.back1 {  background-image: url(back1.gif)}
.back2 {  background-image: url(back2.gif); background-repeat: repeat-y}
.back3 {  background-image: url(back3.gif); background-repeat: repeat-x}
.back4 {  background-image: url(back4.gif); background-repeat: no-repeat}


.mtop{margin-top:60px;}