HALF ROUNDED CORNERS - PURE CSS

css codes :

background:#493c06 none repeat scroll 0 0;
   
-webkit-border-top-left-radius:5px;
-khtml-border-radius-topleft:5px;   
-moz-border-radius-topleft:5px;
border-top-left-radius:5px;

-webkit-border-top-right-radius:5px;
-khtml-border-radius-topright:5px;   
-moz-border-radius-topright:5px;
border-top-right-radius:5px;

half rounded corners actual result:

TOP

BOTTOM

ps: tested on firefox