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.