difference between myfaces and jsf

HI,i would like to know the main differenec between myfaces and jsf. In our project we are planning to use myfaces. so i have to take a session on what are the advantages of using myfaces over JSF. Please help me
[226 byte] By [KrishnaSa] at [2007-11-27 2:15:00]
# 1
JSF is a specification.MyFaces is an *implementation* of JSF.
rlubkea at 2007-7-12 2:11:18 > top of Java-index,Enterprise & Remote Computing,Web Tier APIs...