Sharpies + t-shirts + washing machines

[yellowsocks.livejournal.com]

Recently I was at a big youth gathering and I got all the new people I met to write on a plain white t-shirt with permanent colored Sharpie's, but the shirt really needs to be washed, and I'd like to be able to wear it again. I'm curious as to how I go about washing it though. Is there something I can do to prevent the marker from disappearing completely? I expect it to fade, but I don't want to lose the messages entirely. Any suggestions?