
                      onMouseUp="cs1.sv_select_box_focus=false;color_select_update();"
 style="line-height:256px;height:256px;filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true src='$graphics_url/sv_blend.png')">
<br/>
</div>
</div>
<div id="h_select_box1" class="h_select_box" style="margin-left:5px;background-image:url($graphics_url/hue_blend.png)" 
 onMouseDown="cs1.h_select_box_focus=true;color_select_update()" onMouseUp="cs1.h_select_box_focus=false;color_select_update();">
<div id="hue_cursor1" class="hue_cursor" style="visibility:hidden;">
</div>
</div>
<div id="color_box1" class="color_box">
<div id="color_value_box1" class="color_value_box">
</div>
</div>
</div> 
<!-- end color_select_box 1-->    
    
<input type="hidden" name="active_tab" value="2"/>
<input type="hidden" name="add_edit_cal_action" value="$add_edit_cal_action"/>
<input type="hidden" name="cal_id" value="$current_calendar{id}"/>
<input type="hidden" name="cal_start_month" value="$cal_start_month"/>
<input type="hidden" name="cal_start_year" value="$cal_start_year"/>
<input type="hidden" name="cal_num_months" value="$cal_num_months"/>
<input type="hidden" name="display_type" value="$display_type"/>
<input type="hidden" name="theme_url" value="$theme_url"/>
<input type="hidden" name="new_remote_calandars_xml" value=""/>

<p class="cal_title" style="text-align:center;">
$add_edit_string
</p>

<div class="info_box" style="text-align:center;margin-bottom:2em;float:left;">
<span class="optional_field">$lang{fields_text1} <span class="required_field">$lang{fields_text2}</span> $lang{fields_text3}</span>
</div>

<div style="width:90%;text-align:left;white-space:nowrap;clear:left;">
<a id="tab0" href="javascript:tab_show(0)" class="info_box_tab active">$lang{add_edit_calendars_tab0}</a>
<a id="tab1" href="javascript:tab_show(1)" class="info_box_tab">$lang{add_edit_calendars_tab1}</a>
<a id="tab2" href="javascript:tab_show(2)" class="info_box_tab">$lang{add_edit_calendars_tab2}</a>
<a id="tab3" href="javascript:tab_show(3)" class="info_box_tab">$lang{add_edit_calendars_tab3}</a>
</div>

<div id="tab_area0" class="info_box" style="width:100%;position:relative;z-index:101;padding-top:20px;">


<div class="leftcol" style="">
<label class="required_field" for="cal_title">$lang{calendar_title}</label>
</div>
<div class="rightcol" style="white-space:nowrap;">
<input id="cal_title" name="cal_title" style="width:50%;" value = "$current_calendar{title}"/>
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('cal_title','$lang{calendar_title}')">$lang{help_on_this}</a></span>
</div>

<div class="leftcol" style="">
<label class="optional_field" for="cal_link">$lang{calendar_link}</label>
</div>
<div class="rightcol" style="white-space:nowrap;">
<input id="cal_link" name="cal_link" style="width:50%;" value = "$current_calendar{link}"/>
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('cal_link','$lang{calendar_link}')">$lang{help_on_this}</a></span>
</div>

<div class="leftcol" style="">
<label class="optional_field" for="cal_details">$lang{calendar_details}</label>
<br/>
<span class="small_note" style="vertical-align:top;" ><a href="javascript:display_help('cal_details','$lang{calendar_details}')">$lang{help_on_this}</a>&nbsp;&nbsp;</span>
</div>
<div class="rightcol" style="white-space:nowrap;">
<textarea name="cal_details" id="cal_details" rows=10 cols=0 style="width:100%;">
$current_calendar{details}
</textarea>
</div>


<div style="clear:both;text-align:center;padding-top:20px;padding-bottom:20px;">
<b><a href="javascript:preview_cal()">$lang{preview_calendar_details}</a></b>
</div>

<br style="clear:both;"/>&nbsp;
</div>

<div id="tab_area1" class="info_box" style="width:100%;display:none;position:relative;z-index:101;padding-top:20px;">
<div style="float:left;width:45%;text-align:left;">




<div style="border:solid 1px #cccccc;margin:5px;padding:5px;">
p1
    if (scalar (keys %calendars) > 1 || $add_edit_cal_action ne "edit")
    {
  $return_text .=<<p1;
<label class="optional_field" style="float:left;" for="background_calendars">$lang{background_calendars1}<br/><span class="small_note">$lang{background_calendars2}</span>
<br/><span class="small_note" ><a href="javascript:display_help('cal_background_calendars','$lang{background_calendars1}')">$lang{help_on_this}</a></span>
<br/>
$lang{background_calendars3}
</label>
<select multiple size=8 style="display:block;clear:left;" name="background_calendars" id="background_calendars">
p1
#'
      foreach $cal_id (sort {$a <=> $b} keys %calendars)
      {
        #don't display a choice for the calendar currently being edited
        if ($cal_id eq $current_calendar{id})
          {next;}

        #$debug_info .= "$current_calendar{title} local_background_calendars{$cal_id} = $current_calendar{local_background_calendars}{$cal_id}\n";
        my $selected="";
        
        if ($current_calendar{local_background_calendars}{$cal_id} eq "1")
          {$selected = " selected";}
          
          $return_text .=<<p1;
<option value = "$cal_id"$selected>$calendars{$cal_id}{title}
p1
      }

      $return_text .=<<p1;
</select>
p1
    }

    $return_text .=<<p1;
</div>
<div style="border:solid 1px #cccccc;margin:5px;padding:5px;">
<label class="optional_field" style="float:left;" for="remote_background_calendars">$lang{remote_background_calendars1}</label> 
&nbsp;<span class="small_note" ><a href="javascript:display_help('help_remote_background_calendars','$lang{remote_background_calendars1}')">$lang{help_on_this}</a></span>
p1
    my $remote_calendars_status = $lang{remote_background_calendars_none};

    if (scalar keys %{$current_calendar{remote_background_calendars}} > 0)
    {
      $remote_calendars_status="";
      my $temp = scalar keys %{$current_calendar{remote_background_calendars}};
      if ($temp>4) {$temp=4};
      $temp = ($temp * 20)."px";
          
      $return_text .=<<p1;
<div class="scroll_surround" style="height:$temp;white-space:nowrap;">
p1
      foreach $remote_calendar_id (keys %{$current_calendar{remote_background_calendars}})
      {
        # pull in remote calendar name
          my $remote_calendar_url = $current_calendar{remote_background_calendars}{$remote_calendar_id}{url};
          $remote_calendar_complete_url = $remote_calendar_url;

          $remote_calendar_complete_url .= "?remote_calendar_request=1&cal_id=$current_calendar{remote_background_calendars}{$remote_calendar_id}{remote_id}&cal_start_year=1971&cal_start_month=0&num_months=1";
          my $xml_results = &get_remote_file($remote_calendar_complete_url);
          
          if ($xml_results =~ /<error>/)
          {
            $xml_results =~ s/</&lt;/g;
            $xml_results =~ s/>/&gt;/g;
          
            $debug_info .= "Error fetching remote calendar: $xml_results\n";
          }
          else
          {
            my %remote_calendars = %{&xml2hash($xml_results)};

            my $remote_cal_title=$remote_calendars{'xml'}{calendar}{title};
        
            $return_text .=<<p1;
<a target="_blank" href="$remote_calendar_url?cal_id=$current_calendar{remote_background_calendars}{$remote_calendar_id}{remote_id}" style="font-size:small;">$remote_cal_title</a>
&nbsp;&nbsp;&nbsp;&nbsp;
(<input type="checkbox" name="delete_remote_calendar_$remote_calendar_id" style="margin-top:0;margin-bottom:0;padding:0;vertical-align:bottom;" value="y"/>$lang{get_remote_calendar3})
<br/>
p1
          }
          
      }
      $return_text .=<<p1;
</div>
p1
    }
      $return_text .=<<p1;
<div id="remote_background_calendars_status" class="small_note">$remote_calendars_status</div>
<div class="small_note"><a href="javascript:get_remote_calendars();">$lang{get_remote_calendars}</a></div>
p1
      $return_text .=<<p1;
</div> <!-- end border div -->
p1

    my $temp1="";
    my $temp2="";
    my $temp3="";
    if ($current_calendar{allow_remote_calendar_requests} =~ /y/)
      {$temp1=" checked";}
      
    if ($current_calendar{remote_calendar_requests_require_password} =~ /y/)
    {
      $temp2=" checked";
      $temp3="$current_calendar{remote_calendar_requests_password}";
    }
      
    $return_text .=<<p1;
<div style="border:solid 1px #cccccc;margin:5px;padding:5px;">
<input type="checkbox" id="allow_remote_calendar_requests" name="allow_remote_calendar_requests" value="yes" $temp1 onclick="update_remote_calendar_requests()"/>
<label class="optional_field" for="allow_remote_calendar_requests">$lang{allow_remote_calendar_requests}</label>
<br/><span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('allow_remote_calendar_requests','$lang{allow_remote_calendar_requests}')">$lang{help_on_this}</a></span>
<br/>
<input type="checkbox" id="remote_calendar_requests_require_password" name="remote_calendar_requests_require_password" value="yes" $temp2  onclick="update_remote_calendar_requests()"/>
<label class="optional_field" for="remote_calendar_requests_password">$lang{remote_calendar_requests_password1}</label>
<input type="password" id="remote_calendar_requests_password" name="remote_calendar_requests_password" value="$temp3"/>
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('remote_calendar_requests_password','$lang{remote_calendar_requests_password1}')">$lang{help_on_this}</a></span>
</div> 







</div>  <!-- end left column -->
<div style="float:left;width:45%;text-align:left;">

<div style="border:solid 1px #cccccc;margin:5px;padding:5px;">
p1
    if ($options{all_calendars_selectable} eq "1")
    {
      $return_text.=<<p1;
<label class="optional_field" style="float:left;">$lang{selectable_calendars1}</label>
<br/><span class="small_note">($lang{selectable_calendars3})</span>
<br style="clear:both;"/>&nbsp;
p1

    }
    else
    {
      if (scalar (keys %calendars) > 1 || $add_edit_cal_action ne "edit")
      {
  $return_text .=<<p1;
<label class="optional_field" style="float:left;" for="selectable_calendars">$lang{selectable_calendars1}
<br/><span class="small_note">$lang{selectable_calendars2}</span> 
<span class="small_note" style="margin-left:1em;white-space:nowrap;"><a href="javascript:display_help('selectable_calendars','$lang{selectable_calendars1}')">$lang{help_on_this}</a></span>
</label>
<select multiple size=8 style="display:block;clear:left;" name="selectable_calendars" id="selectable_calendars">
p1
        foreach $cal_id (sort {$a <=> $b} keys %calendars)
        {
          #don't display a choice for the calendar currently being edited
          if ($cal_id eq $current_calendar{id})
            {next;}
          my $selected="";
    
          if ($current_calendar{selectable_calendars}{$cal_id} eq "1" || $add_edit_cal_action eq "add")
            {$selected = " selected";}
          
