.rollback-button a 
{ DISPLAY: block; BACKGROUND: url(../images/icon-rollback.gif) no-repeat; WIDTH: 22px; HEIGHT: 22px; border: 1px solid #ffffff; }
.rollback-button a:hover { border: 1px solid #7f9db9; } 
.rollback-button-grey a 
{ DISPLAY: block; BACKGROUND: url(../images/icon-rollback.gif) no-repeat; WIDTH: 22px; HEIGHT: 22px; border: 1px solid #f6f6f6; }
.rollback-button-grey a:hover { border: 1px solid #7f9db9; }