Skins - knowing if it has a pre-defined size or is dynamic

[kurtbarker]

Hey guyz

how do you know if a Style has a pre-defined width or will dynamically adjust to your resolution?

I only install skins that have a dynamic width, and so many of them aren't and I don't know how to tell before installing

So the questions are:
Can you tell if a skin has a fixed width or not before installing
Can you change a skin from a fixed width to be dynamic, and is it hard

If no, then can we use this thread for people to list skins that they know have dynamic widths ;)

Thanks guyz