          $return_text .=<<p1;
<option value = "$cal_id"$selected>$calendars{$cal_id}{title}
p1
        }
        $return_text .=<<p1;
</select>
p1
      }
     
      if ($options{new_calendars_automatically_selectable} eq "1")
      {
        my $temp="";
        if ($current_calendar{new_calendars_automatically_selectable} =~ /y/)
          {$temp=" checked";}
        $return_text .=<<p1;
<div style="margin-top:2ex;">
<input type="checkbox" id="new_calendars_automatically_selectable" name="new_calendars_automatically_selectable" value="y" $temp/>
<label class="optional_field" for="new_calendars_automatically_selectable">$lang{new_calendars_automatically_selectable}</label>
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('new_calendars_automatically_selectable','$lang{new_calendars_automatically_selectable}')">$lang{help_on_this}</a></span>
</div>
p1
      }
    }
    
      $return_text .=<<p1;
</div>

<div style="border:solid 1px #cccccc;margin:5px;padding:5px;">
<input type="checkbox" id="list_background_calendars_together" name="list_background_calendars_together" value = "yes" $checked{list_background_calendars_together}/>
<label class="optional_field" for="list_background_calendars_together">$lang{bg_events_display_style8}</label>
<br/><span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('list_background_calendars_together','$lang{bg_events_display_style8}')">$lang{help_on_this}</a></span>
</div>
   
</div> <!--end right column-->
    
<br style="clear:both;"/>&nbsp;
</div>




<div id="tab_area2" class="info_box" style="width:100%;display:none;position:relative;z-index:101;padding-top:20px;">

<div style="float:left;width:45%;text-align:left;">
<div style="border:solid 1px #cccccc;margin:5px;padding:5px;">

<div class="optional_field">
$lang{cal_events_display_style1}
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('calendar_events_display_style','$lang{bg_events_display_style1}')">$lang{help_on_this}</a></span>
</div>

<div style="clear:left;margin-top:2em;" onClick="cs_init();">
<label class="optional_field" for="cal_events_display_style2">$lang{cal_events_display_style2}</label>
<input name="dummy" value="" size=1 style="display:none;">
<select id="calendar_events_color" name="calendar_events_color" value = "" style="margin-left:27px;width:10ex;" onChange="update_cal_color_select_box();" onKeyPress="if (event.keyCode == 13){return false;}">
<option value="" style="background-color:#fff;">none</option>
p1
      my $custom_color=1;
      #update_bg_color_select_box()cs1.setrgb(this.value);


      foreach $temp (@event_bgcolors)
      {
        %possible_bgcolor = %{$temp};
        my $selected="";
        if ($possible_bgcolor{color} eq "$current_calendar{calendar_events_color}")  #default
        {
          $custom_color=0;
          $selected=" selected";
        }
        my $description = "";
        if ($options{show_event_background_color_descriptions})
          {$description = $possible_bgcolor{title}}
      
        $return_text .=<<p1;
<option value = "$possible_bgcolor{color}" style="background-color:$possible_bgcolor{color};"$selected>$description
p1
      }
    
      my $color_select_icon_style="visibility:hidden;";
      if ($custom_color == 1 && $current_calendar{calendar_events_color} ne "")
      {
        $color_select_icon_style="";
        $return_text .=<<p1;
<option id="custom_evt_color" value = "$current_calendar{calendar_events_color}" selected style="background-color:$current_calendar{calendar_events_color};">$lang{event_background_colorcustom}
p1
      }
      else
      {
        $return_text .=<<p1;
<option id="custom_evt_color" value="#ffffff" style="background-color:#fff;">$lang{event_background_colorcustom}
p1
      }

      $return_text .=<<p1;
</select>



<span id="color_select_icon1" class="color_select_icon" style="$color_select_icon_style vertical-align:top;background-image:url($graphics_url/color_select_icon.gif);" onClick="cs_init();cs1.toggle_color_select();">&nbsp;&nbsp;&nbsp;&nbsp;</span>
</div>

</div>
</div> <!-- end left column -->

<div style="float:left;width:45%;text-align:left;">



<div style="border:solid 1px #cccccc;margin:5px;padding:5px;">
<div class="optional_field">
$lang{bg_events_display_style1}
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('background_events_display_style','$lang{bg_events_display_style1}')">$lang{help_on_this}</a></span>
</div>

<div style="clear:left;margin-top:1em;" onClick="document.update_cal_form.background_events_display_style[0].checked=true;document.getElementById('bg_preview_e1').style.background = '#ffffcc';document.getElementById('bg_preview_e2').style.background = '#ccffff';document.update_cal_form.background_events_color.value = '';">
<input type="radio" id="background_events_display_style1" name="background_events_display_style" value = "normal" $checked{background_events_display_style1}/>
<label class="optional_field" for="background_events_display_style1">$lang{bg_events_display_style2}</label>
</div>

<div style="clear:left;margin-top:2em;" onClick="cs_init();document.update_cal_form.background_events_display_style[1].checked=true;">
<input type="radio" id="background_events_display_style2" name="background_events_display_style" value = "single_color" $checked{background_events_display_style2}/>
<label class="optional_field" for="background_events_display_style2">$lang{bg_events_display_style3}</label>
<input id="background_events_color" name="background_events_color" value = "$current_calendar{background_events_color}" style="margin-left:27px;width:10ex;" onChange="cs0.setrgb(this.value);" onKeyPress="if (event.keyCode == 13){return false;}">
<span id="color_select_icon0" class="color_select_icon" style="vertical-align:top;background-image:url($graphics_url/color_select_icon.gif);" onClick="cs_init();cs0.toggle_color_select();">&nbsp;&nbsp;&nbsp;&nbsp;</span>
</div>

<div style="clear:left;margin-top:2em;" onClick="document.update_cal_form.background_events_display_style[2].checked=true;fade_preview();document.update_cal_form.background_events_color.value = ''">
<input type="radio" id="background_events_display_style3" name="background_events_display_style"  value = "faded" $checked{background_events_display_style3}/>
<label class="optional_field" for="background_events_display_style3">$lang{bg_events_display_style4}</label>
<select id="background_events_fade_factor" name="background_events_fade_factor" onChange="fade_preview();">
p1
    for ($i=1;$i<8;$i++)
    {
      my $selected="";
      $selected = " selected" if ($i eq $current_calendar{background_events_fade_factor});
        $return_text .=<<p1;
<option value="$i"$selected>$i\l0\% faded
p1
    }

    $return_text .=<<p1;
</select>
</div>

</div>


</div> <!-- end right column -->



<div style="clear:both;border:solid 1px #cccccc;margin:5px;padding:5px;">
<div style="text-align:center;margin-top:20px;" class="optional_field">$lang{bg_events_display_style5}</div>
<table class="calendar">
<tr><td class="day" style="border-bottom-width:0;">
<span class="this_month">1</span> 
</td><td class="day" style="border-bottom-width:0;">
<div>2</div> 
</td></tr>
<tr><td class="day" style="border-top-width:0;border-bottom-width:0;">
  <a id="preview_e1" class="event_box" href="" style="display:block;background-color:#ffffcc;">
  $lang{bg_events_display_style6}
  </a>
</td><td class="day" style="border-top-width:0;border-bottom-width:0;">
  <a id="bg_preview_e1" class="event_box background" style="display:block;background-color:#ffffcc;" href="">
  $lang{bg_events_display_style7}
  </a>
   <a id="preview_e2" class="event_box" href="" style="display:block;background-color:#ccffcc;">
  $lang{bg_events_display_style6}
  </a>
</td></tr>
<tr><td class="day" colspan=2 style="border-top-width:0;">
  <a id="bg_preview_e2" class="event_box background" style="display:block;background-color:#ccffff;text-align:center;">
  $lang{bg_events_display_style7}
  </a>
</td></tr>
</table>
</div>


<div style="clear:both;border:solid 1px #cccccc;margin:5px;padding:5px;">


<div class="leftcol" style="">
<label class="optional_field" for="custom_stylesheet">$lang{custom_stylesheet}</label>
</div>
<div class="rightcol" style="white-space:nowrap;">
<input id="custom_stylesheet" name="custom_stylesheet" style="width:80%;" value = "$current_calendar{custom_stylesheet}"/>
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('custom_stylesheet','$lang{custom_stylesheet}')">$lang{help_on_this}</a></span>
</div>

<div class="leftcol" style="margin-bottom:0;">
<label class="optional_field" for="custom_template">$lang{custom_template}</label>
</div>
<div class="rightcol" style="white-space:nowrap;margin-bottom:0;">
<input id="custom_template" name="custom_template" style="width:80%;" value = "$current_calendar{custom_template}"/>
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('custom_template','$lang{custom_template}')">$lang{help_on_this}</a></span>
</div>
<br style="clear:both;"/>&nbsp;

</div>


<br style="clear:both;"/>&nbsp;

</div> <!-- end tab_area2-->



<div id="tab_area3" class="info_box" style="width:100%;display:none;position:relative;z-index:101;padding-top:20px;">

<div class="leftcol" style="">
<label class="optional_field" for="default_number_of_months">$lang{default_number_of_months}</label>
</div>
<div class="rightcol" style="white-space:nowrap;">
<input id="default_number_of_months" name="default_number_of_months" value = "$current_calendar{default_number_of_months}" style="width:5ex;vertical-align:bottom;"/>
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('default_number_of_months','$lang{default_number_of_months}')">$lang{help_on_this}</a></span>
</div>
<br style="line-height:0px;height:0px;clear:both;"/>

<div class="leftcol" style="margin-bottom:5ex;">
<label class="optional_field" for="max_months">$lang{max_months}</label>
</div>
<div class="rightcol" style="white-space:nowrap;">
<input id="max_months" name="max_months" style="width:5ex;" value = "$current_calendar{max_number_of_months}"/>
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('max_months','$lang{max_months}')">$lang{help_on_this}</a></span>
</div>
<br style="line-height:0px;height:0px;clear:both;"/>
p1

    if ($options{force_single_timezone} ne "1" || $current_calendar{id} eq "0")
    {
      $return_text .=<<p1;
<div class="leftcol" style="">
<label class="optional_field" for="gmtime_diff">$lang{timezone_offset}</label>
</div>
<div class="rightcol" style="white-space:nowrap;">
<input id="gmtime_diff" name="gmtime_diff" style="width:5ex;" value = "$current_calendar{gmtime_diff}"/>
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('gmtime_diff','$lang{timezone_offset}')">$lang{help_on_this}</a></span>
</div>
<br style="line-height:0px;height:0px;clear:both;"/>
p1
    }

    $return_text .=<<p1;

<div class="leftcol" style="">
<label class="optional_field" for="date_format">$lang{date_format}</label>
</div>
<div class="rightcol" style="white-space:nowrap;">
<input id="date_format" name="date_format" style="width:10ex" value = "$current_calendar{date_format}"/>
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('date_format','$lang{date_format}')">$lang{help_on_this}</a></span>
</div>
<br style="line-height:0px;height:0px;clear:both;"/>

