With this script enabled in Firefox 9.0.1, the back button is broken after following a Google search result. To reproduce:

1) Perform a Google search (for instance, "autocomplete wiki")

2) Follow one of the result links (for instance, the Wikipedia article on Autocomplete)

3) Hit the back button. The browser momentarily goes to the intermediary Google search redirector page, and then returns to the Wikipedia article. In order to successfully return to the Google results page, the browser now needs to go back two history states in quick succession, effectively disabling the simple functionality of the back button in this state.

I would guess that this is as a result of the location.href running at the top of the script, which may interfere with the Google intermediary redirect page.

Where I work I have to manage accounts on a lot of different sites with different usernames and passwords, and having to stop and find a list of passwords just to log in was awful. This script took a good chunk of awful out of my life.

Finally I, rather than the website I'm visiting, get to decide whether my computer is secure enough to store a password locally. This script works perfectly on all the banking and webmail sites that I use. It has also most likely increased my security by allowing me to use strong and unique (but hard to type and remember) passwords on sites that disable autocomplete. However, before having firefox autologin to all your bank accounts and other high security sites, at least consider using a master password on firefox's password manager.

Thanks for the script Matt!

This single script must have saved me and many others hundreds of hours of time by automating the entering of IDs and passwords from my Firefox password saver. Really makes things easy when logging in to those annoying web sites where autocomplete is disabled.