CSS 3 in Internet Explorer

.box {
     border-radius: 15px;           /* Internet Explorer 6+ and Opera 10.5+ */
     -moz-border-radius: 15px;      /* Mozilla Firefox 2+ */
     -webkit-border-radius: 15px;   /* Chrome 2+, Safari 3+ */
     behavior: url(ie-css3.htc);
}

It does come with some minor limitations, however. For rounded corners, it will only work for the border-radius property, and not for corner-specific properties like border-top-left-radius. Also, box shadows cannot have any color other than black. Visit the site to view other limitations and workarounds.

I have already started using this script in sites for Atomic's clients. For example, the NAPO DFW chapter site now uses this script for the rounded corners of the email sign-up box on the front page. Be sure to look at it in Internet Explorer. =)