Is there a way to make Firefox ignore invalid ssl-certificates?

Question

I am maintaining a few web applications. The development and qa environments use invalid/outdated ssl-certificates.

Although it is generally a good thing, that Firef

Answer 1

For a secure alternative, try the Perspectives Firefox add-on

If this link doesn't work try this one: https://addons.mozilla.org/en-US/firefox/addon/perspectives/