Sending A Form Created By Javascript

I have this function:

var CntEmails=0;
function CreateEmails(id,name){

//passo1: criar elementos
br1 = document.createElement('BR');
emailText=document.createTextNode('email:');
email = document.createElement('INPUT');

// passo 2: anexar elementos
gEBId(id).appendChild(emailText);
gEBId(id).appendChild(email);
gEBId(id).appendChild(br1);

// passo 3: definir tipo de campos
email.type='TEXT'

// passo 4: definir value
email.value=CntEmails;

// passo 5: definir name
email.name=name+CntEmails;

// passo 6: incremental contador
CntEmails++;
}

gEBId() -> means getElementByID();

Using the function:

HTML Code:
<input type="button" onclick="javascript:CreateEmails('emails','email');" value="+">

<div id="emails">
</div>

This function works fine (thanks to sitepoint users).

But I cant send the variables by a post method. If I try in php: print_r($_POST) or var_dump($POST) I just get the static fields.