[jQuery] Possible to cancel an AJAX request?

[[EMAIL PROTECTED]]

Hi,

Is it possible to cancel an AJAX request once the wheel has been set
in motion?  Below is my call

                var response = $.ajax({
                        type: "GET",
                        url: 'get_file_manager_preview.php',
                        data: 'f=' + p_file,
                        async: false,
                        error: function(request, msg){
                                alert( "Server timeout: " + formDesc +
":" + msg );
                        },
                        success: function(request) {
                                alert( "Saved" );
                        }
                });

What I would like is that after the AJAX request is started, there is
a button on my page that reads, "Cancel", that stops the request.
Again, not sure how doable this is. - Dave