Which browsers still support CSS expressions

From a blog:

The basic idea with CSS expressions is that you will have calculation and dynamic values for properties in the CSS code, something that people have found very useful. A simple example can be implementing max-width behavior in IE 6:

width: expression(document.body.clientWidth > 1100)? "1100px" : "auto";

This is the first time I read about them. It seems IE used to support CSS expressions but dropped them in IE8. What other browsers still use them and are they generally a good or bad thing?

The blog post I got this from says the alternative is Javascript, but I thought CSS was more supported and therefore better than Javascript.