JQuery invalid argument post
<p>I have this code:</p>

<pre><code>&lt;script type="text/javascript"&gt;
    var loader = "#loader";

    $(function() {
        $("#selUsers").change(function() {
            if ($(this).val() != "") {
                $(loader).show();

                $.ajax({
                    type: "POST",
                    url: "",
                    data: {
                        userID: $(this).val()
                    },
                    success: function(msg) {

                        $("#Firstname").val(msg[0].Firstname || "");
                        $("#Surname").val(msg[0].Surname || "");
                        $("#Email").val(msg[0].Email || "");
                        $("#Phone").val(msg[0].Phone || "");
                        $("#Mobile").val(msg[0].Mobile || "");
                        $("#Address").val(msg[0].Address || "");
                        $("#Zipcode").val(msg[0].Zipcode || "");
                        $("#City").val(msg[0].City || "");
                        $(loader).hide();
                    },
                    error: function() {
                        $(loader).hide()
                    }
                });
            } else {
                $(":input[type=text]").val("");
                $("#BookingNotes").val("");
            }

        });
    });
&lt;/script&gt;
</code></pre>

<p>And I have included these:</p>

<pre><code>&lt;script src="/Scripts/jquery-1.4.2.min.js" type="text/javascript"&gt;&lt;/script&gt;
&lt;script src="/Scripts/jquery-ui-1.8.custom.min.js" type="text/javascript"&gt;&lt;/script&gt;
</code></pre>

<p>And I get invalid argument.... can't see which row of those, since row 127 is a html-tag only..</p>

<p>As I recall this worked before, maybe I have included wrong javascript?</p>

<p>You guys have any clue what might be wrong?</p>

<p>/M</p>
