.octopus {background-color: #F4F4F4; }
.north { background: url(images/north.png) repeat-x top; }
.east { background: url(images/east.png) repeat-y right; }
.south { background: url(images/south.png) repeat-x bottom; }
.west { background: url(images/west.png) repeat-y left; }
.ne { background: url(images/ne.png) no-repeat top right; }
.se { background: url(images/se.png) no-repeat bottom right; }
.sw { background: url(images/sw.png) no-repeat bottom left; }
.nw { background: url(images/nw.png) no-repeat top left; padding: 5px;  }