ANY "original work" that you create is copyrighted at the moment it is saved to disk or printed out. Copyright is a form of protection provided by the laws of the United States to the authors of "original works", whether or not the work is published.
It gives the owner the exclusive right to do and to allow others: To reproduce the work (including place on web pages), To distribute copies of the copyrighted work (including place on web pages),
To display the copyrighted work publicly (including place on web pages), and To create derivative works based upon the copyrighted work (meaning using an original, or parts of it, in a new work)
It is illegal to violate any of the rights provided by the copyright laws making the violator subject to SEVERE PENALTIES as well as probable confiscation of all hardware and software used in the theft.