Yo lo baje hace tiempo y esta poderoso
, podes configurarlo para ke te muestre distintos formatos de fecha y para ke aparezca en diferentes idiomas.
Tambien hay otras librerias muy buenas para hacer cosas interesantes como grupos de paginas, menus flotantes, mostrar y ocultar paneles, crear ventanas flotantes con CSS, todo esto hace los Sitios Web muy dinamicos
Aca les dejo algo sobre esa libreria
The X Library
X is not a framework. It is a collection of loosely-bound, cross-browser, Javascript functions and objects. It is intended to be a resource from which you pick and choose - you do not have to include the entire library in your application. It contains core DOM/Style functions, unobtrusive enhancements, utility functions, objects such as menus and tab panels, and also has some experimental stuff. I've been developing this library since 2001 (I started its predecessor around 1999). Thanks to thousands of people like yourself X has been extensively tested on a wide range of operating systems and browsers. Thanks to your contributions X continues to improve, grow and evolve.
The download links for X are on the top of the Toys page.
X is distributed under the terms of the GNU LGPL - in other words it is free, even for commercial projects. However, there are a few limitations and requirements. Please read more about it.
El sitio para bajar las librerias
http://cross-browser.com/
