When I say I found the best rounded corner solution, you have to trust me, cause I have tried numerous solutions and scripts. Finally I found one works on all browsers, including stupid IE !!

JQuery Curvy Corners

The author recently updated the plugin:

As from 2.0.x, CurvyCorners allows you to put rounded corners on your page elements using CSS.

This means CSS3 for mozilla and safari will work on IE  as long as you link the Curvy Corners plugin. You don’t event need to write anything in java script !!

CSS3

.rounded {
  -moz-border-radius-topleft:3ex;
  -moz-border-radius-bottomright:3ex;
  -webkit-border-top-left-radius:3ex;
  -webkit-border-bottom-right-radius:3ex;
}

Check it out!!