  In this note, we introduce a relative (or Lagrangian) version of the Seidel
homomorphism that assigns to each homotopy class of paths in Ham(M), starting
at the identity and ending on the subgroup that preserves a given Lagrangian
submanifold L, an element in the Floer homology of L. We show that these
elements are related to the absolute Seidel elements by the Albers map. We also
study for later use, the effect of reversing the signs of the symplectic
structure as well as the orientations of the generators and of the operations
on the Floer homologies.
