No injuries in a Janesville house fire.  Firefighters responded to a report of a kitchen fire a little after 3:00 a.m. Sunday at a home in the 400 block of North Pine Street.  Officials say everyone safely escaped the two-story, single-family home, but the kitchen was heavily damaged.  The home also sustained smoke and water damage throughout.  The cause is currently under investigation.  Damage estimates are just short of $100 thousand.