Bale visited with little advance warning and also stopped by a makeshift memorial to victims near the movie theater that was showing “The Dark Knight Rises” when the gunfire erupted. Carey Rottman, one of those injured in Friday’s shooting, posted two photos of himself with Bale on his Facebook page. Janie Bowman-Hayes, assistant vice president of surgical services at sister hospital Swedish Medical Center, said she and co-workers were attending a luncheon at The Medical Center of Aurora to thank staff who tended to victims. “When we got there, then we found out he was there,” she said. Bale, humble and dressed casually in a black T-shirt and jeans, thanked the staff, shook hands and agreed to have his photo taken with employees, Bowman-Hayes said. “He just said he wanted to come to thank all of us because he has been thinking about this. He knows the whole world has been thinking about this,” she said. “He took it upon himself to come and thank us.” An online campaign had urged Bale to visit survivors of the shooting. Bale, joined by his wife Sibi Blazic, also stopped by a growing memorial near the theater and walked among the 12 crosses erected for each of the slain victims.