How to get only one rounded corner with border-radius htc hack and MSIE v:roundrect?

Question

I have a problem with partially rounded corners. See the first working example for most browsers:

.box {
  display: block;
  width: 100px;
  height: 100px;
  bor         


        

Answer 1

I was able to get it to work with border-radius: 0 0 10px 10px; and htc from http://css3pie.com/

Answer 2

The other solution: border-bottom-right-radius:10px; not to make the CPU calculate unneeded border roundings