showimg question(s)

[darkriders_p2p]

ya, i have a couple questions, I made a rough chat system for a non-p2p server, and yes, i have a couple question(s).

I make it print out what you say to the other chatters (in this case myself :P) using showimg, and yes, i run into the problem of chat characters 'running' off the page. I am wondering if its possible to get the length of a showimg, so i can trim it down.
I though tokenize, but then relized it would be exactly the same problem, if someone entered extremely long sentences. If you can offer any help, please post :P