Firefox 31 was released couple of days ago as I am writing this. If you are using SmarterMail to manage your email accounts, you may have noticed the issue with pop up window in SmarterMail.
2. Take the backup of existing Resize.js file.
2. Open Resize.js with a text or code editor.
3. Find innerHeight and replace it with innerHeight2. There should be three instances of that string.
4. Save the file.