corners.css

.boxc {
padding:0px;
position:relative;
}
.boxc b.cn {
height:10px;
position:absolute;
width:10px;
}
.boxc b.tl {
background:transparent url(images/roundgray.png) no-repeat scroll 0%;
background-position:left top;
left:-1px;
top:-1px;
}
.boxc b.tr {
background:transparent url(images/roundgray.png) no-repeat scroll 0%;
background-position:right top;
right:-1px;
top:-1px;
}
.boxc b.bl {
background:transparent url(images/roundwhite.png) no-repeat scroll 0%;
background-position:left bottom;
bottom:-1px;
left:-1px;
}
.boxc b.br {
background:transparent url(images/roundwhite.png) no-repeat scroll 0%;
background-position:right bottom;
bottom:-1px;
right:-1px;
}

* html .boxc b.bl {
bottom:-2px;
}
* html .boxc b.br {
bottom:-2px;
}
* html .boxc b.cn {
background-image:url(roundwhite.gif);
font-size:1px;
line-height:1px;
}