form handler doesn't seem to work always
<p>Really weird, the following codes seems to work <em>sometimes</em> It always worked (on my Macbook Pro) and other computers, but when I tested today at my university (IE) it only showed the message 'Success' without handling the action in <code>process-mailing.php</code> (which works btw)</p>

<pre><code>$("form#mailing").submit(function(event){
    event.preventDefault();
    $.post('process-mailing.php',$("#mailing").serialize(),function(data){
        $("&amp;lt;div class='form-message-succeed'&gt;Succesvol toegevoegd!&lt;/div&gt;").hide().appendTo("#mailing").fadeIn("slow");
        $("#mail").add("#go-mailing").attr("disabled", "disabled");
    });
});




&lt;form id="mailing" method="post" action="process.php"&gt;
    &lt;fieldset&gt;
        &lt;legend&gt;E-mail&lt;/legend&gt;
        &lt;label for="mail" id="mail-label"&gt;Je mail adres&amp;lt;/label&gt;
        &lt;input type="text" id="mail" name="mail" placeholder="voorbeeld@domein.com"&gt;
        &lt;label for="go-mailing" id="gol"&gt;Voeg toe&amp;lt;/label&gt;
        &lt;input type="submit" class="go" id="go-mailing" value="Voeg Toe"&gt;
    &lt;/fieldset&gt;
&lt;/form&gt;
</code></pre>

<p>Can it be that this works in certain browsers only? And how can I make it work everywhere?</p>
