The fullscreen button in my Youtube in AllVideos is not working.  Is there a parameter that must be added to the code between the brackets to allow it?

that's easy to fix:

go to plugins/content/jw_allvideos and locate jw_allvideos_sources.php.

there you find the following code:

// YouTube
"youtube" => "
<span style=\"width:{VWIDTH}px;height:{VHEIGHT}px;\" class=\"allvideos_player\" title=\"JoomlaWorks AllVideos Player\">
<object type=\"application/x-shockwave-flash\" style=\"width:{VWIDTH}px;height:{VHEIGHT}px;\" data=\"www.youtube.com/v/{AVSOURCE}&hl=en&fs=1\">
<param name=\"movie\" value=\"www.youtube.com/v/{AVSOURCE}&hl=en&fs=1\" />
<param name=\"quality\" value=\"high\" />
<param name=\"wmode\" value=\"{TRANSPARENCY}\" />
<param name=\"bgcolor\" value=\"{BACKGROUND}\" />
</object>
</span>


replace it with:



// YouTube
"youtube" => "
<span style=\"width:{VWIDTH}px;height:{VHEIGHT}px;\" class=\"allvideos_player\" title=\"JoomlaWorks AllVideos Player\">
<object type=\"application/x-shockwave-flash\" style=\"width:{VWIDTH}px;height:{VHEIGHT}px;\" data=\"www.youtube.com/v/{AVSOURCE}&hl=en&fs=1\">
<param name=\"movie\" value=\"www.youtube.com/v/{AVSOURCE}&hl=en&fs=1\" />
<param name=\"allowFullScreen\" value=\"true\" />
<param name=\"quality\" value=\"high\" />
<param name=\"wmode\" value=\"{TRANSPARENCY}\" />
<param name=\"bgcolor\" value=\"{BACKGROUND}\" />
</object>
</span>