This code will keep your box as long as your longest value. 
my @values = qw/
                One
                Two
                Three
                Four
                Zoobdude(_Been_to_Dennys?_:)
               /;

my $longest = 0;

map { $longest = length > $longest ? length : $longest } @values;

printf "<option value='$_'>%${longest}s\n", $_ foreach @values;

[download]
Update: You wanted to use CGI.pm? Ok, this time we'll use a fixed width of 40 chars: 
my @values = qw/
                One
                Two
                Three
                Four
                Zoobdude(_Been_to_Dennys?_:)
               /;

my %popup;

$popup{$_} = sprintf "%40s",$_ foreach @values;

print $cgi->popup_menu(
                       -name => 'popup',
                       '-value' => [ keys %popup ],
                       '-labels' => \%popup,
                      ),"\n";

[download]
Enjoy! 
--
Casey

In reply to Re: Scrolling Lists by cwest
in thread Scrolling Lists by drujax

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