@_Aerospace_Eng_Nov 20.2006 — #transparent isn't a valid CSS background color. Default is transparent anyways so just get rid of transparent and it should validate.
@ray326Nov 21.2006 — #It just seems to me that "left 100%" would mean "put the left edge of the background image just beyond the right edge of the container." I.e., put the background out of view to the right.