This is how you write that stuff ( both home.pl and wel.pl ), you print from Main, your ThisPage() or ThatPage() returns $headers, $body

#!/usr/bin/perlml --
##
##
##
## perltidy -olq  -csc -csci=3 -cscl="sub : BEGIN END " -otr -opr -ce 
+-nibc -i=4 -pt=0   "-nsak=*"
## perltidy -olq  -csc -csci=10 -cscl="sub : BEGIN END if " -otr -opr 
+-ce -nibc -i=4 -pt=0   "-nsak=*"
## perltidy -olq  -csc -csci=10 -cscl="sub : BEGIN END if while " -otr
+ -opr -ce -nibc -i=4 -pt=0   "-nsak=*"
#!/usr/bin/perl --
use strict;
use warnings;

use CGI ();
use CGI::Carp qw( fatalsToBrowser );

Main( @ARGV );
exit( 0 );

sub Main {
    my $q = CGI->new;
    return print GoToWellWithCookies( $q );
} ## end sub Main

sub UrlFor {
    my( $q, $path ) = @_;
    return $path;
} ## end sub UrlFor

sub ValidLogin {
    my( $q ) = @_;
    my $user = $q->param( 'login' );
    my $pass = $q->param( 'pass' );
## YOUR JOB :)
    return !!1 if $user eq $pass;
    return !!0;
} ## end sub ValidLogin

## sub TryAndLoginToGoHome 
## accepts $query
## returns $headers, $body;
## 
sub GoToWellWithCookies {
    my( $q ) = @_;
    if( my $user = ValidLogin( $q ) ) {
        my $cookie = $q->cookie(
            -name    => 'id',
            -value   => $user,
            -expires => '+2m',
            -path    => '/',
        );
        return $cg->redirect(
            -location => UrlFor( $q, "wel.pl" ),
            -cookie   => $cookie,
        );
    } else {
        ;
        return $cg->redirect( -location => UrlFor( $q, "home.pl" ), );
    }
} ## end sub GoToWellWithCookies
__END__
__END__
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