cara eu consegui ajeitar o erro da pagina em branco, agora to com outro erro ... acredito que seja conflito entre as versoes do jsp ou servlet que sao diferentes nas duas versoes do tomcat. vou colocar o codigo da pagina .jsp e o codigo do erro quem sabe vocese me ajudam.
<%@ page language="java"
import="br.gov.ce.seplag.agenda.jdbc.DAO.*"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
<title>Index - Agenda</title>
<meta http-equiv="description" content="Index" />
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1" />
<style type="text/css">
<!--
.fontblack {
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
font-weight: normal;
color: #000000;
}
.botao {
color: #000000;
background-color: #cccc99;
font-family: Arial, sans-serif;
font-size: 10px;
font-weight: bold;
border: thin solid #999999;
}
.inputtext {
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
font-weight: bold;
background-color: #ffffee;
}
.fontwhite {
color: #FFFFFF;
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
font-weight: normal;
}
.fonttable {
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
color: #333333;
font-weight: normal;
}
#loading {
float: right;
font-size: 10px;
margin-right: 10px;
display:none;
}
-->
</style>
<link rel="stylesheet"
href="content/css/ui.datepicker.css"
type="text/css"
media="screen"
title="core css file"
charset="utf-8" />
<script type="text/javascript"
src="content/js/jquery-1.2.3.js"
charset="utf-8">
</script>
<script type="text/javascript"
src="content/js/ui.datepicker.js"
charset="utf-8">
</script>
<script type="text/javascript"
src="content/js/ui.datepicker-pt-BR.js"
charset="utf-8">
</script>
<script type="text/javascript"
src="content/js/functions.js"
charset="utf-8">
</script>
<script type='text/javascript'
src='/agenda/dwr/engine.js'>
</script>
<script type='text/javascript'
src='/agenda/dwr/interface/BusinessLogic.js'>
</script>
<script type='text/javascript'
src='/agenda/dwr/interface/AgendaManager.js'>
</script>
<script type='text/javascript'
src='/agenda/dwr/util.js'>
</script>
</head>
<body>
<script type='text/javascript' src='content/js/menu_edicao.js'></script>
<script type='text/javascript' src='content/js/menu_construtor.js'></script>
<br/>
<table width="%100" border="0" cellpadding="1" bgcolor="#d4d0c8">
<tr>
<th align="left" valign="baseline" bgcolor="#FFFFFF" scope="col">
<tr align="left" bgcolor="#6b696b">
<th colspan="6" class="fontwhite" scope="col">Cadastro de Escalas</th>
</tr>
<form id="form1" name="form1">
<table width="%40" border="0" cellpadding="1" bgcolor="#d4d0c8">
<tr>
<td bgcolor="#f7f7de" class="fonttable" width="%10">Data</td>
<td width="%10">
<input type="text" id="dateInput" value="Data" method="post" onchange="verificaEscalaData('dateInput')"></input>
</td>
<td bgcolor="#f7f7de" class="fonttable" width="%10">Perito</td>
<td width="%5">
<select name="peritoSelect" id="peritoSelect">
<option id="defaultSelect" value="defaultSelect">Selecione</option>
<% request.setAttribute("peritos",new JuntaDAO().getLista()); %>
<c:forEach var="peritos" items="${peritos}">
<option id="${peritos.id}" value="${peritos.id}">
${peritos.nome}
</option>
</c:forEach>
</select>
</td>
<td width="%5">
<input id ="btPeritoSelect" type="button"
onclick="selecionaPerito('dateInput', 'peritoSelect', 'tabelaEscala');"
value="Seleciona"></input>
</td>
<td>
<input id ="btLimpaEscala" type="button"
onclick="limpaEscala('tabelaEscala', '1', 'dateInput');"
value="Limpa"></input>
</td>
</tr>
</table>
</form>
</th>
</tr>
</table>
<form id="formEscala" name="formEscala" action="#">
<table width="%40" bgcolor="#d4d0c8" id="tabelaEscala" border="0" cellpadding="1" cellspacing="1">
<tr>
<td bgcolor="#f7f7de" class="fonttable">Data</td>
<td bgcolor="#f7f7de" class="fonttable">Perito</td>
<td bgcolor="#f7f7de" class="fonttable">Turno</td>
<td bgcolor="#f7f7de" class="fonttable">Hora (xx:xx)</td>
<td bgcolor="#f7f7de" class="fonttable">Atendimentos</td>
<td bgcolor="#f7f7de" width="1"></td>
</tr>
<tr>
<td colspan="5" bgcolor="#f7f7de" class="fonttable"><div align="center">Insere dados de escala.</div></td>
<td colspan="1">
<div align="right">
<input id ="btSalvaEscala" type="button" value="Salvar"
onclick="salvaEscala('formEscala','1','dateInput')"></input>
</div>
</td>
</tr>
</table>
</form>
<script type="text/javascript" charset="utf-8">
jQuery(function($){
$("#dateInput").datepicker();
});
</script>
</body>
</html>
org.apache.jasper.JasperException: Unable to read TLD "META-INF/c.tld" from JAR file "file:/C:/eclipse/workspace/agenda/web/WEB-INF/lib/standard.jar": org.apache.jasper.JasperException: Failed to load or instantiate TagLibraryValidator class: org.apache.taglibs.standard.tlv.JstlCoreTLV
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:51)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:409)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:181)
org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:182)
org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:420)
org.apache.jasper.compiler.Parser.parseDirective(Parser.java:483)
org.apache.jasper.compiler.Parser.parseElements(Parser.java:1433)
org.apache.jasper.compiler.Parser.parse(Parser.java:133)
org.apache.jasper.compiler.ParserController.doParse(ParserController.java:216)
org.apache.jasper.compiler.ParserController.parse(ParserController.java:103)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:153)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:314)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:294)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:281)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:566)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
eu to usando java EE 5.0