Detecting height of dock and taskbar

[Claudi Cornaz]

Hi all

Is there a way to detect the height of the dock in OSX and of the 
taskbar in windows.

I try to create a complete set of routines to: create open and save 
documents (windows and mac).

While opening a document I want it to be completly on the screen (also 
the bottomRight so it's
possible to resize the doc) and have an offset for the topLeft from 
other open docs.
For this I need to know how much room to leave at the bottom for the 
dock or the taskbar.
I guess I need a shell command to do this, but unfortunatly I have no 
clue

I hope someone on this great and very usefull list has a solution.

Best wishes
   Claudi