Non-ajax GET/POST using jQuery (plugin?)

jQuery Plugin seemed to work great until I tried it on IE8. I had to make this slight modification to get it to work on IE:

(function($) {
    $.extend({
        getGo: function(url, params) {
            document.location = url + '?' + $.param(params);
        },
        postGo: function(url, params) {
            var $form = $("<form>")
                .attr("method", "post")
                .attr("action", url);
            $.each(params, function(name, value) {
                $("<input type="hidden">")
                    .attr("name", name)
                    .attr("value", value)
                    .appendTo($form);
            });
            $form.appendTo("body");
            $form.submit();
        }
    });
})(jQuery);