What To Note

with FireFox 3.5.1 :

These dynamic CSS functions do not work when they are in a frame (and do if not).
  1. Scrolling the window
  2. Setting a class's style
  3. Enable/Disable a style
  4. Get a Style's property value

with Chrome :

Regardless of being framed or not (or version) this does not work: This was an issue in some prior 3.0.x beta versions:

For testing, earlier versions of these browsers can be downloaded from: