Demi Moore and Michael Douglas have signed on for the leads in Warner Bros.’ feature film “Disclosure,” according to sources. Barry Levinson has already been attached to direct the film.Based on Michael Crichton’s bestselling novel, “Disclosure” tells the story of a female executive charged with sexual harassment by a male co-worker who is also her former lover. Warner Bros. outbid Fox, Universal and TriStar for the property. The studio paid Crichton roughly $ 3.5 million, which is said to include the book fee, other incentives, bonuses and a producing fee. Warner Bros. would not confirm the casting, nor would it acknowledge that Levinson will probably direct the film. Nevertheless, sources familiar with the project suggest that Douglas will tackle the pic before segueing into Carolco’s eye-patch-and-cutlass epic, “Cutthroat Island.” TheCrichton film is skedded to go before the cameras in May, while “Cutthroat” will probably get under way come fall. Moore’s most recent film, Paramount’s “Indecent Proposal,” grossed more than $ 250 mil worldwide; the most recent Douglas vehicle, “Falling Down,” nabbed $ 95 mil in worldwide B.O. Crichton isn’t a slouch at the box office, either; nor is he a stranger to bestseller lists. Author of the nearly $ 1 bil fetching “Jurassic Park,” Crichton’s other novels that have made it to the big screen include “The Andromeda Strain” and last summer’s Fox pic “Rising Sun.” “Disclosure” is in the top 10 on the bestseller lists.