<div class="leftcol" style="margin-bottom:5ex;">
<label class="optional_field" for="week_start_day">$lang{week_start_day}</label>
</div>
<div class="rightcol" style="white-space:nowrap;">
<select id="week_start_day" name="week_start_day">
p1
    
    for ($i=0;$i<7;$i++)
    {
      my $selected="";
      $selected = " selected" if ($i eq $current_calendar{week_start_day});
        $return_text .=<<p1;
<option value="$i"$selected>$day_names[$i]
p1
    }
    
    my $temp1;
    if ($current_calendar{preload_event_details} =~ /y/)
    {$temp1=" checked";}
    
    $return_text .=<<p1;
</select>
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('week_start_day','$lang{week_start_day}')">$lang{help_on_this}</a></span>
</div>
<br style="line-height:0px;height:0px;clear:both;"/>

<div class="leftcol" style="margin-bottom:0;">
<label class="optional_field" for="preload_event_details">$lang{preload_event_details}</label>
</div>
<div class="rightcol" style="white-space:nowrap;">
<input type="checkbox" id="preload_event_details" name="preload_event_details" value="yes" $temp1/>
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('preload_event_details','$lang{preload_event_details}')">$lang{help_on_this}</a></span>
</div>

<div class="leftcol" style="margin-bottom:0;">
<label class="optional_field" for="popup_window_size">$lang{popup_window_size1}</label>
</div>
<div class="rightcol" style="white-space:nowrap;margin-bottom:0;">
<input id="popup_window_size" name="popup_window_size" style="width:12ex;" value="$current_calendar{info_window_size}"/>
<span class="small_note" style="vertical-align:top;">$lang{popup_window_size2}</span>
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('popup_window_size','$lang{popup_window_size1}')">$lang{help_on_this}</a></span>
</div>

<br style="line-height:0px;height:0px;clear:both;"/>

</div>



<div class="info_box" style="width:100%;margin-top:40px;">
<br style="clear:both;"/>
p1
    if ($add_edit_cal_action eq "edit")
    {
      if ($options{disable_passwords} ne "1")
      {
      $return_text .=<<p1;
<div class="leftcol" style="white-space:nowrap;clear:both;margin-bottom:3ex;">
<label class="required_field" for="cal_password">$lang{cal_password}</label>
</div>
<div class="rightcol" style="white-space:nowrap;">
<input type="password" name="cal_password" id="cal_password" size=12 />
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('current_cal_password','$lang{cal_password}')">$lang{help_on_this}</a></span>
</div>
<div class="leftcol" style="white-space:nowrap;">
<label class="optional_field" for="new_cal_password">$lang{change_password}</label>
<br/>
<span class="small_note" ><a href="javascript:display_help('change_cal_password','$lang{change_password}')">$lang{help_on_this}</a></span>
</div>
<div class="rightcol" style="white-space:nowrap;">
<input type="password" name="new_cal_password" id="new_cal_password" size=12 />
<span class="small_note" style="vertical-align:top;">$lang{new_password} </span>
<br/>
<input type="password" name="repeat_new_cal_password" size=12 />
<span class="small_note" style="vertical-align:top;">$lang{repeat_new_password}</span>
</div>
p1

      }
      $return_text .=<<p1;

<div class="leftcol">
&nbsp;
</div>
<div class="rightcol" style="white-space:nowrap;">
<input name="update_cal_button" type=submit value = "$lang{update_cal_button}"/>
</div>

<div class="leftcol">
&nbsp;
</div>
<div class="rightcol" style="white-space:nowrap;">
<span class="info_box_text small_note" id="preview_warning">$lang{preview_warning}</span>
</div>

<br style="clear:both;"/>


<div style="float:left;text-align:left;">
<input name="del_cal_button" class="delete_button" type=submit value = "$lang{del_cal_button1}"
onclick="return confirm('$lang{del_cal_button2}');" />
<div id=delete_note>
<span class="small_note">
$lang{del_cal_button3} 
</span>
</div>
</div>

<br style="clear:both;">
<br style="clear:both;">

p1
    }
    elsif ($add_edit_cal_action eq "add")
    {
      $return_text .=<<p1;
<div class="leftcol" style="white-space:nowrap;">
<label class="required_field" for="new_cal_password">$lang{password}</label>
</div>
<div class="rightcol" style="white-space:nowrap;">
<input type="password" name="new_cal_password" id="new_cal_password" size=12 />
<span class="small_note" style="vertical-align:top;">$lang{choose_password} </span>&nbsp;
<span class="small_note" style="vertical-align:top;"><a href="javascript:display_help('new_cal_password','$lang{choose_password}')">$lang{help_on_this}</a></span>

<br/>
<input type="password" name="repeat_new_cal_password" size=12 />
<span class="small_note" style="vertical-align:top;">$lang{repeat_password} </span>
</div>

<div class="leftcol">
&nbsp;
</div>
<div class="rightcol" style="white-space:nowrap;">
<input name="update_cal_button" type=submit value = "$lang{add_calendar}"/>
</div>

<div class="leftcol">
&nbsp;
</div>
<div class="rightcol" style="white-space:nowrap;">
<span class="info_box_text small_note" id="preview_warning">$lang{preview_warning}</span>
</div>

<br style="clear:both;"/>
p1
    }

    $return_text .=<<p1;
</div>
p1
  }
  else  #a user added/edited/deleted a calendar--do checks and perform resulting action
  {
    my @results_messages;
    my $cal_id = $current_cal_id;    # need to validate cal id for add/edit


    my $cal_valid = 1;
    if ($q->param('del_cal_button') ne "")
    {
      #delete calendar
      
      &load_events("all");
      my $del_valid=1;
      
      #check password.
      
      if ($options{disable_passwords} ne "1")
      {
        $input_password = crypt($q->param('cal_password'), substr($q->param('cal_password'), 0, 2));
     
        if ($input_password ne $current_calendar{password} && $input_password ne $master_password)
        {
          $del_valid=0;
          push @results_messages,  "$lang{update_cal_error1}<b>$current_calendar{title}</b>";
        }
      }
      
      # prevent delete of primary calendar
      if ($cal_id eq "0")
      {
        $del_valid=0;
        push @results_messages, $lang{update_cal_error2};
      }
        
      if ($del_valid == 1)
      { #actually delete the calendar.
      
        # first, delete all its events
        my @deleted_event_ids;
        my @updated_event_ids;
        foreach $event_id (keys %events)
        {
          # if the event is only on one calendar, delete it
          if (scalar@{$events{$event_id}{cal_ids}} == 1)
          {
            if ($events{$event_id}{cal_ids}[0] eq $cal_id)
              {push @deleted_event_ids, $event_id;}
            else
              {next;}
          }
          else # otherwise, just remove that calendar from its cal_ids
          {
            my $index=0;
            foreach $temp_cal_id (@{$events{$event_id}{cal_ids}})
            {
              if ($temp_cal_id eq $cal_id)
              {
                break;
              }
              $index++;
            }
            splice @{$events{$event_id}{cal_ids}}, $index, 1;
              {push @updated_event_ids, $event_id;}

            
          }
        }
        &delete_events(\@deleted_event_ids);
        &update_events(\@updated_event_ids);
        
        # next, delete the calendar in question
        
        &delete_calendar($cal_id);

        # finally, delete any references in other calendars (background calendars)
        my @cals_to_update;
        foreach $calendar_id (sort {$a <=> $b} keys %calendars)
        {
          if ($calendars{$calendar_id}{local_background_calendars}{$cal_id} eq "1")
          {
            delete $calendars{$calendar_id}{local_background_calendars}{$cal_id};
            push @cals_to_update, $calendar_id;
          }
          if ($calendars{$calendar_id}{selectable_calendars}{$cal_id} eq "1")
          {
            delete $calendars{$calendar_id}{selectable_calendars}{$cal_id};
            push @cals_to_update, $calendar_id;
          }
        }
        &update_calendars(\@cals_to_update);
        my $temp = $lang{update_cal_error3};
        $temp =~ s/###title###/$current_calendar{title}/;
        push @results_messages, $temp;
      }
      
      # properly format errors, warnings
      my @messages = split ("\n",$cal_del_results);
      $cal_del_results="";
  
      foreach $message (@messages)
      {
        $message =~ s/(.*$lang{Warning})/<span class="warning">$1<\/span>/i;
        $message =~ s/(.*$lang{Error})/<span class="error">$1<\/span>/i;
        $cal_del_results .= "$message<br/>\n";
      }
  
      #$event_action_results = join "\n", @messages;
      $cal_del_results = "<ul style=\"font-size:small;\">$cal_del_results</ul>";
      
    }
    else  #the user added/updated an calendar
    {
      &load_new_calendars();

    
      #check all input fields for validity
      my $cal_title = $q->param('cal_title');
      my $cal_link = $q->param('cal_link');
      my $cal_details = $q->param('cal_details');
      
      my @local_background_calendars = $q->param('background_calendars');
      my @selectable_calendars = $q->param('selectable_calendars');
      my $list_background_calendars_together = $q->param('list_background_calendars_together');
      my $background_events_display_style = $q->param('background_events_display_style');
      my $background_events_fade_factor = $q->param('background_events_fade_factor');
      my $background_events_color = $q->param('background_events_color');
      my $new_calendars_automatically_selectable = "y" if ($q->param('new_calendars_automatically_selectable') =~ "y");
           
      my $allow_remote_calendar_requests = $q->param('allow_remote_calendar_requests');
      my $remote_calendar_requests_require_password = $q->param('remote_calendar_requests_require_password');
      my $remote_calendar_requests_password = $q->param('remote_calendar_requests_password');
      
      my $new_remote_calandars_xml = $q->param('new_remote_calandars_xml');
      my $calendar_events_color = $q->param('calendar_events_color');
      
      my $default_number_of_months = $q->param('default_number_of_months');
      my $max_number_of_months = $q->param('max_months');
      my $gmtime_diff = $q->param('gmtime_diff');
      my $date_format = $q->param('date_format');
      $date_format = lc $date_format;
      my $week_start_day = $q->param('week_start_day');
      my $preload_event_details = $q->param('preload_event_details');
      my $info_window_size = $q->param('popup_window_size');
      if ($info_window_size !~ /^\d{1,}x\d{1,}$/)
      {
        $cal_valid=0;
        my $temp=$lang{update_cal_error4};
        $temp =~ s/###size###/$info_window_size/;
        push @results_messages, $temp;
      }
      
      $preload_event_details = "no" if ($preload_event_details ne "yes");
      
      my $custom_template = $q->param('custom_template');
      $custom_template =~ s/http:\/\///g;
      
      my $custom_stylesheet = $q->param('custom_stylesheet');
      $custom_stylesheet =~ s/http:\/\///g;
      
      my $cal_password = $q->param('cal_password');
      my $new_cal_password = $q->param('new_cal_password');
      my $repeat_new_cal_password = $q->param('repeat_new_cal_password');

      $cal_title =~ s/\r//g;                 # some browsers sneak these in 
      $cal_link =~ s/\r//g;                  # some browsers sneak these in 
      $cal_details =~ s/\r//g;               # some browsers sneak these in 


