Some of these PNG icons are modified from Mark James' Silk icon set 1.3, 
found here: http://www.famfamfam.com/lab/icons/silk/
which is released under the Creative Commons Attribution 2.5 License.

http://creativecommons.org/licenses/by/2.5/

The Icons taken from Silk and modified by mike-labo:

tab_remove.png from cross.png
online*.png
away*.png
offline*.png

mike-labo's other modications are from the original museeq icons.
