This is my second script for GreaseMonkey. As you can see previously, my script will help you to get the direct link from some of popular video sites such as YouTube, Google, MetaCafe, Yahoo, DailyMotion and more. The most important advantage of the script is that it will show a direct download link (on the top left corner of your FireFox browser) when you ARE IN any supported video sites. It means if you are interested in the video, you can click the download link immediately when you see it, or you can keep surfing another page without any annoyance since the download link just takes a small space on your browser area. Very convenient and useful :)
Below is the screenshot:

I'm still developing this script, so I would expect your comments soon.
Thank you for your visit.
anh_surprised.