I do not know how much experience you have with RichFaces 4.x, but I would like to encourage you to firstly start with something really simple:
e.g. generate project from maven archetype: richfaces-archetype-simpleapp
and to compare whether you are doing the same in your application, then continue with more complex examples, showcase etc.
Have you resolved you issue ?
Thank you for response
I have resolved issue by adding <h:head> in xhtml.
Thanks again !!!