Appnr

Javascript/plugins permissions manager for Iceweasel and Iceape

This extension brings a powerful control over the way external scripts or
embedded programs, such as Java or Flash, are loaded.

By blocking scripts and/or plugins, it improves security and disables annoying
behaviours caused by malicious scripts.

When a script is blocked, you are notified, and you can unblock a site or a
page, either temporarily or permanently. You can then set a whitelist of
trusted sites based on url or on domain name.