GIF images have been downloaded from the following site.
http://katus-gifani.sakura.ne.jp/

kangaroo.png has been converted from kangaroo.gif using the following site:
http://images.my-addr.com/converter_gif_to_png_online_freeware_tool.php

True-type font files have been downloaded from the following site.
http://www.webpagepublicity.com/index.html
