Text dissapearing

Hi. I wonder how i could make text that appear and disappear like gta´s games.I want if the character go into a bathroom, appear a message (by trigger,I guess)showing ¨bathroom¨for a certain time.

There’s a script on the unity wiki for fading, that might help do what you’re looking for? If added to a trigger and some GUI text.

there is a script on the Wiki :
http://www.unifycommunity.com/wiki/index.php?title=MessageDisplayer

Thanks. I try to use this script but I can´t understand how works, I mind, with triggers.