I knew this existed, but for the life of me I just couldn't find it again on the Net. Then, tonight, I ran across the file on one of my hard drives. I know this worked for me, I even changed some of the values for longer/shorter times, but I'm not sure what version(s) of the software it works with, and like I said, it's pretty much impossible to find anything about it on the Net. Anyway, use at your own risk...

File padhack.tcl attached