lucidAuth/public/misc/script.manage.js

$(document).ready(function(){
    $('#usertable').editableTableWidget();

    $('#btnnewuser').click(function() {
        $('#usertable tbody').append($('<tr><td>&lt;username&gt;</td><td>User</td><td class="immutable"><a href="?">0</a></td></tr>'));
    });
});