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How do you disable the Website is now in fullscreen mode everytime i move the mouse near the top?

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  • Last reply by jistjak

In fullscreen mode How do you disable the annoying pop up that appears every time I move my mouse near the top of the screen? I tried setting "full-screen-api.warning.timeout" to 0 but that did not work at all it still shows up. Some websites have options that are at the top of the screen, so avoiding the top of the screen is not an option.

In fullscreen mode How do you disable the annoying pop up that appears every time I move my mouse near the top of the screen? I tried setting "full-screen-api.warning.timeout" to 0 but that did not work at all it still shows up. Some websites have options that are at the top of the screen, so avoiding the top of the screen is not an option.

All Replies (3)

I can't help you with your problem. But,

Separate Security Issue: Update your Flash Player Note: Windows users should download the ActiveX for Internet Explorer. and the plugin for Plugin-based browsers (like Firefox).

Note: Windows 8 and Windows 10 have built-in flash players and Adobe will cause a conflict. Install the plugin only. Not the ActiveX.

Flash Player Version: Version 27.0.0.170

https://get.adobe.com/flashplayer/ Direct link scans current system and browser Note: Other software is offered in the download. <Windows Only>

https://get.adobe.com/flashplayer/otherversions/ Step 1: Select Operating System Step 2: Select A Version (Firefox, Win IE . . . .) Note: Other software is offered in the download. <Windows Only> +++++++++++++++++++ See if there are updates for your graphics drivers https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration

Try this code in userChrome.css.

Add code to the userChrome.css file below the default @namespace line.


@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* only needed once */

#fullscreen-warning { display:none !important; }


You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.

  • create the chrome folder (lowercase) in the <xxxxxxxx>.default profile folder if this folder doesn't exist
  • use a plain text editor like Notepad to create a (new) userChrome.css file in the chrome folder (file name is case sensitive)
  • paste the code in the userChrome.css file in the editor window
  • make sure that the userChrome.css file starts with the default @namespace line
  • make sure that you select "All files" and not "Text files" when you save the file via "Save file as" in the text editor as userChrome.css.
    otherwise Windows may add a hidden .txt file extension and you end up with a not working userChrome.css.txt file

I tried the userChrome.css method and restarted Firefox and the popup still shows. The website I am using to test it is "www.Totaljerkface.com" playing happy wheels in full screen. Creating and editing a level often requires me to move the mouse to any point of the screen and that popup shows for 5 seconds each time i get near the top.