$(document).ready(function() {
    // Find forms with  a element with class "submit", insert submit button.
    $('form .submit').each(function() {
        var element = $(this);
        element.css('cursor', 'pointer');
        element.click(function() {
            $(this).parents('form').submit();
        });
    });
    $('form :input').keyup(function(e) {
        if (e.keyCode == 13) {
            $(this).parents('form').submit();
            return false;
        }
    });
});