Imagen:
Enlaces:
https://addons.mozilla.org/ES-ES/firefox/addon/greasemonkey/
Descripción:
Allows you to customize the way a web page displays or behaves, by using small bits of JavaScript.
Hundreds of scripts, for a wide variety of popular sites, are already available at http://userscripts.org.
You can write your own scripts, too. Check out http://wiki.greasespot.net/ to get started.
