I'm working on some project currently in which I'm using LESS, CSS3 and some other "fancy" technologies. I have some piece of code which calculate height for me:
height: -moz-calc(100% - 40px);
I also use -moz-calc in couple other places to calculate some stuff. The problem is to make it working crossbrowser (O, Safari, Chrome, IE8+). It's kinda tricky even when I try to do it via JS (jquery), but some cases are really tricky unfortunately. So I'm looking for some kind of bullet proof solution with automatic updates, just like it was CSS' calc().
http://caniuse.com/calc
https://developer.mozilla.org/en/CSS/calc
-webkit-calc
(Available in the Chrome 19 Dev build, Should be available in the next Safari)calc
(IE9)---
(Opera does not support it yet)