ok scusami, ti posto il codice:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="it">
<head>
<title>Aggiungi campo se... - Esempio JavaScript scaricato da HTML.it</title>
<meta http-equiv="Content-type" content="text/html; charset=iso-8859-1" />
<meta http-equiv="Content-Language" content="it" />
<meta name="Robots" content="All" />
<meta name="Description" content="HTML.it - il sito italiano sul Web publishing" />
<meta name="Keywords" content="Ad ogni apertura di pagina questo script genera un differente colore di sfondo." />
<meta name="Owner" content="HTML.it srl" />
<meta name="Author" content="HTML.it srl" />
<meta name="Copyright" content="HTML.it srl" />
<script type="text/javascript">
/* This script and many more are available free online at
The JavaScript Source!! http://javascript.internet.com
Created by: Anonymous | http://javascript.internet.com/ */
function toggleMe(obj, a){
var e=document.getElementById(a);
if(!e)return true;
e.style.display="block"
return true;
}

function toggleMe2(obj, a){
var e=document.getElementById(a);
if(!e)return true;
e.style.display="none"
return true;
}

</script>
</head>
<body>
<h1>Aggiungi campo se...</h1>
<form name="theForm">
Sei sposato?

<input type="radio" name="married" value="yes" onclick="return toggleMe(this, 'marriedInfo')"> Sì
<input type="radio" name="married" value="no" onclick="return toggleMe2(this, 'marriedInfo')"> No

<div id="marriedInfo" style="display: none; margin-left: 20px;">
<table>
<tr>
<td>Nome di tua moglie:</td>
<td style="text-align: right;"><input name="name" type="text"></td>
</tr><tr>
<td>Data di nascita di tua moglie:</td>
<td style="text-align: right;"><input name="bday" type="text"></td>
</tr><tr>
<td>Luogo di nascita di tua moglie:</td>
<td style="text-align: right;"><input name="bplace" type="text"></td>
</tr>
</table>
</div>
</form>







<div align="center">
[img]logo_htmlit.gif[/img]


<span style="font-size:80%; color:gray">sponsor</span>
<script language="javascript" type="text/javascript">
<!--
var browName = navigator.appName;
var SiteID = 1;
var ZoneID = 24;
var browDateTime = (new Date()).getTime();
if (browName=='Netscape')
{
document.write('<s'+'cript lang' + 'uage="jav' + 'ascript" src="http://adserver.html.it/a.aspx?ZoneID=' + ZoneID + '&amp;Task=Get&amp;IFR=False&amp;Browser=NETSCAPE4 &amp;PageID=90264&amp;SiteID=' + SiteID + '&amp;Random=' + browDateTime + '">'); document.write('</'+'scr'+'ipt>');
}
if (browName!='Netscape')
{
document.write('<s'+'cript lang' + 'uage="jav' + 'ascript" src="http://adserver.html.it/a.aspx?ZoneID=' + ZoneID + '&amp;Task=Get&amp;IFR=False&amp;PageID=90264&amp; SiteID=' + SiteID + '&amp;Random=' + browDateTime + '">'); document.write('</'+'scr'+'ipt>');
}
// -->
</script>
<noscript>
<a href="http://adserver.html.it/a.aspx?ZoneID=24&amp;Task=Click&amp;Mode=HTML&amp; SiteID=1&amp;PageID=90264" target="_blank">
</a>
</noscript></div>


</body>
</html>

Mantenendo la stessa funzionalità ed adattandolo alle mie esigenze, vorrei che i tre campi puntassero ad un unico campo di un database MySql...