      #check for required fields
      if ($cal_title eq "")
      {
        $cal_valid=0;
        push @results_messages, $lang{update_cal_error5};
      }
      
      #strip all html from label field
      if ($cal_title =~ m/<(.*)>/)
      {
        push @results_messages, $lang{update_cal_error6};
        $cal_title =~ s/<(.*)>//g;
      }
      
      $cal_link =~ s/http:\/\///g;  #strip http:// from link field



      #check for date format
      if ($date_format !~ /^(mm|dd|yy)\W(mm|dd|yy)\W(mm|dd|yy)$/ )
      {
        $cal_valid=0;
        push @results_messages, $lang{update_cal_error6_5};
      }

      if ($add_edit_cal_action eq "edit")
      {
        if ($options{disable_passwords} ne "1")
        {
          #this action is an edit of an existing calendar, so we need to make a replacement.
          if (!(defined $calendars{$cal_id}))
          {
            $cal_valid=0;
            push @results_messages, $lang{update_cal_error7};
          }
          else
          {
            #check password
            $input_password = crypt($cal_password, substr($cal_password, 0, 2));
 
            if ($input_password ne $calendars{$cal_id}{password} && $input_password ne $master_password)
            {
              $cal_valid=0;
               push @results_messages, "$lang{update_cal_error1} <b>$calendars{$cal_id}{title}</b>";
            }
          }
 
          #check for new password
          if ($new_cal_password ne "" || $repeat_new_cal_password ne "")
          {
            if ($new_cal_password ne $repeat_new_cal_password)
            {
              $cal_valid=0;
              push @results_messages, $lang{update_cal_error8};
            }
            else
            {
              $calendars{$cal_id}{password} = crypt($new_cal_password, substr($new_cal_password, 0, 2));
            }
          }
        }
        
        
        
        # check for gmtime_diff field
        if ($options{force_single_timezone} eq "1" && $cal_id ne "0")
        {
          $gmtime_diff = $calendars{0}{gmtime_diff}
        }

        
        # encrypt remote calendar password
        $remote_calendar_requests_password = crypt($remote_calendar_requests_password, substr($remote_calendar_requests_password, 0, 2));
        
        
        if ($cal_valid == 1)
        { # update calendar record
          my $xml_data = "";
          $calendars{$cal_id}{title} = $cal_title;
          $calendars{$cal_id}{details} = $cal_details;
          $calendars{$cal_id}{link} = $cal_link;
          $calendars{$cal_id}{new_calendars_automatically_selectable} = $new_calendars_automatically_selectable;
          $calendars{$cal_id}{list_background_calendars_together} = $list_background_calendars_together;
          $calendars{$cal_id}{calendar_events_color} = $calendar_events_color;
          $calendars{$cal_id}{background_events_display_style} = $background_events_display_style;
          $calendars{$cal_id}{background_events_fade_factor} = $background_events_fade_factor;
          $calendars{$cal_id}{background_events_color} = $background_events_color;
          $calendars{$cal_id}{default_number_of_months} = $default_number_of_months;
          $calendars{$cal_id}{max_number_of_months} = $max_number_of_months;
          $calendars{$cal_id}{gmtime_diff} = $gmtime_diff;
          $calendars{$cal_id}{date_format} = $date_format;
          $calendars{$cal_id}{week_start_day} = $week_start_day;
          $calendars{$cal_id}{preload_event_details} = $preload_event_details;
          $calendars{$cal_id}{info_window_size} = $info_window_size;
          $calendars{$cal_id}{custom_template} = $custom_template;
          $calendars{$cal_id}{custom_stylesheet} = $custom_stylesheet;
          $calendars{$cal_id}{allow_remote_calendar_requests} = $allow_remote_calendar_requests;
          $calendars{$cal_id}{remote_calendar_requests_require_password} = $remote_calendar_requests_require_password;
          $calendars{$cal_id}{remote_calendar_requests_password} = $remote_calendar_requests_password;

          
          # update local background calendars            
          foreach $local_background_calendar (keys %{$calendars{$cal_id}{local_background_calendars}})
            {delete $calendars{$cal_id}{local_background_calendars}{$local_background_calendar};}
          foreach $local_background_calendar (@local_background_calendars)
            {$calendars{$cal_id}{local_background_calendars}{$local_background_calendar} = 1;}

          #$debug_info .= "new remote calendars xml: $new_remote_calandars_xml\n";
          
          #delete existing remote background calendars
          
          foreach $current_remote_calendar_id (keys %{$current_calendar{remote_background_calendars}})
          {
            if ($q->param("delete_remote_calendar_$current_remote_calendar_id") ne "")
            {
              my $temp = $lang{get_remote_calendar5};
              $temp =~ s/###remote url###/$current_calendar{remote_background_calendars}{$current_remote_calendar_id}{url}/g;
              $temp =~ s/###remote id###/$current_calendar{remote_background_calendars}{$current_remote_calendar_id}{remote_id}/g;
              push @results_messages, $temp;
              
              delete $calendars{$current_cal_id}{remote_background_calendars}{$current_remote_calendar_id};
            }
          }
          
          
          
          # update remote background calendars
          unless ($new_remote_calandars_xml eq "")
          {
            my %new_remote_calendars = %{&xml2hash($new_remote_calandars_xml)};
            #$debug_info .= "$new_remote_calendars{remote_calendars}{remote_calendar}\n";
 
            my $new_remote_cal_id = &max(keys %{$calendars{$cal_id}{remote_background_calendars}}) + 1;
            $debug_info .= (scalar keys %{$calendars{$cal_id}{remote_background_calendars}})." remote calendars already\n";
            #$debug_info .= "new_remote_cal_id: $new_remote_cal_id\n";
            
            if ($new_remote_calendars{remote_calendars}{remote_calendar} =~ /array/i) # multiple remote background calendars
            {
              #$debug_info .= "multiple new remote calendars\n";
            
              foreach $temp (@{$new_remote_calendars{remote_calendars}{remote_calendar}})
              {
                my %new_remote_calendar = %{$temp};
                
                $found=0;
                foreach $current_remote_calendar_id (keys %{$current_calendar{remote_background_calendars}})
                {
                  #$debug_info .= "comparing $current_calendar{remote_background_calendars}{$current_remote_calendar_id}{url} with $new_remote_calendar{url}\n";

                  if ($current_calendar{remote_background_calendars}{$current_remote_calendar_id}{url} eq $new_remote_calendar{url} &&
                      $current_calendar{remote_background_calendars}{$current_remote_calendar_id}{type} eq $new_remote_calendar{type} &&
                      $current_calendar{remote_background_calendars}{$current_remote_calendar_id}{version} eq $new_remote_calendar{version} &&
                      $current_calendar{remote_background_calendars}{$current_remote_calendar_id}{password} eq $new_remote_calendar{password} &&
                      $current_calendar{remote_background_calendars}{$current_remote_calendar_id}{remote_id} eq $new_remote_calendar{remote_id})
                        {$found=1;}
                }
                if ($found==0)
                {
                  $calendars{$cal_id}{remote_background_calendars}{$new_remote_cal_id}{url} = $new_remote_calendar{url};
                  $calendars{$cal_id}{remote_background_calendars}{$new_remote_cal_id}{type} = $new_remote_calendar{type};
                  $calendars{$cal_id}{remote_background_calendars}{$new_remote_cal_id}{version} = $new_remote_calendar{version};
                  $calendars{$cal_id}{remote_background_calendars}{$new_remote_cal_id}{password} = $new_remote_calendar{password};
                  $calendars{$cal_id}{remote_background_calendars}{$new_remote_cal_id}{remote_id} = $new_remote_calendar{remote_id};
                  $new_remote_cal_id++;
                }
                else
                {
                  my $temp = $lang{get_remote_calendar4};
                  $temp =~ s/###remote url###/$new_remote_calendar{url}/g;
                  $temp =~ s/###remote id###/$new_remote_calendar{remote_id}/g;
                  push @results_messages, $temp;
                }
   
                #$debug_info .= "remote calendar: $new_remote_calendar{url}\n";
                #$debug_info .= "type: $new_remote_calendar{type}\n";
              }
            }
            else # single remote background calendar
            {
              # check against existing remote background calendars.
            
              my %new_remote_calendar = %{$new_remote_calendars{remote_calendars}{remote_calendar}};
            
              $found=0;
              foreach $current_remote_calendar_id (keys %{$current_calendar{remote_background_calendars}})
              {
                #$debug_info .= "comparing $current_calendar{remote_background_calendars}{$current_remote_calendar_id}{url} with $new_remote_calendar{url}\n";
                if ($current_calendar{remote_background_calendars}{$current_remote_calendar_id}{url} eq $new_remote_calendar{url} && 
                    $current_calendar{remote_background_calendars}{$current_remote_calendar_id}{type} eq $new_remote_calendar{type} &&
                    $current_calendar{remote_background_calendars}{$current_remote_calendar_id}{version} eq $new_remote_calendar{version} &&
                    $current_calendar{remote_background_calendars}{$current_remote_calendar_id}{password} eq $new_remote_calendar{password} &&
                    $current_calendar{remote_background_calendars}{$current_remote_calendar_id}{remote_id} eq $new_remote_calendar{remote_id})
                      {$found=1;}
              }
              if ($found==0)
              {
                $calendars{$cal_id}{remote_background_calendars}{$new_remote_cal_id}{url} = $new_remote_calendar{url};
                $calendars{$cal_id}{remote_background_calendars}{$new_remote_cal_id}{type} = $new_remote_calendar{type};
                $calendars{$cal_id}{remote_background_calendars}{$new_remote_cal_id}{version} = $new_remote_calendar{version};
                $calendars{$cal_id}{remote_background_calendars}{$new_remote_cal_id}{password} = $new_remote_calendar{password};
                $calendars{$cal_id}{remote_background_calendars}{$new_remote_cal_id}{remote_id} = $new_remote_calendar{remote_id};
              }
              else
              {
                my $temp = $lang{get_remote_calendar4};
                  $temp =~ s/###remote url###/$new_remote_calendar{url}/g;
                  $temp =~ s/###remote id###/$new_remote_calendar{remote_id}/g;
                push @results_messages, $temp;
              }
            }
          }
                    
          #$calendars{$cal_id}{remote_background_calendars} = $remote_calendar_requests_password;

            
          # update selectable calendars            
          foreach $selectable_calendar (keys %{$calendars{$cal_id}{selectable_calendars}})
            {delete $calendars{$cal_id}{selectable_calendars}{$selectable_calendar};}
          foreach $selectable_calendar (@selectable_calendars)
            {$calendars{$cal_id}{selectable_calendars}{$selectable_calendar} = 1;}
        
          # make sure the calendar can select itself.
          if (scalar keys %{$calendars{$cal_id}{selectable_calendars}} > 0)
            {$calendars{$cal_id}{selectable_calendars}{$cal_id} = 1;}
        }
        
        if ($cal_valid == 1)
        { #all checks successful, add/update calendar!
  
