The following images:

chat_icon_action.png
chat_icon_error.png
chat_icon_notice.png
chat_icon_topic.png
cross-small.png
user.png
user_operator.png
user_voice.png

Copyright  2009 Yusuke Kamiyamane. All rights reserved.
The icons are licensed under a Creative Commons Attribution 3.0 license.

http://code.google.com/p/fugue-icons/