Greasemonkey is a plugin that allows you to customize the way a webpage displays using small bits of JavaScript.

There is nothing that will stop to write your own scripts.

The Greasemonkey add-on is cross-platform and it works on Mac OS X, Windows and Linux.

Requirements:

· Firefox 3.6 - 12.*

What's New in This Release: [ read full changelog ]

Enhancements:
· Expose information (including Greasemonkey version) to user scripts via GM_info.
· Track the install time of scripts. (This is designed to better support automatic updates for scripts ... still coming soon.)

Bug fixes:
· Editing script from the "New User Script" feature, to change any remote dependency (@icon,@require, @resource), could the script to malfunction. (#1504)
· Enabling/disabling scripts from the status bar menu (Firefox 3 only).
· Incompatibility with GreaseFire.
· Failures during "Check for Updates" from the Add-on manager.