Sorry for my delay......here is a solution that we have used for a couple of customers.....
In the WEB Login, on the Provisioning Settings.....in the Footer HTML....add the below code, this will append the DOMAIN (DANNYJUMP) to the userid....give this a go and let me know if this works for you.
{nwa_script src=jquery.min}
<script type="text/javascript">
{* Change the following to automatically prepend a domain name on form submit *}
var prependDomain = 'DANNYJUMP';
{literal}
$(document).ready(function() {
$("input[name='user']").blur(function () {
var u = $("input[name='user']"), user = u.val().trim();
if (user.indexOf("\\") == -1) {
u.val(prependDomain + "\\" + user);
}
});
});
{/literal}</script>