[R] combined graph

[bavorak@klobouk.fsv.cvut.cz]

I need to create graph composed of different plots (bar + area). See
attachment, I am sending an example of intended design.
Is it possible to plot one set as fitted line and add another one in the
column shape, as it is shown on the example? It is intended because of
hydrological convence where totals have been depicted as bars and
processes as lines or areas.

Thanks,

Tomas Bayer