Questo è il file "form.htm"

codice:
<html>


<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>FORM JAVASCRIPT</title>
<script type="text/javascript" language="javascript" src="validation.js"></script>


<script>
function reload_captcha () {
    document.getElementById("captcha").src = "captcha.php?" + Math.random();
}
</script>




</head>


<body topmargin="0" leftmargin="0" rightmargin="0" bottommargin="0" marginwidth="0" marginheight="0">
<form method="POST" name="modulo" action="invia.php" onSubmit="return Controlla(this);">


                    <div align="left">
                    <div align="left">
                    <div align="left">
                <table border="0" width="450" cellspacing="0" cellpadding="0" id="table380">
                    <tr>
                        <td>
<i><b>
                            <font face="Arial" color="#4B4B4B">
                            Verifica disponibilità</font></b></i></td>
                    </tr>
                    <tr>
                        <td>
                            <div align="center">
                                <table border="0" width="100%">
                                    <tr>
                                        <td width="111">
                                    <font face="Arial" size="2" color="#4B4B4B">
                                    Cognome:</font><font face="Verdana" style="font-size: 10pt; font-weight: 700" color="#FF0000">*</font></td>
                                        <td>&nbsp;</td>
                                        <td>
                                    <font face="Arial" size="2" color="#4B4B4B">
                                    Nome:</font><font face="Verdana" style="font-size: 10pt; font-weight: 700" color="#FF0000">*</font></td>
                                        <td>&nbsp;</td>
                                    </tr>
                                    <tr>
                                        <td width="111">
                                    <font size="4" face="Palatino Linotype">
                                    <input type="text" name="cognome" size="25" style="border:1px solid #D1D1D1; float: left; padding-left:4px; padding-right:4px; padding-top:1px; padding-bottom:1px; color:#43C5C3; font-family:Bookman Old Style; background-image: url('text.jpg')"></font></td>
                                        <td>&nbsp;</td>
                                        <td>
                                    <font size="4" face="Palatino Linotype">
                                    <input name="nome" size="25" style="border:1px solid #D1D1D1; float: left; padding-left:4px; padding-right:4px; padding-top:1px; padding-bottom:1px; color:#43C5C3; font-family:Bookman Old Style; background-image: url('text.jpg')"></font></td>
                                        <td>&nbsp;</td>
                                    </tr>
                                    <tr>
                                        <td width="111">
                                    <font face="Arial" size="2" color="#4B4B4B">
                                    Telefono/Cellulare:</font><font face="Verdana" style="font-size: 10pt; font-weight: 700" color="#FF0000">*</font></td>
                                        <td>&nbsp;</td>
                                        <td>
                                        <font face="Arial" size="2" color="#4B4B4B">
                                    Città:</font><font face="Verdana" style="font-size: 10pt; font-weight: 700" color="#FF0000">*</font></td>
                                        <td>&nbsp;</td>
                                    </tr>
                                    <tr>
                                        <td width="111">
                                    <font size="4" face="Palatino Linotype">
                                    <input type="text" name="telefono" size="25" style="border:1px solid #D1D1D1; float: left; padding-left:4px; padding-right:4px; padding-top:1px; padding-bottom:1px; color:#43C5C3; font-family:Bookman Old Style; background-image: url('text.jpg')"></font></td>
                                        <td>&nbsp;</td>
                                        <td>
                                    <font size="4" face="Palatino Linotype">
                                    <input type="text" name="citta" size="30" style="border:1px solid #D1D1D1; float: left; padding-left:4px; padding-right:4px; padding-top:1px; padding-bottom:1px; color:#43C5C3; font-family:Bookman Old Style; background-image: url('text.jpg')"></font></td>
                                        <td>&nbsp;</td>
                                    </tr>
                                    <tr>
                                        <td width="111">
                                    <font face="Arial" size="2" color="#4B4B4B">
                                    E-mail:</font><font face="Verdana" style="font-size: 10pt; font-weight: 700" color="#FF0000">*</font></td>
                                        <td>&nbsp;</td>
                                        <td>&nbsp;</td>
                                        <td>&nbsp;</td>
                                    </tr>
                                    <tr>
                                        <td width="111">
                                    <font size="4" face="Palatino Linotype">
                                    <input type="text" name="email" size="25" style="border:1px solid #D1D1D1; float: left; padding-left:4px; padding-right:4px; padding-top:1px; padding-bottom:1px; color:#43C5C3; font-family:Bookman Old Style; background-image: url('text.jpg')"></font></td>
                                        <td>&nbsp;</td>
                                        <td>&nbsp;</td>
                                        <td>&nbsp;</td>
                                    </tr>
                                </table>
