[R] stl and the relative scale data-seasonal

[Berta]

I am trying to plot the time series decomposition using plot(stl..). 
Eventhough I understand why the scale of the 4 plots is better to be 
unequal, I would like to plot all 4  in the same scale (otherwise 
interpretation at a simple look may be misleading). Is there a way I could 
do so (easier than extracting all the components and plot 4 separate figures 
using 4 plot-comands)?

Thanks a lot in advance.

Berta.