That's not the code you showed us.

> and, in the source of the page I see:
<form name="myform" action="/cgi-bin/MEMBRAIN.cgi" method="post" onSubmit="javascript: return checkform();">

you are confusing two things:

1. the static page you open in your browser to see the form
2. the CGI you can submit your form parameters to.

I guess this is where I am confused, as to what do I need to specify in the URL so I can force the page to run using my data. I thought it was enough to put:


my $url = 'http://www.csbio.sjtu.edu.cn/bioinf/MemBrain/';
my $mech = WWW::Mechanize->new (timeout=>1000);
$mech->post($url);
#$mech->get($url);
[download]


but it fails to run with the error: Error POSTing http://www.csbio.sjtu.edu.cn/cgi-bin/MEMBRAIN.cgi: Internal Server Error or Error GETing http://www.csbio.sjtu.edu.cn/cgi-bin/MEMBRAIN.cgi: Internal Server Error
I even tried: my $url=http://www.csbio.sjtu.edu.cn/cgi-bin/MEMBRAIN.cgi, still error...

It's

http://www.csbio.sjtu.edu.cn/cgi-bin/MEMBRAIN.cgi

for the form's CGI!

... but without submitted form parameters it'll only return an error.

Cheers Rolf
_{(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery}

Yes, of course, I added some:


my $url = 'http://www.csbio.sjtu.edu.cn/cgi-bin/MEMBRAIN.cgi';
my $mech = WWW::Mechanize->new (timeout=>1000);
$mech->get($url);

        $mech->submit_form
        (
            form_number => 1,
            fields      => 
            {
                #textarea name | value
                S1 => ">$id\n$seq",

                #Radio button name | prediction type
                R4    =>  TOPpre,

                #Radio button SIGNAL | I do not know if I have a signa
+l peptide
                R2    =>  SignalYES,

                #Radio button ORGANISM | Human, Plant, Animal, OEuk, G
+pos, Gneg, 
                R3    =>  Human,

                #Fill in email
                email => 'testmail@gmail.com'
            }
        );
[download]