This is what i am talking about if any of you wanted a screenshot.

You can inspect and manage the permissions for all domains on the about:permissions page or for the domain in the currently selected tab by clicking the "Site Identity Button" (globe/padlock) on the location bar and "More Information" to open "Page Info" and go to the Permissions tab.

• https://support.mozilla.org/kb/how-do-i-manage-website-permissions
• Tools > Page Info > Permissions

You can also check if click-to-play is enabled and disable it when necessary.

• plugins.click_to_play = false
• http://kb.mozillazine.org/about:config

• https://wiki.mozilla.org/Opt-in_activation_for_plugins

@cor-el your reply kinda didn't help. I don't have click to play on at all and i just want to know, is there a way to hide that lego icon thing that appears next to the back button.

Did you check the plugin settings in "Tools > Page Info > Media" while being on a website that shows this icon?

** Speculation Follows **

Are you using the click-to-play feature (toggled plugins.click_to_play preference in about:config from false to true)? Firefox 24 changed this feature: instead of having the click feature be inside each individual instance of the Flash player (for example), it now is set on a site-by-site basis. That might explain the new icon, since otherwise it would not be obvious how to switch the setting. I guess it's too obvious now...

Yes I have done that.

jscher, why would they do that? The beauty of a plugin controller is to be able to pick which items you want to load and block the rest on a page. With this new method, you have to block the plugin to stop it from playing and then click the placeholder when ready to view the item. That is just crazy! This thing is on a site-by-site basis, not even a page-by-page basis?

I hope SeaMonkey is not going to do the same thing with its plugins.click_to_play.

Hi finitarry, there are a variety of use cases... This article has more background on the change: Firefox 24: Restore Click to Play per element | Ghacks.

Actually, I just saw this "lego" piece for a page using Silverlight, and I do not use click-to-play.

It would not be difficult to suppress the little icon using a style rule (userChrome.css or Stylish extension) but this would leave a slim notification area (second frame of attached screen shot). This could be suppressed entirely, but I can't think of a way to suppress it conditionally for some notifications but not for others -- and there are many (third frame of attached screen shot). Perhaps someone else has an idea about that.

Thanks for the link. I got the extension recommended by that page and it does work.

Is there anyway to hide the notification icon for plugins that have been approved for sites? I tried hiding the icon with Stylish, but unless I hide all notifications, it leaves a blank space in the navigation bar for sites that use a plugin. I don't need or want to see the gray icon reminding me that I've allowed a plugin to run.

Hi noOneHere81, if your rule is display:none that will leave a narrower space than visibility:hidden (as shown in my earlier screen shot), but I don't know whether a style rule can be crafted to hide the entire notification area based on the icon displayed in it.

Try the following rule -- the negative margins zap the notification area:

@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);
/* Gray icon saying plugin is active and providing option to block */
#plugins-notification-icon{
  width: 0px !important;
  margin-left: -5px !important;
  margin-right: -5px !important;
}

To remove the site's permission to run a plugin, you have the alternative of accessing the Permissions tab of the Page Info dialog. To call up that dialog, you can choose one of these methods:

• Click the site identity icon (globe or padlock) > More Information
• Right-click the page > View Page Info
• Tools menu > Page Info

Where does one put that code?

Custom style rules can be applied using two different approaches:

• Stylish extension: https://addons.mozilla.org/en-US/firefox/addon/stylish/
  • Creates a new blank style, then paste the rule in.
  • Stylish user community: http://userstyles.org/

• userChrome.css: http://kb.mozillazine.org/UserChrome.css
  • Manual editing example: https://support.mozilla.org/en-US/questions/967203#answer-470080
  • ChromEdit Plus extension: http://webdesigns.ms11.net/chromeditp.html (I haven't tried this myself)

Note: Stylish is real time, userChrome.css edits require a restart.

I added that code and it ALMOST works. It takes the lego out of the address bar but moves about 10-10px of it to the space between the address and the first button to the left of it (in my case the home button). Any way to actually get rid of it instead of masking it partially?

Hi FrogSteaks, if I move the Home icon to the left of the address bar, I need to increase the negative margin adjustment to -6px on each side. However, the icon is not visible at all for me and the notification area never escapes outside the address bar.

Can you post a screen shot of your address bar?

Note: I am using the default theme. The background of the Navigation toolbar is not transparent.

Sorry my replies are delayed. Another new feature of FF is causing me to log into every site each time I leave it whether r not I have saved passwords or tell the site to remember me. Ah I so LOVE being protected from myself! ANYWAY, I moded the css to -6 and still no help. here is a snippet of screen from a standard site and youtube. When i load youtube, for a split second the favicon appears and with no hint of the lego but right after the partial lego appears. You will see the issue in the red square.

Hi FrogSteaks, Firefox should still store cookies until the end of the session (or until expiration if you allow that); you'd need an extension to crumble them when you navigate away from them for a while or close the tab.

My style rule isn't fully compatible with whatever theme you are using. If I get time to test with that theme, I will. What theme is it?

This works for me better on Linux (no shifting of the SIB button when switch tabs)

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

#plugins-notification-icon {
width:0px !important;
margin-left:-6px !important;
margin-right:-7px !important;
}