http://fenglish.ru/serial-friends-druzya-3-sezon-na-anglijskom-yazyke-s-subtitrami-eng-rus-subtitles/

You can right-click the plugin area and check the HTML code in the Inspector via Inspect Element.

• https://developer.mozilla.org/Tools/Page_Inspector

Check if there is a containing OBJECT tag with a type attribute.

Just to be sure that it isn't the Shockwave Flash plugin, make sure that you have installed this plugin and that it is enabled.

• Firefox/Tools > Add-ons > Plugins

You can find the latest Flash player versions for Firefox on this page:

• http://www.adobe.com/special/products/flashplayer/fp_distribution3.html

I checked the link given. There was no plugin at the pictured location.

How I have install Adobe Flash Player?

"As the super user, copy the extracted file, libflashplayer.so, to your Firefox installation directory's plugins sub-directory. For example, if Firefox is installed in /usr/lib/mozilla, use the command sudo cp libflashplayer.so /usr/lib/mozilla/plugins and then enter your super user password when prompted."

And what? It is finish?

I only see a log in form in that part of the page.

What do you see in the Inspector in the area where the plugin should be?

• https://developer.mozilla.org/Tools/Page_Inspector

this?

That is about the Shockwave Flash plugin.

• Firefox/Tools > Add-ons > Plugins

You can find links of the latest Shockwave Flash player for Firefox on this page:

• http://www.adobe.com/special/products/flashplayer/fp_distribution3.html

You can verify on the Adobe Flash Players Test Page that the Flash plugin is working and which version you have.

You get a (possibly colored) Lego block icon on the left end of the location bar that indicates that the web page uses a plugin that Firefox is possibly blocking. You can click this icon to see what it is about.

• https://support.mozilla.org/kb/why-do-i-have-click-activate-plugins