[jQuery] How add data in Request Body using jquery ajax

[Nitin]

Hello,

I am new to jquery and so far not figured out a way on how to specify
data in request body while making Jquery ajax call.

I am trying to do this:

var request_body = "some data";
$.ajax({
        error:function(request){
                alert('failure');
                $('#error').html(request.responseText);
        },
        success:function(xml, textStatus){
                alert('success');
        },
        type: 'PUT',
        url: edge_server_root + '/timezones/' + timezone.id,
        contentType: 'text/xml',
        data: request_body
});

I think the above call puts the request_body in the HTTP Header
instead of Request Body. Can any one point out on specify the
request_body in the Request Body instead of in Header?

Thanks.
Regards,
Nitin