My guess is you were using an add-on for that. You can check for add-ons disabled due to the upgrade here: orange Firefox button ''or'' Tools menu > Add-ons > Extensions The enabled extensions are listed first, then the disabled one (grayed out). You could check for an update to that add-on. If none is available just yet, or if support has been discontinued, you could search for another one. They tend to have names similar to autodial or speeddial.