/**
* Ajax Queue Plugin
* 
* Homepage: http://jquery.com/plugins/project/ajaxqueue
* Documentation: http://docs.jquery.com/AjaxQueue
*/

/**

<script>
$(function(){
jQuery.ajaxQueue({
url: "test.php",
success: function(html){ jQuery("ul").append(html); }
});
jQuery.ajaxQueue({
url: "test.php",
success: function(html){ jQuery("ul").append(html); }
});
jQuery.ajaxSync({
url: "test.php",
success: function(html){ jQuery("ul").append("<b>"+html+"</b>"); }
});
jQuery.ajaxSync({
url: "test.php",
success: function(html){ jQuery("ul").append("<b>"+html+"</b>"); }
});
});
</script>
<ul style="position: absolute; top: 5px; right: 5px;"></ul>

*/
/*
* Queued Ajax requests.
* A new Ajax request won't be started until the previous queued 
* request has finished.
*/
jQuery.ajaxQueue = function (o) {
    var _old = o.complete;
    o.complete = function () {
        if (_old) _old.apply(this, arguments);
        jQuery.dequeue(jQuery.ajaxQueue, "ajax");
    };

    jQuery([jQuery.ajaxQueue]).queue("ajax", function () {
        jQuery.ajax(o);
    });
};

/*
* Synced Ajax requests.
* The Ajax request will happen as soon as you call this method, but
* the callbacks (success/error/complete) won't fire until all previous
* synced requests have been completed.
*/
jQuery.ajaxSync = function (o) {
    var fn = jQuery.ajaxSync.fn, data = jQuery.ajaxSync.data, pos = fn.length;

    fn[pos] = {
        error: o.error,
        success: o.success,
        complete: o.complete,
        done: false
    };

    data[pos] = {
        error: [],
        success: [],
        complete: []
    };

    o.error = function () { data[pos].error = arguments; };
    o.success = function () { data[pos].success = arguments; };
    o.complete = function () {
        data[pos].complete = arguments;
        fn[pos].done = true;

        if (pos == 0 || !fn[pos - 1])
            for (var i = pos; i < fn.length && fn[i].done; i++) {
                if (fn[i].error) fn[i].error.apply(jQuery, data[i].error);
                if (fn[i].success) fn[i].success.apply(jQuery, data[i].success);
                if (fn[i].complete) fn[i].complete.apply(jQuery, data[i].complete);

                fn[i] = null;
                data[i] = null;
            }
    };

    return jQuery.ajax(o);
};

jQuery.ajaxSync.fn = [];
jQuery.ajaxSync.data = [];