project problem with Tomcat6 and seam 2.1.2

[jigneshmpatel]

I am trying to use projection as style sheet is not going to solve my problem. The code is as follows:
<rich:dataGrid value="#{category.getAllCategories(hbSession)}" var="category" columns="3" elements="9" width="600px">
            <rich:panel>
           <f:facet name="header">
                 <h:outputText value="#{category.catNm}"></h:outputText>
          </f:facet>
          </rich:panel>
         <h:dataTable value="#{category.subCategories}" var="subCategory"> 
               <!-- command link code goes here -->
        </h:dataTable>          
     
      </rich:dataGrid>

But I am getting error

 java.lang.NoClassDefFoundError: javax/servlet/jsp/jstl/sql/Result   

.
I do have jboss-el.jar in my lib folder then why this problem is coming. I am using tomcat 6 and seam2.1.2.