#header_image
{
  background-image: URL('tpa_header_participants.jpg');
}
#participants
{
  background-image: URL('../im/participants.jpg');
  background-position: 0px -30px; 
}
#page_box
{
  background-image: URL('pb_bg.jpg'); 
}
#dec_box
{
  background-image: URL('dec.jpg');
  background-position: bottom right;
}