.tr {
position:relative;
background: url(tr.jpg) no-repeat right top;
background-color:#FFFFFF;
margin:0;
padding:0;
height:100%;
}

.tl {
position:relative;
background: url(tl.jpg) no-repeat left top;
margin:0;
padding:0;
height:100%;
}

.bottomright {
position:relative;
background: url(br.jpg) no-repeat right bottom;
margin:0;
padding:0;
height:100%;
}

.bl {
position:relative;
background: url(bl.jpg) no-repeat left bottom;
margin:0;
padding:0;
height:100%;
}

.content {
position:relative;
margin:0;
padding:17px;;
overflow:hidden;
height:100%;
}