gistfile1.js

(function($) {
        $.fn.poll = function(options){
                var $this = $(this);

                var opts = $.extend({}, $.fn.poll.defaults, options);
                setInterval(update, opts.interval);

                function update(){
                        $.ajax({
                                type: opts.type,
                                url: opts.url,
                                success: opts.success,
                                error: function (request, status, error) {
                                        //console.log("Ocorreu um erro: "+error);
                    }
                        });
                };
        };

        $.fn.poll.defaults = {
                type: "GET",
                url: ".",
                success: function(){console.log("ola")},
                interval: 180000
        };
})(jQuery);