You can also try these related scripts:

• Nico Auto Play - Auto play mylist.
• Inline images on a Niconico News article page - Converts image links on a Niconico News article page to inline images.
• Append Tag Searching Tub - Adds “Keyword”, “Tags”, “My List”, “Images” and “Live” search tabs to all of the Niconico search boxes.
• Clone Turning Page Button in nicovideo - Also shows the pagination on the top of Nico Live search r###lt, Lives by Category page, and Nico Video user page.
• [niconico video] Add the "Add My List" button to search r###lt page - Add the "Add My List" button to niconico video search r###lt page