  Quarkonium suppression is one of the more useful observables to obtain
information about the hot medium created in ultrarelativistic heavy-ion
collisions. In this manuscript, we discuss a simple way to implement both the
initial-state effects and the hot-medium evolution, and to compute the
quarkonium nuclear modification factor if the survival probability for a bound
state at a given energy density is known. Based on the Glauber model, the
temperature of the evolving medium and the centrality dependence of the nuclear
modification factor will be analysed.