          &update_calendar($cal_id);
          push @results_messages, "<b>$calendars{$current_cal_id}{title}</b> $lang{update_cal_success}";
        }
        else
        {$cal_add_results .= $lang{update_cal_failure};}

      }
      else  #if we need to create a completely new record
      {     
        #check new password
        if ($options{disable_passwords} ne "1")
        {
          if ($new_cal_password ne $repeat_new_cal_password)
          {
            $cal_valid=0;
            push @results_messages, $lang{update_cal_error9};
          }
          elsif ($new_cal_password eq "" || $repeat_new_cal_password eq "" )
          {
            $cal_valid=0;
            push @results_messages, $lang{update_cal_error10};
          }
          else
          {
            $input_password = crypt($new_cal_password, substr($new_cal_password, 0, 2));
          }
        }
        
        my $new_cal_id;
        
        if ($cal_valid == 1)
        {
          $new_cal_id = $max_new_cal_id + 1;
          
          $new_calendars{$new_cal_id}{id} = $new_cal_id;
          $new_calendars{$new_cal_id}{title} = $cal_title;
          $new_calendars{$new_cal_id}{details} = $cal_details;
          $new_calendars{$new_cal_id}{link} = $cal_link;
          $new_calendars{$new_cal_id}{list_background_calendars_together} = $list_background_calendars_together;
          $new_calendars{$new_cal_id}{calendar_events_color} = $calendar_events_color;
          $new_calendars{$new_cal_id}{background_events_fade_factor} = $background_events_fade_factor;
          $new_calendars{$new_cal_id}{background_events_color} = $background_events_color;
          $new_calendars{$new_cal_id}{default_number_of_months} = $default_number_of_months;
          $new_calendars{$new_cal_id}{max_number_of_months} = $max_number_of_months;
          $new_calendars{$new_cal_id}{gmtime_diff} = $gmtime_diff;
          $new_calendars{$new_cal_id}{date_format} = $date_format;
          $new_calendars{$new_cal_id}{week_start_day} = $week_start_day;
          $new_calendars{$new_cal_id}{info_window_size} = $info_window_size;
          $new_calendars{$new_cal_id}{custom_template} = $custom_template;
          $new_calendars{$new_cal_id}{custom_stylesheet} = $custom_stylesheet;
          $new_calendars{$new_cal_id}{password} = $input_password;
          $new_calendars{$new_cal_id}{update_timestamp} = $rightnow;
          $new_calendars{$new_cal_id}{allow_remote_calendar_requests} = $allow_remote_calendar_requests;
          $new_calendars{$new_cal_id}{remote_calendar_requests_require_password} = $remote_calendar_requests_require_password;
          $new_calendars{$new_cal_id}{remote_calendar_requests_password} = $remote_calendar_requests_password;
          
          # local background calendars            
          foreach $local_background_calendar (@local_background_calendars)
            {$new_calendars{$new_cal_id}{local_background_calendars}{$local_background_calendar} = 1;}
            
          # selectable calendars            
          foreach $selectable_calendar (@selectable_calendars)
            {$new_calendars{$new_cal_id}{selectable_calendars}{$selectable_calendar} = 1;}
        }  
          
        # check for refreshes!
        if ($cal_valid == 1)
        {
          if ($new_calendars{$new_cal_id}{title} eq $latest_new_calendar{title} &&
              $new_calendars{$new_cal_id}{details} eq $latest_new_calendar{details} &&
              $new_calendars{$new_cal_id}{link} eq $latest_new_calendar{link})
          {
            $cal_valid = 0;
            push @results_messages, $lang{update_cal_dup};
          }
        }
          
        if ($cal_valid == 1)  #all checks successful, add calendar!
        { 
          &add_new_calendar($new_cal_id);
          
          my $new_cal_details = &generate_cal_details($new_calendars{$new_cal_id});
          $new_cal_details =~ s/<a.+Delete this.+<\/a>//;
          $new_cal_details =~ s/Link directly.+<\/a>//s;

          if ($options{new_calendar_request_notify} ne "")
          {
            my $body = <<p1;
$lang{add_cal_email_notify1}
  
$new_cal_details  
  
<a href="$script_url/$name?active_tab=2&add_edit_cal_action=view_pending$consistent_parameter_string">$lang{add_cal_success3}</a>

p1
            &send_email($options{new_calendar_request_notify}, $options{reply_address}, $options{reply_address}, $lang{add_cal_email_notify2}, $body);
          }

          my $temp = $lang{add_cal_success1};  # add successful
          if ($add_edit_cal_action eq "edit")
            {$temp = $lang{add_cal_success4}}; # update successful
        
          $cal_add_results .= <<p1;
<div style="text-align:left;">
<p style="font-weight:bold;">
$temp
</p>

<div class="info_box">
$new_cal_details
</div>

<p style="margin-top:1em;">
$lang{add_cal_success2}
</p>

<ul>
<li><a href="$script_url/$name?active_tab=2&add_edit_cal_action=view_pending$consistent_parameter_string">$lang{add_cal_success3}</a>
</ul>
</div>
p1
          close FH;
        }
        else
        {
          push @results_messages, $lang{add_cal_fail1};
        }
      }
      close FH;
    }
    # properly format errors & warnings
    my $message_results="";
    foreach $results_message (@results_messages)
    {
      $results_message =~ s/(.*$lang{Warning})/<span class="warning">$1<\/span>/i;
      $results_message =~ s/(.*$lang{Error})/<span class="error">$1<\/span>/i;
      $message_results .= "<li>$results_message</li>\n";
    }
  
    $cal_add_results = "<ul style=\"font-size:small;\">$message_results</ul>$cal_add_results";
  }
    
  $return_text .=<<p1;
<div style="text-align:left;">
$cal_add_results
$cal_del_results
</div>
p1
  return $return_text;
} #********************end add_edit_calendars code*****************************


sub view_pending_calendars
{
  my $return_text = "";
  
  if ($q->param('approve_cal_button') eq "")  #view pending calendars main screen
  {    
    $cal_details ="";
    $shared_cal_select_size = scalar keys %calendars;

    $return_text.=<<p1;
<p class="cal_title">
$lang{view_pending_calendars1}
</p>
p1

       
    if (scalar keys %new_calendars == 0)
    {
      $return_text.=<<p1;
<p class="optional_field">
$lang{view_pending_calendars2}
</p>
p1
    }
    else
    {
      $return_text.=<<p1;
<form name="pending_calendars_form" action="">
<input type="hidden" name="active_tab" value="2">
<input type="hidden" name="add_edit_cal_action" value="view_pending">
<input type="hidden" name="cal_id" value="$current_cal_id">
<input type="hidden" name="cal_start_month" value="$cal_start_month">
<input type="hidden" name="cal_start_year" value="$cal_start_year">
<input type="hidden" name="cal_num_months" value="$cal_num_months">
<input type="hidden" name="display_type" value="$display_type">
<input type="hidden" name="special_action" value="$special_action">
<input type="hidden" name="theme_url" value="$theme_url">

p1
    
      foreach $new_cal_id (keys %new_calendars)
      {
        my $new_cal_details = &generate_cal_details($new_calendars{$new_cal_id});
        $new_cal_details =~ s/<a.+Delete this.+<\/a>//;
        $new_cal_details =~ s/Link directly.+<\/a>//s;
#Link directly to this calendar:<br/>
#<a href="$script_url/$name?cal_id=$calendar{id}">$script_url/$name?cal_id=$calendar{id}</a>    

        
      
        $return_text.=<<p1;
<div class="info_box" style="float:left;text-align:left;width:40%;margin:10px;clear:both;">
$new_cal_details
</div>
<div style="float:left;text-align:left;margin:10px;">
<br/>
<input type="radio" name="new_cal_$new_cal_id" value="approve"/><span class="optional_field">$lang{view_pending_calendars3}</span><br/><br/>
<input type="radio" name="new_cal_$new_cal_id" value="delete"/><span class="optional_field">$lang{view_pending_calendars4}</span><br/>
</div>
<br style="clear:both;"/>
p1
      }
      $return_text.=<<p1;
<div style="clear:both;"> 

<label for="main_password" class="optional_field">
$calendars{0}{title} Password:
</label>
<input type=password id="main_password" name = "main_password" size=10>
<br/>
<input type=submit name="approve_cal_button" value = "$lang{view_pending_calendars5}">
</form>
</div>

p1
    }
  }
  else  #view pending calendars approve/delete results screen
  {
    my @pending_calendars_to_delete;
    my @calendars_to_add;
    my @calendars_to_update;
    
    $cal_details ="";
    $shared_cal_select_size = scalar keys %calendars;

    $return_text.=<<p1;
<p class="cal_title">
$lang{view_pending_calendars6}
</p>
p1

    #check password
    $input_password = crypt($q->param('main_password'), substr($q->param('main_password'), 0, 2));
    
    if ($options{disable_passwords} ne "1")
    {
      if ($input_password ne $master_password)
      {
        $return_text .=<<p1;
<ul>
<li>$lang{view_pending_calendars7}</li>
</ul>
p1
        return $return_text;
      }
    }
    
    #go through each new calendar in the new calendars file--take appropriate action
    foreach $new_cal_id (keys %new_calendars)
    {
      my $new_cal_details = &generate_cal_details($new_calendars{$new_cal_id});

      if ($q->param("new_cal_$new_cal_id") eq "approve")
      {
        #calculate new id # for the new calendar
        $max_cal_id+=1;
        
        foreach $cal_id (keys %calendars)
        {
          if ($calendars{$cal_id}{new_calendars_automatically_selectable} =~ "y")
          {
            $calendars{$cal_id}{selectable_calendars}{$max_cal_id} = 1;
            push @calendars_to_update, $cal_id;
          }
        }
        
        $calendars{$max_cal_id} = $new_calendars{$new_cal_id};
        $calendars{$max_cal_id}{id} = $max_cal_id;
        
        # make sure the calendar can select itself.
        if (scalar keys %{$calendars{$max_cal_id}{selectable_calendars}} > 0)
          {$calendars{$max_cal_id}{selectable_calendars}{$max_cal_id} = 1;}
      
        delete $new_calendars{$new_cal_id};
        push @pending_calendars_to_delete, $new_cal_id;
        push @calendars_to_add, $max_cal_id;

        $approve_or_delete_result = $lang{view_pending_calendars8};
      }
      elsif ($q->param("new_cal_$new_cal_id") eq "delete")
      {
        delete $new_calendars{$new_cal_id};
        push @pending_calendars_to_delete, $new_cal_id;
        $approve_or_delete_result = $lang{view_pending_calendars9};
      }
      else
      {
        $approve_or_delete_result = $lang{view_pending_calendars10};
      }
      
      
      $new_cal_details =~ s/<a.+Delete this.+<\/a>//;
      $new_cal_details =~ s/Link directly.+<\/a>//s;
      
      $return_text .= <<p1;
<div style="float:left;clear:left;width:90%;">
<div class="info_box" style="text-align:left;width:40%;margin:10px;clear:both;float:left;">
$new_cal_details
</div>
<div style="text-align:left;margin:10px;float:left;">
<br/>
$approve_or_delete_result
</div>
</div>
p1
    }
    
