I used to have Firefox set as the default application for opening a JPG when clicking on it with a Windows 7 desktop. Suddenly that no longer is the case. I've gone to Control Panel, "Associate a file type with a specific program," but it no longer offers Firefox as an option. I tried adding it as an option with "Change Program: Other Programs" which allows me to set up Google Chrome as the default for opening JPGs, but it won't allow me to set Firefox.