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

Solution 1:

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

Solution 2:

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