    &delete_pending_calendars(\@pending_calendars_to_delete);
    &add_calendars(\@calendars_to_add);
    &update_calendars(\@calendars_to_update);
  }
  
  $return_text.=<<p1;
<br style="clear:both;"/>
p1
  
  return $return_text;
  
} #********************end view_pending_calendars code*****************************


sub do_calendar_list_view()
{
  &normalize_timezone();
  my $return_text = "";  

  my $temp1="";
  my $temp2="";
  if ($q->param('custom_calendar') != 1)
  {
    $temp1 .=<<p1;
<a href="$script_url/$name?cal_id=$current_cal_id&amp;display_type=$display_type&amp;cal_start_month=$previous_cal_start_month&amp;cal_start_year=$previous_cal_start_year&amp;cal_num_months=$cal_num_months ">$prev_string</a>
p1
    $temp2 .=<<p1;
<a href="$script_url/$name?cal_id=$current_cal_id&amp;display_type=$display_type&amp;cal_start_month=$next_cal_start_month&amp;cal_start_year=$next_cal_start_year&amp;cal_num_months=$cal_num_months">$next_string</a>
p1
  }
  
  if ($cal_num_months> 1)
  {
    $cal_title_string .=<<p1;
$months[$cal_start_month] $cal_start_year  - $months[$cal_end_month] $cal_end_year
p1
  }
  else
  {
    $cal_title_string .=<<p1;
$months[$cal_start_month] $cal_start_year
p1
  }
  
  # previous and next month(s) link
  $return_text .=<<p1;
<div style="text-align:center;white-space:nowrap;">
$temp1
<span class="cal_title" style="margin-left:3em;margin-right:3em;">
$cal_title_string
</span>
$temp2
</div>


<div style="clear:both;margin:auto;">
p1

  if ($display_type == 1) #list view
  {
    $return_text .= &generate_list($cal_start_month, $cal_start_year, $cal_end_month, $cal_end_year);
  }
  else  #calendar view
  {
    $return_text .= &generate_calendar($cal_start_month, $cal_start_year, $cal_end_month, $cal_end_year);
  }
    $return_text .=<<p1;
</div>
p1

  return $return_text;

}  ###############end do_calendar_list_view ###################


sub add_edit_events()
{
  my $temp="<link rel=\"stylesheet\" href=\"$theme_url/color_select.css\" type=\"text/css\">";
  $html_output =~ s/<head>/<head>\n$temp\n/;

  my $return_text = "";
  $add_edit_event = "add" if ($add_edit_event eq "");

  if ($q->param('add_event_button') eq "" && $q->param('del_event_button') eq "")  #add event main screen
  {
    $add_edit_string = $lang{add_or_edit1};
    $event_details ="";
    
    $event_start_date = $current_calendar{date_format};
    
    if ($q->param('add_date_timestamp') eq "" || $q->param('add_date_timestamp') =~ /\D/)    # no date supplied--generic add event
    {  # no date supplied--generic add event
      if ($cal_start_year ne "")    
      {
        $event_start_date =~ s/yy/$cal_start_year/;
      }
      else
      {
        $event_start_date =~ s/yy/$rightnow_year/;
      }
    }
    else  # add event on a particular date -- calculate date
    {
      my @event_start_date_array = gmtime $q->param('add_date_timestamp');
      my $mm = $event_start_date_array[4]+1;
      my $md = $event_start_date_array[3];
      my $yy = $event_start_date_array[5]+1900;
      
      $event_start_date =~ s/mm/$mm/;
      $event_start_date =~ s/dd/$md/;
      $event_start_date =~ s/yy/$yy/;
    }
    
    $recur_end_date = $current_calendar{date_format};
    $recur_end_date =~ s/mm/12/;
    $recur_end_date =~ s/dd/31/;
    $recur_end_date =~ s/yy/$rightnow_year/;

    $event_days = "1";
    $event_icon = "blank";
    my %current_event;
    
    my $unit_number_text="";
    if ($add_edit_event eq "add")
    {
      $event_unit_number = "";
    }
    elsif ($add_edit_event eq "edit")
    {
      $add_edit_string = $lang{add_or_edit2};

      #select the appropriate event to edit
      %current_event = %{$events{$q->param('evt_id')}};
      @current_cal_ids = @{$current_event{cal_ids}};
      %current_calendar = %{$calendars{$current_cal_ids[0]}};
      #$cal_title=$calendars{$current_event{cal_id}}{title};
      
      $event_name=$current_event{title};
      $event_details=$current_event{details};
      
      $event_start_date = $current_calendar{date_format};
      my @temp_date = gmtime($current_event{start});
      $temp_date[5] += 1900;
      $temp_date[4] += 1;

      $event_start_date =~ s/mm/$temp_date[4]/;
      $event_start_date =~ s/dd/$temp_date[3]/;
      $event_start_date =~ s/yy/$temp_date[5]/;

      $event_days=$current_event{days};
      $event_icon = $current_event{icon};
      $event_bgcolor = $current_event{bgcolor};
      $event_unit_number = $current_event{unit_number};
      $unit_number_text = $event_unit_number;
      $unit_number_text =~ s/(\d)/<img src="$graphics_url\/unit_number_patch_$1_16x10.gif" alt="" border="0" vspace=0 hspace=0>/g;
    }
      
    $return_text .=<<p1;
<!-- color_select_box 0-->
<div id="color_select_box0" class="color_select_box" style="display:none;">
<!-- cursors -->
<div id="sv_crosshair_horiz_cursor0" class="sv_crosshair_horiz_cursor" style="visibility:hidden;">
</div>
<div id="sv_crosshair_center_cursor0" class="sv_crosshair_center_cursor" style="visibility:hidden;">
</div>
<div id="sv_crosshair_vert_cursor0" class="sv_crosshair_vert_cursor" style="visibility:hidden;">
</div>
<!-- /cursors -->
<div id="sv_select_box_bg0" class="sv_select_box" style="background-color:#0000ff;">
<div id="sv_select_box0" onMouseDown="cs0.sv_select_box_focus=true;color_select_update();"
                      onMouseUp="cs0.sv_select_box_focus=false;color_select_update();"
 style="line-height:256px;height:256px;filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true src='$graphics_url/sv_blend.png')">
<br/>
</div>
</div>
<div id="h_select_box0" class="h_select_box" style="margin-left:5px;background-image:url($graphics_url/hue_blend.png)" 
 onMouseDown="cs0.h_select_box_focus=true;color_select_update()" onMouseUp="cs0.h_select_box_focus=false;color_select_update();">
<div id="hue_cursor0" class="hue_cursor" style="visibility:hidden;">
</div>
</div>
<div id="color_box0" class="color_box">
<div id="color_value_box0" class="color_value_box">
</div>
</div>
</div> 
<!-- end color_select_box 0-->    

<p class="cal_title" style="text-align:center;">
$add_edit_string
</p>

<div class="info_box" style="text-align:center;margin-bottom:2em;float:left;">
<span class="optional_field">$lang{fields_text1} <span class="required_field">$lang{fields_text2}</span> $lang{fields_text3}</span>
</div>

<div style="clear:both;width:90%;text-align:left;white-space:nowrap;clear:left;">
<a id="tab0" href="javascript:tab_show(0)" class="info_box_tab active">$lang{add_edit_events_tab0}</a>
<a id="tab1" href="javascript:tab_show(1)" class="info_box_tab">$lang{add_edit_events_tab1}</a>
</div>

<div id="tab_area0" class="info_box" style="width:100%;position:relative;z-index:101;padding-top:1em;margin-bottom:1em;">
p1
    my @selectable_cal_ids;
 
    if ($options{all_calendars_selectable})
    {
      @selectable_cal_ids = keys %calendars;
    }
    else
    {
      @selectable_cal_ids = keys %{$current_calendar{selectable_calendars}}
    }
    
    if ($add_edit_event eq "edit" || scalar keys %{$current_calendar{selectable_calendars}} == 0)  # force event calendar
    {
      $return_text .=<<p1;
<input type="hidden" name="evt_cal_id" value="$current_calendar{id}">
<div class="leftcol">
<span class="optional_field">$lang{event_calendar}</span>
</div>
<div class="rightcol" style="padding-left:.5em;">
$current_calendar{title}
</div>
p1
    }
    else  # user can select event calendar
    {
      $return_text .=<<p1;
<div class="leftcol">
<span class="required_field">$lang{event_calendar}</span>
</div>
<div class="rightcol">
<select name="evt_cal_id">
p1
      
      foreach $cal_ref_id (sort {$calendars{$a}{title} cmp $calendars{$b}{title}} @selectable_cal_ids)
      {
        my $selected = "";
        if ($cal_ref_id eq $current_cal_id)
          {$selected = " selected";}
        $return_text .=<<p1;
<option value = "$cal_ref_id"$selected>$calendars{$cal_ref_id}{title}
p1
      }

    $return_text .=<<p1;
</select>
<span class="small_note"><a href="javascript:display_help('evt_cal_id','$lang{event_calendar}')">$lang{help_on_this}</a></span>
</div>
p1
    }
    
    if ($options{multi_calendar_event_mode} > 0 && $add_edit_event eq "edit")
    {
      $return_text .=<<p1;
<div class="leftcol">
<span class="optional_field">$lang{event_other_calendars}</span>
</div>
<div class="rightcol" style="padding-left:.5em;">
<select multiple name="evt_other_cal_ids">
p1
    
      foreach $cal_ref_id (sort {$calendars{$a}{title} cmp $calendars{$b}{title}} @selectable_cal_ids)
      {
        my $selected = "";
        if ($cal_ref_id eq $current_event{cal_ids}[0])
          {next;}
          
        foreach $selected_cal_id (@{$events{$current_event_id}{cal_ids}})
        {
          if ($cal_ref_id eq $selected_cal_id)
          {
            $selected = " selected";
            last;
          }
        }
          
        $return_text .=<<p1;
<option value = "$cal_ref_id"$selected>$calendars{$cal_ref_id}{title}
p1
      }

    $return_text .=<<p1;
</select>
<span class="small_note"><a href="javascript:display_help('evt_other_cal_ids','$lang{event_other_calendars}')">$lang{help_on_this}</a></span>
</div>
p1
    }
    
    my $all_day_event_checked = "";
    
    if ($options{new_events_all_day})
      {$all_day_event_checked = "checked";}
    
    my $event_start_time = $options{default_event_start_time};
    my $event_end_time = $options{default_event_end_time};
    
    if ($add_edit_event eq "edit")
    {
      $all_day_event_checked = "checked";
      if ($current_event{all_day_event} ne "1")
        {$all_day_event_checked = "";}
      $event_start_time = &formatted_time($current_event{start},"hh:mm ampm");
      
      $event_end_time = &formatted_time($current_event{end},"hh:mm ampm");
      $event_end_time = "" if ($current_event{no_end_time} eq "1");
    }
    
    
    
    my $all_day_event_toggle0_style = "display:none;";
    if ($all_day_event_checked ne "checked")
    {
      $all_day_event_toggle0_style = "";
    }
    
