How to focus a dynamically generated "a" tag?

I am trying to pass the "a" tag after it has been created with an ajax call.

the code looks like this:

    <form method="post" id="submitrow">
        <table>
            <tr>
                <td>
                    <input name="quantity" id="id_quantity" />
                </td>
                <td>$
                    <input name="price" id="id_price" />
                </td>
                <td><span id="add_row"></span>

                </td>
            </tr>
        </table>
    </form>

    <script>
    jQuery("#id_quantity").change(function () {
        jQuery('#add_row').html('<a onclick="document.forms[\'submitrow\'].submit();" id="sbmbtn">click me</a>');

        jQuery('#sbmbtn').focus(); // I want to focus the new link, it does not works

        alert(jQuery('#sbmbtn').is(':focus')); // it should be True!

        jQuery('#sbmbtn').live("keyup", function (e) {
            if (e.keyCode == 13) {
                alert('whoot whoot!');
            }
        });
    });

    jQuery("#id_quantity").focus();
    </script>

      

        
        
        
      

    

The DOM seems to update incorrectly after replacing the html. Maybe I need to replace the code in a different way?

I created a fiddle with a simplified version of my code that reproduces the problem.

Thanks in advance for any hint! :)