The background is copied from the gorgeously illustrated web site of Osel Shen Phen Ling, Tibetan Buddhist Center, Missoula, Montana, USA. They ask only that credit be given and a link to their site provided by anyone who wants to use their illustrations.
The Om Mani Padme Hum prayer wheels and the red stationary prayer gifs at the top of this page are copied from
The large picture of the Bodhisattva of Compassion (Chenrezig/Avalokitesvara) is taken from a web page which I have lost track of. If anyone knows the origin of this jpg file, please inform me, so that I can credit the source.