John and Patsy Ramsey have posted a psychic's composite sketch of a suspect in their daughter's murder on their Internet site. The sketch is based on the work of the late psychic Dorothy Allison, who claimed to have assisted police investigations. Allison, who died last year, came up with her vision of the suspect during a 1998 appearance on a network television show. Boulder Police Chief Mark Beckner declined to comment on the psychic's work. The Ramseys have launched a campaign they say is aimed at finding the killer of 6-year-old JonBenet, whose body was found in the basement of her Boulder home on Dec. 26, 1996.