Hi,I have just entered the world of jquery and pretty new to javascript too.I have a small javascript snippet like below:-

<script type="text/javascript">

 $(function(){

    $('a').click(function(event){

        event.preventDefault();

        $.get('/_add_navigation_',function(response){

        $('#themaincontents').html(response);

        })

   })

</script>

The html looks like below:-

 <a href="?toaddnavigation">CLICK Me</a>

 <div id="themaincontents"></div>

On the server side I do an xhr header check by something like

if request.is_xhr: send response else:redirect somewhere

Now while this code works fine on chrome and opera , on firefox it is behaving a little weird. The server does not send back the reponse rather does a redirect. That means it says that there is no xhr header. Why should this happen while on the other two browsers it is working fine. (I am using Firefox 3.6.12) Update-Just had a look at the request headers of firefox and I find no X-Requested-With:XMLHttpRequest header, but it is present in chrome)