Queued Ajax Requests in jQuery

// Request Queueing in jQuery
// Ensure on client side that one request is processed after the former has been completed
// Any request should be automatically queued, with no changes in the $.post( ) and $.ajax( ) calls

/* For this, register special queue functions in jQuery.ajaxSetup() :

 $.ajaxSetup({
   "beforeSend":ajaxQueue.beforeSend,
   "complete":ajaxQueue.complete
   })

*/

var ajaxQueue =  (function() {
  var q = [];
  var executingNext = false;
  return {
    beforeSend:function(jqXHR,opt) {
      if ($.active > 1 && ! executingNext ) {
        q.push(opt);
        executingNext = false;
        return false;
        }
      },
    complete:function() {
      if (q.length > 0) {
        var $next = q.shift( );
        executingNext = true;
        $.ajax( $next );
        }
      },
    get:function() {  // --> for debug purposes
      return q;
      }
    };
 })();