Calculating correct map extent/image

[Burkhard Sell]

hello,
  we are using a java applet to communicate with the mapserver.
  
  for example if we zoom, we send the new map extent to the map server,
and
  get a image back.

  but problem is, that the extent of the image is not the same as the
requested
  extent, because the server fits it to the screen ratio.
  what must we do to calculate/set the correct extent of the returned
image?
		
  is there any way to get the data calculated by the server back to the
client?

we hope anybody can help :-))

Burkhard Sell


____________________________________________
Burkhard Sell
Spektra Informationssysteme GmbH
Lenestrasse 3a
39112 Magdeburg

phone: +49 (0)391/6115121
mail:  sell at spektra.de
web:   www.spektra.de