.boxtop div {
font-size: 0;
height: 10px5px;
background: url(http://www.kavitakosh.org/kk/images/6/69/Nw.gif) no-repeat top left;
}
.boxbottom div {
font-size: 0;
height: 10px5px;
background: url(http://www.kavitakosh.org/kk/images/6/67/Sw.gif) no-repeat bottom left;
}