Youtube support with facebook module

This post is for ones who like to add youtube support with fb module, using facebook FBML.
This hoke works for me, I hope it will work for others as well.

/**
* The embedded flash displaying the youtube video.
*/
function theme_emvideo_youtube_flash($embed, $width, $height, $autoplay, $options = array()) {

.....

FLASH;
//added to support facebook <<<---------------------------HERE IS THE NEEDED CHANGE---------------------------
if(isset($_REQUEST['fb_sig_api_key'])){
$output = '';
}
}
}
return $output;
}