C print *,mod(c(3,i+nres),boxzsize),bordlipbot,bordliptop
c for each residue check if it is in lipid or lipid water border area
C respos=mod(c(3,i+nres),boxzsize)
C print *,mod(c(3,i+nres),boxzsize),bordlipbot,bordliptop
c for each residue check if it is in lipid or lipid water border area
C respos=mod(c(3,i+nres),boxzsize)