                            </div>
                                </td>
                    </tr>
                    <tr>
                        <td>
&nbsp;</td>
                    </tr>
                    <tr>
                        <td>
<table cellSpacing="0" cellPadding="0" align="center" border="0" id="table677" width="340">
    <tr>
        <td style="FONT-SIZE: 9pt; COLOR: #003e84; FONT-FAMILY: Verdana" vAlign="top">
        &nbsp;</td>
        <td style="FONT-SIZE: 9pt; COLOR: #003e84; FONT-FAMILY: Verdana" vAlign="top" width="160">
        &nbsp;<p><font size="2" color="#4B4B4B" face="Arial">Modalità di 
        pagamento:</font><b><font color="#FF0000" size="2">*</font></b></td>
        <td style="FONT-SIZE: 9pt; COLOR: #003e84; FONT-FAMILY: Verdana" width="159">
        <font size="2" color="#000000"><br>
        </font>
        <font face="Verdana">
        <input type="radio" value="Bonifico Bancario" name="pagamento" checked></font><font size="2" color="#000000"><font face="Arial">Bonifico 
        Bancario</font><br>
        </font>
        <font face="Verdana">
        <input type="radio" value="Contanti" name="pagamento" ></font><font size="2" color="#000000"><font face="Arial">Contanti</font><font face="Palatino Linotype"><br>
&nbsp;</font></font></td>
    </tr>
</table>
                                    <div align="center">
                                        <table border="0" width="400" cellpadding="0" id="table678">
                                            <tr>
                                                <td width="20">
                                                <p align="left">
                                                <label for="accetto">
                                                <input id="accetto" type="checkbox" value="accetto" name="C6" checked /></label>
                                                </td>
                                                <td>
                                                <a href="file:///E:/Backup%20ELIO%2005.06.2012/Materiale%20di%20Elio/sito%20ELMAR/Sito%20v.23%20con%20nuova%20Area%20protetta/protect/protect-APREAMARE/x" class="linkelmar">
                                                <font face="Arial" color="#4B4B4B" size="1">
                                                <span style="text-decoration: none">
                                                Autorizzo trattamento Dati 
                                                Personali</span></font><b><span style="text-decoration: none"><font face="Arial" size="1" color="#4B4B4B">
                                                »</font></span></b></a></td>
                                                <td width="146">
                                                <p align="center">
                                                <b>
                                                <font size="2" face="Arial" color="#4B4B4B">
                                                (</font><font color="#FF0000" size="2" face="Verdana">*</font><font size="2" face="Arial" color="#4B4B4B">) 
                                                    </font><i><span lang="it">
                                                <font size="1" face="Arial" color="#4B4B4B">
                                                Campi obbligatori</font></span></i></b></td>
                                                <td width="18">
                                                &nbsp;</td>
                                            </tr>
                                        </table>
<div align="center">
    <table border="0" width="425" id="table679">
        <tr>
            <td width="76">&nbsp;</td>
            <td width="320">
            &nbsp;</td>
            <td width="15">
            &nbsp;</td>
        </tr>
        <tr>
            <td width="76"><font face="Arial" size="2" color="#4B4B4B">
            Particolari servizi o necessità:</font></td>
            <td width="320">
            <textarea name="richieste" rows="5" cols="50" style="border:1px solid #C0C0C0; padding-left:3px; padding-right:3px; color:#43C5C3; font-family:Arial"></textarea></td>
            <td width="15">
            &nbsp;</td>
        </tr>
    </table>
    <p>&nbsp;</div></div>
                                </td>
                    </tr>
                    <tr>
                        <td>


<img src="captcha.php" alt="Captcha" id="captcha" border="1px" value='<?php $_POST["captcha"] ?>'/>
<img border="0" src="code-refresh.png" width="16" height="16" onClick="reload_captcha()">
<font color="#4B4B4B">» </font>
<input type="text" name="codice" size="5" maxlength="3" style="border:1px solid #D1D1D1; padding-left:4px; padding-right:4px; padding-top:1px; padding-bottom:1px; color:#43C5C3; font-family:Bookman Old Style; background-image: url('text.jpg')"></td>
                    </tr>
                    <tr>
                        <td>
                                    <div align="left">
                                        <table border="0" width="228" cellspacing="4" height="74">
                                            <tr>
                                                <td width="218">
                <input type="button" value="Verifica disponibilità" onClick="Controlla()" style="width: 270; height: 74; color: #FFFFFF; font-family: Verdana; font-size: 11; font-weight: bold; border-width: 0; padding-left: 10px; padding-right: 10px; padding-top: 8px; padding-bottom: 10px; background-image: url('Pulsante-invia.jpg'); float:left"></td>
                                            </tr>
                                        </table>
                                    </div>
                                </td>
                    </tr>
                    </form>
                    </table>
                    </div>
                    </div>
                    </div>
</body>


</html>