    $return_text .=<<p1;
<div class="leftcol" style="">
<label class="required_field" for="evt_title">$lang{event_title}</label>
</div>
<div class="rightcol" style="white-space:nowrap;">
<input id="evt_title" name="evt_title" style="width:50%;" value = "$current_event{title}">
<span class="small_note" ><a style="vertical-align:top;" href="javascript:display_help('evt_title','$lang{event_title}')">$lang{help_on_this}</a></span>
</div>

<div class="leftcol" style="">
<label class="optional_field" for="evt_details">$lang{event_details}</label>
<br/>
<span class="small_note" style="vertical-align:top;" ><a href="javascript:display_help('evt_details','$lang{event_details}')">$lang{help_on_this}</a>&nbsp;&nbsp;</span>
</div>
<div class="rightcol" style="white-space:nowrap;">
<textarea name="evt_details" id="evt_details" rows=10 cols=0 style="width:100%;">$current_event{details}</textarea>
</div>

<div class="leftcol" style="margin-bottom:0;">
<label class="required_field" for="evt_start_date">$lang{event_start}</label>
</div>
<div class="rightcol" style="margin-bottom:0;white-space:nowrap;">
<input id="evt_start_date" name="evt_start_date" style="width:7em;" value = "$event_start_date">
</div>

<div class="leftcol" style="">
<label class="required_field" for="evt_days">$lang{event_length}</label>
</div>
<div class="rightcol" style="white-space:nowrap;">
<input id="evt_days" name="evt_days" style="width:2em;" value = "$event_days">
<input type="checkbox" id="all_day_event" name="all_day_event" value="1"$all_day_event_checked onChange="all_day_event_toggle(this.checked);">
<label class="optional_field" for="all_day_event">$lang{all_day_event}</label>
</div>

<div id="all_day_event_toggle0" style="$all_day_event_toggle0_style">
<div class="leftcol" style="margin-bottom:0;">
<label class="required_field" for="evt_start_time">$lang{event_start_time}</label>
</div>
<div class="rightcol" style="margin-bottom:0;white-space:nowrap;">
<input id="evt_start_time" name="evt_start_time" style="width:7em;" value = "$event_start_time">
</div>
<div class="leftcol" style="margin-bottom:0;">
<label class="optional_field" for="evt_end_time">$lang{event_end_time}</label>
</div>
<div class="rightcol" style="margin-bottom:0;white-space:nowrap;">
<input id="evt_end_time" name="evt_end_time" style="width:7em;" value = "$event_end_time">
</div>
</div>



p1

    $return_text .=<<p1;
<div style="float:right;width:20%;">
<div class="icon_preview_box" style="float:left;">
<div id="icon_preview" style="text-align:cebter;">
<img src="$icons_url/$event_icon\l_32x32.gif" alt='event icon' border="0" vspace=0 hspace=0>
</div>
p1
    if ($options{unit_number_icons} == 1)
    {
      $return_text .=<<p1;
<div id="unit_number_preview" style="margin:3px;">
$unit_number_text
</div>
p1
    }
    $return_text .=<<p1;
</div>
</div>
p1


    $return_text .=<<p1;
<div class="leftcol" style="margin-bottom:0;">
<label class="optional_field" for="evt_icon">$lang{event_icon}</label>
</div>
<div class="rightcol" style="margin-bottom:0;white-space:nowrap;width:auto;">
<select name="evt_icon" id="evt_icon" onChange="update_preview_icon()">
p1
    @icon_menus_data = &assemble_icon_menus($event_icons_menu);
    $icon_menu_index_number = 0;
    $return_text .= &generate_flat_icon_menus(\@icon_menus_data, $event_icon);

    $return_text .=<<p1;
</select>
</div>
p1
    if ($options{unit_number_icons} == 1)
    {
      $return_text .=<<p1;
<div class="leftcol" style="margin-bottom:0;">
<label class="optional_field" for="unit_number">$lang{event_unit_number} </label>
</div>
<div class="rightcol" style="margin-bottom:0;white-space:nowrap;width:40%">
<input id="unit_number" name="unit_number" style="width:6ex;" value = "$event_unit_number" onKeyUp="update_preview_icon()">
</div>
p1
    }
    
    $return_text .=<<p1;
<div class="leftcol" style="">
<label class="optional_field" for="cal_details">$lang{event_background_color}</label>
</div>
<div class="rightcol" style="white-space:nowrap;width:40%;">
<input name="dummy" value="" size=1 style="display:none;">
<select name="evt_bgcolor" onchange="update_bg_color_select_box()" style="width:7em;">
p1
    my $custom_color=1;

    foreach $temp (@event_bgcolors)
    {
      %possible_bgcolor = %{$temp};
      my $selected="";
      if ($possible_bgcolor{color} eq "$event_bgcolor")  #default
      {
        $custom_color=0;
        $selected=" selected";
      }
      my $description = "";
      if ($options{show_event_background_color_descriptions})
        {$description = $possible_bgcolor{title}}
      
      $return_text .=<<p1;
<option value = "$possible_bgcolor{color}" $selected>$description
p1
    }
    
    my $color_select_icon_style="visibility:hidden;";
    if ($custom_color == 1 && $add_edit_event eq "edit")
    {
      $color_select_icon_style="";
      $return_text .=<<p1;
<option value = "$event_bgcolor" selected>$lang{event_background_colorcustom}
p1
    }
    else
    {
      $return_text .=<<p1;
<option id="custom_evt_color" value = "#ffffff">$lang{event_background_colorcustom}
p1
    }
    
    
    $return_text .=<<p1;
</select>
<span id="color_select_icon0" class="color_select_icon" style="$color_select_icon_style vertical-align:top;background-image:url($graphics_url/color_select_icon.gif);" onClick="cs_init();cs0.toggle_color_select();">&nbsp;&nbsp;&nbsp;&nbsp;</span>

</div>
<br style="clear:both;"/>
<br style="clear:both;"/>

</div>



<div id="tab_area1" class="info_box" style="width:100%;display:none;position:relative;z-index:101;padding-top:1em;text-align:left;">
p1

    if ($add_edit_event eq "edit")
    {
      if ($current_event{series_id} ne "")
      {
        $return_text .=<<p1;
<input type="hidden" name="recurring_event" value="1">       
<input type="hidden" name="series_id" value="$current_event{series_id}">       
        
<div style="text-align:center;">
$lang{recurring_event_edit1}
</div>

<div class="leftcol" style="margin-bottom:1em;">
<span class="small_note"><a href="javascript:display_help('recurring_event_change_all','$lang{recurring_event_change_all1}')">$lang{help_on_this}</a>&nbsp;&nbsp;</span>
</div>
<div class="rightcol" style="margin-bottom:1em;white-space:nowrap;">
<input type="checkbox" name="all_in_series" value="1" onClick="recur_edit_toggle()"> 
<label class="optional_field">$lang{recurring_event_change_all1}</label>
<div class="small_note style="margin-left:17px;"">$lang{recurring_event_change_all2}</div>
</div>
p1
      }
  
      else
      {
        $return_text .=<<p1;
$lang{recurrence_not_allowed}
p1
      }
        $return_text .=<<p1;
<br style="clear:both;"/>
p1

    }
    else
    {
      $return_text .=<<p1;
<div class="leftcol" style="margin-bottom:1em;">
<span class="small_note"><a href="javascript:display_help('recurring_event','$lang{recurring_event}')">$lang{help_on_this}</a>&nbsp;&nbsp;</span>
</div>
<div class="rightcol" style="margin-bottom:1em;white-space:nowrap;">
<input type="checkbox" name="recurring_event" value="1" onclick="javascript:recur_toggle();"> 
<label class="optional_field">$lang{recurring_event}</label>
</div>

<div class="leftcol" style="margin-bottom:1em;vertical-align:middle;">
<span class="fit_event">
<i>$lang{recurrence_type}</i><br/>
<span class="small_note"><a href="javascript:display_help('recurrence_type','$lang{recurrence_type}')">$lang{help_on_this}</a></span>
</span>
</div>
<div class="rightcol" style="margin-bottom:1em;white-space:nowrap;">
<input type="radio" name="recurrence_type" value="same_day_of_month" disabled checked onclick="recurrence_type_update()"> 
<span class="optional_field">$lang{same_day_of_month}</span>
<br/>
<input type="radio" name="recurrence_type" value="same_day_of_week" disabled onclick="recurrence_type_update()"> 
<span class="optional_field">
$lang{same_weekday}
</span>
<select name = "weekday_of_month_type" disabled>
<option value = "every_week">$lang{on_every_week}
<option value = "only_first_week">$lang{on_first_week}
<option value = "only_second_week">$lang{on_second_week}
<option value = "only_third_week">$lang{on_third_week}
<option value = "only_fourth_week">$lang{on_fourth_week}
<option value = "only_fifth_week">$lang{on_fifth_week}
<option value = "only_last_week">$lang{on_last_week}
</select> $lang{of_the_month}
<br/>

<span class="optional_field">
p1

  my $temp =<<p1;
<input name = "every_x_days" disabled/ value="1" style="width:2em;">
p1

  $lang{every_x_days} =~ s/###x###/$temp/;

      $return_text .=<<p1;
<input type="radio" name="recurrence_type" value="every_x_days" disabled onclick="recurrence_type_update()"> 
$lang{every_x_days}
</span>
<br/>

<span class="optional_field">
p1

  my $temp =<<p1;
<input name = "every_x_weeks" disabled/ value="1" style="width:2em;">
p1

  $lang{every_x_weeks} =~ s/###x###/$temp/;

      $return_text .=<<p1;
<input type="radio" name="recurrence_type" value="every_x_weeks" disabled onclick="recurrence_type_update()"> 
$lang{every_x_weeks}
</span>



</div>
      
<div class="leftcol" style="">
<span class="fit_event">
<i>$lang{fit_into_year}</i><br/>
<span class="small_note"><a href="javascript:display_help('fit_into_year','$lang{fit_into_year}')">$lang{help_on_this}</a></span>
</span>
</div>
<div class="rightcol" style="white-space:nowrap;">
<input type="radio" name="year_fit_type" value="every_month" checked disabled onclick="document.add_event_form.custom_months.disabled=true"> 
<span class="optional_field">
$lang{every_momth}
</span>

<div style="float:left;">
<input type="radio" name="year_fit_type" value="custom_months" disabled onclick="document.add_event_form.custom_months.disabled=false"> 
<span class="optional_field">$lang{certain_months1} </span>
<br/>
<span class="small_note">$lang{certain_months2}</span>
</div>

<div style="float:left;">
<select multiple name = "custom_months" size=4 disabled>
p1

  for ($l1=0;$l1<scalar @months;$l1++)
  {
      $return_text .=<<p1;
<option value = $l1>$months[$l1]
p1
  }

      $return_text .=<<p1;
</select>
</div>

</div>

<div class="leftcol" style="">
<label class="required_field">$lang{recurring_event_ends}</label>
</div>
<div class="rightcol" style="white-space:nowrap;">
<input name="recur_end_date" size=12 value="$recur_end_date" disabled>
</div>
      
