seconda parte...
<input style="height:2.5em;width:20em;font-size:110%;border-radius: 10px;" type="button" id="btn1" value="calcola" onclick="calcola();"/></br></br>
</form>
<form name="form1" id="formulario1">
<input type="text" name="email2" value="mio@gmail.com" style="visibility:hidden;">
<label>Email:</label><input type="text" name="email"style="margin-left: 2em;width:10em;text-align:center; border:3px solid black;border-radius:10px; height:2.5em; font-size: 100%;font-weight:bold; font-family:sans-serif;"> <br />
<input type="text" name="oggetto" value="Preventivo" style="visibility:hidden;"> <br />
<label>Forma:</label>
<select name="dicitura" id="dici" style="margin-left: 2em;min-width:10em;text-align:center; border:3px solid black;border-radius:10px; height:2.5em; font-size: 100%;font-weight:bold; font-family:sans-serif;">
<option value="" selected="selected"></option>
<option value="Spett">Azienda </option>
<option value="Egregio signor ">Privato maschile</option>
<option value="Gentile signora ">Privato femminile</option>
</select>
</br>
</br>
<label>Nome cliente:</label> &<input type="text" name="destinatario" id="clie"style="margin-left:1em;width:10em;text-align:center; border:3px solid black;border-radius:10px; height:2.5em; font-size: 100%;font-weight:bold; font-family:sans-serif;"> <br />
<br />
<label>Data di partenza:</label> <input type="date" name="datap" id="part"style="margin-left:1em;width:10em;text-align:center; border:3px solid black;border-radius:10px; height:2.5em; font-size: 100%;font-weight:bold; font-family:sans-serif;"/></br>
<br />
<label>Data di arrivo:</label> &<input type="date" name="dataarr" id="arr"style="margin-left:1em;width:10em;text-align:center; border:3px solid black;border-radius:10px; height:2.5em; font-size: 100%;font-weight:bold; font-family:sans-serif;"/></br>
<br>
<label>Luogo di partenza:</label> <input type="text" name="luogop" id="lpart"style="margin-left:1em;width:10em;text-align:center; border:3px solid black;border-radius:10px; height:2.5em; font-size: 100%;font-weight:bold; font-family:sans-serif;"/></br>
<br />
<label>Luogo di arrivo:</label> <input type="text" name="luogoarr" id="larr"style="margin-left:1em;width:10em;text-align:center; border:3px solid black;border-radius:10px; height:2.5em; font-size: 100%;font-weight:bold; font-family:sans-serif;"/></br>
<br>
<br>
<input type="button" value="Invia Email" onClick="Email()" style="height:2.5em;width:20em;font-size:110%;border-radius: 10px;">
<br>
</form>
<input type="reset" id="reset" onclick="resett()"style="height:2.5em;width:6em;fo nt-size:110%;border-radius: 10px;" name="reset" value="Resetta">
</div>
</body>