Hi, when i am using jsf tags in the popup page i am getting error.

my pop page code is :
Java Code:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"  pageEncoding="ISO-8859-1"%>
    <%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %> 
	<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%> 
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">


<f:view > 
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>

</head>
<body>

<form name="form1" action="">



<table width="100%" border="0" class="tablesorter" cellspacing="1">
<tr>
<td>Enter Comments</td>
<td><textarea name="comments" id="comments"></textarea></td>
</tr>
<tr>
	<td colspan="2"><input type="submit" id="sub" value="Submit" class="button"/></td>
</tr>
</table>
</form>
</body>
</html>
</f:view>

i am getting the following error

Java Code:
Stacktrace:
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:451)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:355)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

root cause

javax.servlet.ServletException: Cannot find FacesContext
	org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:841)
	org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:774)
	org.apache.jsp.application.operatorint.comments_jsp._jspService(comments_jsp.java:184)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
Please can any one help me?