I'm a newbie to Tomcat. I set up a virtual host according to the book "Tomcat: The definitive guide". when i entered the context "/admin" i saw several contexts when i expanded that virtual host. but those contexts are actually the directory names in /usr/loal/tomcat-instance(which is my $TOMCAT_BASE), such as "conf", "temp", "work", and so on. what should i do in order to prevent those direcotry appearing as context in my virtual host? please give me a hand. thanks!