  Dynamical quantum groups constructed from a FRST-construction using a
solution of the quantum dynamical Yang-Baxter equation are equipped with a
natural pairing. The interplay of the pairing with *-structures, (unitarizable)
corepresentations and dynamical representations is studied, and natural left
and right actions are introduced. Explicit details for the elliptic U(2)
dynamical quantum group corresponding to the elliptic R-matrix for sl(2) are
given, and the pairing is calculated explicitly in terms of elliptic
hypergeometric functions. Dynamical analogues of spherical and singular vectors
for corepresentations are introduced.
