.bg_x-1_y-r {  background-repeat: repeat-y}
.bg_x-r_y-1 {  background-repeat: repeat-x}
.bg_x-1_y-1 {  background-repeat: no-repeat}
.bg_x-r_y-bottom {  background-repeat: repeat-x; background-position: bottom}
.bg_x-right_y-r {  background-repeat: repeat-y; background-position: right}