D=`./xdrag`
win=`echo $D | head -n1 | sed 's/ .*//'`
X0=`echo "$D" | head -n1 | sed 's/[^ ]* //; s/ .*//;'`
Y0=`echo "$D" | head -n1 | sed 's/.* //;'`
X1=`echo "$D" | tail -n1 | sed 's/[^ ]* //; s/ .*//;'`
Y1=`echo "$D" | tail -n1 | sed 's/.* //;'`

DX=$(($X1 - $X0))
DY=$(($Y1 - $Y0))

./xmoveby $win $DX $DY