The "Glee" family is mourning the death of actor Mark Salling.<br />Heather Morris, who played Brittany on the hit Fox show, posted a tribute to Instagram Friday in response to Salling's suicide.<br />The LA County Coroner's Office ruled Mark's death a suicide on Thursday and listed asphyxia by hanging as the cause of death.<br />Salling pleaded guilty to possession of child pornography in December and was awaiting sentencing in March. <br />
