Thanks anemos and Thadk!
I uploaded the provisional version. I'm reading the obfuscated code on the way.

Icefreez.
I took screenshots for you. Thanks.

Fixed some bugs and
@rsanders, Buttons changed. Finally!

Hi hronir.
My environment cannot reproduce the bug. I won't fix this at the moment.
Thanks, anyway.

Because every page might have embedded flvs and links to youtube videos.

Hi hug, thanks for your interest in this script!
As you suggest, it does not work in Firefox Portable. There seems to be a problem with the page "about:cache".

Thanks AaronCompNetSys. I explained.

Hi Aaron 2. Please see http://ucnv.tumblr.com/post/24527664