function alternate_az(window_handle)
%This function handles switching between rotation and no rotation.
%On a button press in the Figure, this checks to see if there is a 
%String set up to deal with mouse motion, if yes, it removes it. 
%If no, it adds it. 

% I think there may in the futuer be a problem with blindly shoving 
% in a GCF for a handle, since there is no garuntee that I can see that
% says that the front window is the one that matlab thinks is the current 
% one. If that changes, there is a simple change that can be made to this
% function, and the setup one. Instead of passing the calling this with the 
% alternate_az(gcf) string, call it with ['alternate_az(',gcf,');']. 
% Similarly, one would have to change the alt_az call in this function.

%Eric Soroos
%10-21-95

motion = get(window_handle,'WindowButtonMotionFcn');

if max(size(motion)) <= 2
  set(gcf,'WindowButtonMotionFcn','alt_az(gcf)');
else
  set(gcf,'WindowButtonMotionFcn','');	
end;