.back {  background-image: url(img/back.gif); background-repeat: repeat-y; background-position: center}
.back2 {  background-image: url(img/back2.gif); background-repeat: repeat-y; background-position: center}
.gray12 {  font-size: 12px; line-height: 18px; color: #333333}
.gray10 {  font-size: 10px; line-height: 14px; color: #333333}
.bk12 {  font-size: 12px; line-height: 18px; color: #333333}