$("form.datagrid table.datagrid tr.footer input[name=page]").livequery("keypress", function (e) {
    if (e.keyCode == 13) {
        var $submits = $(this).parents("form.datagrid").find("input:submit[name=pageSubmit]");
        console.log($submits);
        console.log($.nette);
        console.log($.nette.ajax);
        $.nette.ajax({}, $submits[0], e);
    }
});