Firefox 3, automatically reduces window size? How to stop auto-resizing?
 

Firefox 3, x86_64, Ubuntu

When I open Firefox 3, it opens fine and it works, but it automatically resizes the window size as I am using it, or as I am typing in an edit box. What causes it to automatically resize when I use it, and how can I disable that setting so that it will stay the same size window unless I resize it with the mouse? This is not the Beta release of Firefox, so it should not run off and do its own thing, should it?

If it happen when you're browsing website, it's related to javascript that included in webpages that downloaded, do it :
1. FireFox Menu -> Edit -> Preferences
2. Content Tab -> Enable Javascript Advanced Tab
3. Uncheck : Move or Resize existing windows