Yes, e.g. the booking example uses facesmessages to display validation messages for a input onblur event. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4096486#4096486 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4096486