Kifu for flash is copyrighted by 柿木義一. Mr. Kakinoki allows use of the software and its graphics outputs without any restrictions.

Some pages uses graphics generated from BCM SHOGI by Bernhard Maerz. This is unrestricted freeware.

More recent shogi boards uses shogi pieces and board graphics under creative common license. See below

Shogi Resource by muchonovski is licensed under a Creative Commons 表示-非営利 2.1 日本 License.
Based on a work at www.muchonov.com.

Javascript animations of shogiboard using either BCM shogi outputs or shogi piece graphics from the above is my own concoction. you are free to reverse engineer (or google github with a2life as user name for source code)