Two western Wisconsin men made court appearances in La Crosse County Circuit Court Thursday to face child sex charges.  Forty-two-year-old Robert Mattingley of La Crosse was charged with use of a computer to facilitate a sex crime and attempted sexual assault of a child.  Fifty-five-year-old Michael Connelly of Onalaska was arrested on the same charges, but there is additional paperwork to be completed before a criminal complaint is filed in his name.  Mattingley was arrested when he set up a meeting with who he thought was a 14-year-old girl.  He was met by Holmen police.  Details of Connelly’s arrest weren’t released.