/**
 * Debounce and throttle function's decorator plugin 1.0.5
 *
 * Copyright (c) 2009 Filatov Dmitry (alpha@zforms.ru)
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 */

(function($) {

$.extend({

        debounce : function(fn, timeout, invokeAsap, ctx) {

                if(arguments.length == 3 && typeof invokeAsap != 'boolean') {
                        ctx = invokeAsap;
                        invokeAsap = false;
                }

                var timer;

                return function() {

                        var args = arguments;
                        ctx = ctx || this;

                        invokeAsap && !timer && fn.apply(ctx, args);

                        clearTimeout(timer);

                        timer = setTimeout(function() {
                                invokeAsap || fn.apply(ctx, args);
                                timer = null;
                        }, timeout);

                };

        },

        throttle : function(fn, timeout, ctx) {

                var timer, args, needInvoke;

                return function() {

                        args = arguments;
                        needInvoke = true;
                        ctx = ctx || this;

                        timer || (function() {
                                if(needInvoke) {
                                        fn.apply(ctx, args);
                                        needInvoke = false;
                                        timer = setTimeout(arguments.callee, timeout);
                                }
                                else {
                                        timer = null;
                                }
                        })();

                };

        }

});

})(jQuery);