[jQuery] Getting XMLHttpRequest status

[jQuery] Getting XMLHttpRequest status


Hey, all. I'm sending an AJAX request, and in addition to executing
functions on Success or failure, I want to get the Status of the
XMLHttpRequest object (404, 401, etc). It's passed into the functions,
but I can't figure out how to retrieve it.
$.ajax({
    type: "GET",
    url: "member_check.php",
    dataType: "xml",
    error: function(event, XMLHttpRequest, ajaxOptions, thrownError) {
        alert( XMLHttpRequest.status ) // << ????
    }
)
Any ideas? Thanks!
Corey