This will depend heavilly on the module that you're using, but looks like you forgot to tell us which one is.

Supposing that you're talking about CGI.pm, then you may know that almost all HTML tags generated by it doesn't have a written method/function but are created on the fly.

For example, if you do:

use CGI;
my $cgi = new CGI;
print $cgi->br, $cgi->start_br, $cgi->end_br, "\n";
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Will print:

<br /><br></br>
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Using the same idea I got the code below:

use warnings;
use strict;
use CGI;

my $cgi          = new CGI;
my $n            = 1;
my @COLUMN_TYPES = qw ( one two three four five );
my %attributes = (
                   'onChange' => 'displaydbfields(' . $n . ')',
                   'id'       => 'coltype' . $n,
);
my $col = { type => 'some type' };

print $cgi->popup_menu(
                        -id         => 'coltype' . $n,
                        -name       => 'type',
                        -values     => \@COLUMN_TYPES,
                        -default    => $col->{type},
                        -attributes => \%attributes,
    ),
    "\n";
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Which prints:

<select name="type" tabindex="1" id="coltype1">
<option value="one">one</option>
<option value="two">two</option>
<option value="three">three</option>
<option value="four">four</option>
<option value="five">five</option>
</select>
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Sorry I didn't include the module I was using. I'm still very new to Perl and I forget that there are a several ways to do almost anything.

Your response was very helpful. I now have the attributes where they are needed.

Cheers.

Hi. Its a good idea to read the manual, which shows this

   %labels = ('eenie'=>'your first choice',
              'meenie'=>'your second choice',
              'minie'=>'your third choice');
   %attributes = ('eenie'=>{'class'=>'class of first choice'});
   print popup_menu('menu_name',
                            ['eenie','meenie','minie'],
          'meenie',\%labels,\%attributes);
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<select name="menu_name" tabindex="1">
<option class="class of first choice" value="eenie">your first choice<
+/option>
<option selected="selected" value="meenie">your second choice</option>
<option value="minie">your third choice</option>
</select>
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The optional fifth parameter (-attributes) is provided to assign any of the common HTML attributes to an individual menu item. It's a pointer to an associative array relating menu values to another associative array with the attribute's name as the key and the attribute's value as the value.