<br style="clear:both;"/>
p1
    }
      
    $return_text .=<<p1;
</div>

<div style="margin-top:1em;margin-bottom:1em;float:left;width:48%;text-align:center;font-weight:bold;">
<a href="javascript:preview_event()">$lang{preview_event1}</a>
<p class="small_note active_tab_text">
$lang{preview_event2}
</p>
</div>

<div style="margin-top:1em;margin-bottom:1em;float:left;width:48%;text-align:center;font-weight:bold;">
<a href="javascript:preview_dates()">$lang{preview_dates1}</a>
<p class="small_note active_tab_text">
$lang{preview_dates2}
</p>
</div>
      
<div class="info_box" style="clear:both;">
p1
    if ($options{disable_passwords} ne "1")
    {
      $return_text .=<<p1;
<div class="leftcol" style="">
<label class="required_field" for="evt_cal_password">$lang{cal_password}</label>
</div>
<div class="rightcol" style="white-space:nowrap;">
<input type="password" id="evt_cal_password" name="evt_cal_password" style="width:30%;">
<span class="small_note" style="vertical-align:top;" ><a href="javascript:display_help('evt_cal_password','$lang{cal_password}')">$lang{help_on_this}</a>&nbsp;&nbsp;</span>
</div>
      
p1
    }
    if ($q->param('add_edit_event') eq "edit")
    {
      $return_text .=<<p1;
<div class="leftcol" style="">
&nbsp;
</div>
<div class="rightcol" style="white-space:nowrap;">
<input name="add_event_button" type="submit" value = "$lang{update_event}">
<div class="small_note">$lang{add_event2_update}</div>
</div>


<div style="text-align:left;">
<input name="del_event_button" class="delete_button" type="submit" value = "$lang{delete_event1}">
<div class="small_note">$lang{delete_event2}</div>
</div>

p1
    }
    else
    {
      $return_text .=<<p1;
<div class="leftcol" style="">
&nbsp;
</div>
<div class="rightcol" style="white-space:nowrap;">
<input name="add_event_button" type="submit" value = "$lang{add_event1}">
<br/>
<span id="preview_note" class="small_note">
$lang{add_event2}
</span>
</div>

<br style="clear:both;"/>
<br style="clear:both;"/>
p1
    }
    $return_text .=<<p1;
</div>
p1

  }
  else  #a user added/edited/deleted an event--do checks and perform resulting action
  {
    my @results_messages;
    my $recurring_event = $q->param('recurring_event');
    my $all_in_series = $q->param('all_in_series');
    #$debug_info .= "recurring_event_change_all: $all_in_series\n";
    
    if ($q->param('evt_cal_id') ne "")
    {
      %current_calendar =%{$calendars{$q->param('evt_cal_id')}};
    }
    
    
    # load (reload) all events (we have to write events beyond the default time window)
    if ($options{data_storage_mode} == 0)
    {
      &load_events("all") unless ($loaded_all_events eq "1");
    }

    if ($q->param('del_event_button') ne "")
    {
      #delete event.  
      $del_valid=1;
      
      # need to validate password against all its cal_ids
      
      if ($options{disable_passwords} ne "1")
      {
        #check password.
        $input_password = crypt($q->param('evt_cal_password'), substr($q->param('evt_cal_password'), 0, 2));
 
        if ($input_password ne $calendars{$current_event{cal_ids}[0]}{password} && $input_password ne $master_password)
        {
          $del_valid=0;
          push @results_messages, ($lang{update_event_err1}.$calendars{$current_event{cal_ids}[0]}{title});
        }
 
        if (! defined $events{$current_event_id})
        {
          $del_valid=0;
          push @results_messages, $lang{update_event_err2};
        }
      }
      
      
        
      if ($del_valid == 1)
      { #actually delete the event(s).
      
        if ($all_in_series ne "1")
        {
          &delete_event($current_event_id);
        
          $event_action_results .= <<p1;
<p style="font-weight:bold;">$lang{update_event_delete_successful}</p>
p1
        }
        else
        {
          # get the ids of the events in the series.
          my @events_in_series = &get_events_in_series($q->param('series_id'));
          &delete_events(\@events_in_series);
          $event_action_results .= <<p1;
<p style="font-weight:bold;">$lang{update_event_delete_successful_recurring}</p>
p1
        }
      }
      else
      {
        foreach $results_message (@results_messages)
        {
          $results_message =~ s/(.*$lang{Warning})/<span class="warning">$1<\/span>/i;
          $results_message =~ s/(.*$lang{Error})/<span class="error">$1<\/span>/i;
          $message_results .= "<li>$results_message</li>\n";
        }
        $event_action_results = "<ul style=\"font-size:small;\">$message_results</ul>$event_action_results";
      }
    }
    else
    {
      #check all input fields for validity
      my $event_valid = 1;
      my $event_id = $q->param('evt_id');        # only if editing.
      my $event_cal_id = $q->param('evt_cal_id');   
      
      my @evt_other_cal_ids;
      if ($options{multi_calendar_event_mode} > 0)
        {@evt_other_cal_ids = $q->param('evt_other_cal_ids')};
      
      my $event_cal_password = $q->param('evt_cal_password');    
      my $event_title = $q->param('evt_title');
      my $event_icon = $q->param('evt_icon');
      my $event_details = $q->param('evt_details');
      my $event_unit_number = $q->param('unit_number');
      my $event_bgcolor = $q->param('evt_bgcolor');
      my $event_series_id = $q->param('series_id');
      
      my $event_duration = 0;
      my $event_start_timestamp = 0;
      my $event_end_timestamp = 0;
      my $event_start_time_offset = 0;
      
      $recur_end_date = $q->param('recur_end_date');
      my $recur_end_timestamp = 0;
      my $all_day_event = $q->param('all_day_event');
      my $no_end_time = "";
      my $event_start_time = $q->param('evt_start_time');
      my $event_end_time = $q->param('evt_end_time');
      $event_start_date = $q->param('evt_start_date');
      $event_days = $q->param('evt_days');
      
      
      
      # Check data for legitimacy.  
      # some of these checks might be a bit redundant.
      if ($event_cal_id eq "")
      {
        $event_valid=0;
        push @results_messages, $lang{update_event_err3};
      }
      if ($event_title eq "")
      {
        $event_valid=0;
        push @results_messages, $lang{update_event_err4};
      }
      if ($event_icon eq "")
      {
        $event_valid=0;
        push @results_messages, $lang{update_event_err5};
      }

      $event_title =~ s/\r//g;                 # some browsers sneak these in 
      $event_details =~ s/\r//g;               # some browsers sneak these in 


      #strip html
      if ($event_title =~ m/<(.*)>/)
      {
        my $temp = $event_title;
        $temp =~ s/</&lt;/g;
        $temp =~ s/>/&gt;/g;
        
        push @results_messages, $lang{update_event_err7};
        $event_title =~ s/<(.*)>//g;
      }

      # strip out all non-numeric information from unit number
      my $unit_number = $event_unit_number;
      $unit_number =~ s/\D//g;
            
      #check event calendar name against existing calendars
      if (!defined == $calendars{$event_cal_id})
      {
        $event_valid=0;
        push @results_messages, $lang{update_event_err8};
      }
      elsif ($options{disable_passwords} ne "1")
      {
        #$debug_info .= "checking password\n";
        #check password
        
        $input_password = crypt($event_cal_password, substr($event_cal_password, 0, 2));
        
        if ($options{multi_calendar_event_mode} == 0 || $options{multi_calendar_event_mode} == 1)
        {
          my $temp = $q->param("evt_cal_id");
 
          # only the event's calendar's password or the master password is allowed
          if ($temp eq "" || $input_password ne $calendars{$temp}{password} && $input_password ne $master_password)
          {
            $event_valid=0;
            push @results_messages, ($lang{update_event_err1}."<b>".$current_calendar{title}."</b>");
          }
        }
        elsif ($options{multi_calendar_event_mode} == 2) # any of the event's calendars' passwords or the master password aer allowed
        {
          my $cal_password_valid = 0;
          my $temp = $q->param("evt_cal_id");
          if ($temp ne "" && ($input_password eq $calendars{$temp}{password} || $input_password eq $master_password))
          {
            $cal_password_valid= 1;
          }
          
          if ($cal_password_valid == 0)     
          {  
            foreach $cal_id (@evt_other_cal_ids)
            {
              my $temp = $cal_id;
              if ($temp ne "" && ($input_password eq $calendars{$temp}{password}))
                {$cal_password_valid = 1;}
            }
          }
          
          if ($cal_password_valid == 0)
          {
            $event_valid=0;
            push @results_messages, ($lang{update_event_err1}."<b>".$current_calendar{title}."</b>");
          }
        }
      }
      
      # check dates
      if ($event_valid == 1)
      {
        my $results = &verify_date($event_start_date);
        if ($results ne "")
        {
          $event_valid=0;
          $results =~ s/(.+?)\n/<li>$1<\/li>\n/g;      
          push @results_messages, "$lang{update_event_err9}<ul>$results</ul>"
        }
        
        if ($event_days eq "")
        {
          push @results_messages, "$lang{update_event_err9}<ul>$lang{date_verify_err2}</ul>"
        }
        if ($days =~ m/\D/ || $event_days <= 0)
        {
          push @results_messages, "$lang{update_event_err9}<ul>$lang{date_verify_err3}</ul>"
        }
      }
      
      # check recurring "repeat until" date
      if ($event_valid == 1)
      {
        @custom_months = $q->param('custom_months');

        if ($recurring_event ne "" && $add_edit_event eq "add")
        {
          $results = &verify_date($recur_end_date);
          if ($results ne "")
          {        
            $event_valid=0;
            $results =~ s/(.+?)\n/<li>$1<\/li>\n/g;      
            push @results_messages, "$lang{update_event_err10}<ul>$results</ul>"
          }
        }
      }
      
      # check time
      if ($event_valid == 1 && $all_day_event ne "1")
      {
        my $results = &verify_time($event_start_time);
        if ($results ne "")
        {
          $event_valid=0;
          $results =~ s/(.+?)\n/<li>$1<\/li>\n/g;      
          push @results_messages, "$lang{update_event_err14}<ul>$results</ul>"
        }
        
        if ($event_end_time ne "")
        {
          my $results = &verify_time($event_end_time);
          if ($results ne "")
          {
            $event_valid=0;
            $results =~ s/(.+?)\n/<li>$1<\/li>\n/g;
            push @results_messages, "$lang{update_event_err15}<ul>$results</ul>"
          }
        }
        
      }
      
      if ($event_valid == 1)
      {
        my ($start_mon, $start_mday, $start_year) = &format2mdy($event_start_date, $current_calendar{date_format});
        $start_mon--;  # convert month to 0-11 format

        if ($all_day_event eq "1")
        {
          $event_start_timestamp = timegm(0,0,0,$start_mday,$start_mon,$start_year);
          $event_end_timestamp = $event_start_timestamp + ($event_days * 86400) - 1;
        }
        else
        {
          $event_start_time_offset = &time2seconds($event_start_time);
          $event_start_timestamp = timegm(0,