configuring jsf 2.0 on tomcat 6.x (with support to EL method parameters)

jsf2_on_tomcat6.txt

CAUTION: Method parameters will not work on Tomcat 6 with just the JSF 
JAR files. The expression language (EL) is not a part of JSF but instead 
defined in JSR 245 (JavaServer Pages). Method parameters are a feature of 
EL 2.2, which is not supported by Tomcat 6. In order to use the EL 2.2 features, 
obtain the JARs from http://uel.dev.java.net, add them to the WEB-INF/ 
lib directory of your web application, and add the following to your web.xml file: 
<context-param> 
<param-name>com.sun.faces.expressionFactory</param-name> 
<param-value>com.sun.el.ExpressionFactoryImpl</param-value> 
</context-param>