How to determine device in Web 2.0

[Michel_Bujardet]

@Daniel_Mullins

If the browsers are going to continue to be functionally different, then not allow to detect for it, you are just going to end up with code that does not work on some browsers.

Incompatibility usually affects older browsers. For instance Internet Explorer.
New browsers widely support new CSS commands.

Generating incompatible code is bad form.