[ gpsdrive ] Map problem

[Petra Galuscakova]

Hello,
I`m working on addition of other map sources to gpsdrive. I`ve managed
downloading map from http://geoportal.cenia.cz/mapmaker/cenia/portal/.
But when I compare maps from geoportal and expedia.de, they don`t fit.
They fit in the centre, the scale is the same, but the maps look
shifted
at the corners. Here are exmaples: map from geoportal:
http://wingri.tym.sk/map_file0038.gif map from expedia:
http://wingri.tym.sk/map_file0037.gif comparison:
http://wingri.tym.sk/mapy-cr.gif

Where the problem could be? I`m not geographical expert, so I don`t
know, if they are using other projections or something else.

Thanks in advance,
Petra