detecting HTTP error using ajax

Question

I'm using ajax calls to retrieve some HTML data. In certain cases, there are chances that I may get HTTP error 403 (because of some IE bug Encountering 403 error while using ajax call on IE, Hash fragments with forward-slash throwing 403 errors with AJAX requests in IE).

For error handling purposes, I want to catch what error has occured and accordingly display some error message.

How do I do that?

Maybe something like

$.ajax({
    type : 'POST',
    data : data,
    cache : false,
    url : url,
    dataType : 'html'
    success : function(){
        //if HTTP response is ok, diplay data
        //else if HTTP response gets 403 error, display some other message
    }
});