Your game is also apparently named "Janitor Joe" as well as Jump Joe. It's rather difficult to find info on the game, or the sites I found were too horrible designed. None the less, I found "JANITOR JOE" in the Abandonware section of this site:
http://www.alex-soft.net/
Bear with it, it's kinda annoying to navigate. See if thats your game cause I can barely find any sort of info, or download.