Purpose of different "lib" in JBoss 5

Hi All,

There are three different "lib" folders in JBoss 5
1. /jboss-5.1.0.GA/lib
2. /jboss-5.1.0.GA/server/default/lib
3. /jboss-5.1.0.GA/server/default/deploy/myapp1.war/WEB-INF/lib

Can anyone please explain me the purpose of these three different "lib" folders and in which order and priority the Jars present in these folders are loaded?
and What happen if the same jar with different version is present in all the three "lib" folders and it is also used by our myapp.war and which will be given more priority.

Thanks

/jboss-5.1.0.GA/lib contains library file. You Should not change the contents in this Directory. These are Jar Files used by Jboss to Provide Services
/jboss-5.1.0.GA/server/default/lib contains dependent jar files needed by the files under /jboss-5.1.0.GA/server/default/deploy/
/jboss-5.1.0.GA/server/default/deploy/myapp1.war/WEB-INF/lib Contains lib Files used by your Application

Thanks Saahil for the reply but still some of my questions are unanswered like in which order and priority the Jars present in these folders are loaded?
and What happen if the same jar with different version is present in all the three "lib" folders and it is also used by our myapp.war and which will be given more priority.

Thanks

See http://community.jboss.org/wiki/JBossClassLoadingUseCases and http://community.jboss.org/wiki/classloadingconfiguration

thanks Jaikiran for the reply ...I have one more question that how can we make a deployement scoped and non scoped in JBOSS. I got these terms (scoped and non-scoped) from the link itself.