SUBROUTINE surface(v,rij)
USE PES_Module
!
	implicit none
!-----------------------------------------------------------------------
! This routine supplies the potential energy surface for the
! reactive scattering codes.
!
! On entering: The arrary rij contains the internuclear distances
!              in units of bohr (NOT mass scaled).
!
! On Exit:     The variable v is the value of the potential energy
!              surface in Hartree atomic units.
!
!
!-----------------------------------------------------------------------
real*8 rij, v
dimension rij(3)
character(LEN=25) potname
!-----------------------------------------------------------------------
!  The character string potname must contain a string that uniquely
!  specifies the potential energy surface to be used.
!-----------------------------------------------------------------------
data potname/'H3G  CCI         PES     '/
!data potname/'H3E  CCI         PES     '/
!-----------------------------------------------------------------------
! Check for correct potential energy surface specification.
!-----------------------------------------------------------------------
if(PES_Name.ne.potname)then
write(6,*)'The potential energy surface name ','does not match',' the name in the potential energy surface routine.'
write(6,304)PES_Name,potname
304   format(1h ,2a25)
write(6,*)'***error***: Execution stopped in ','routine surface'
stop
end if
!-----------------------------------------------------------------------
! This call to surfac supplies the potential energy surface
! for the particular system of interest.
!-----------------------------------------------------------------------
call prepot
call pot(rij,v,1)
!v=v-0.1744749989649372d0
return
ENDSUBROUTINE Surface