Ta ai um exemplo:
<html>
<head><title>EMPRESA TESTE</title></head>
<body>
<table width="800" border="0" align="center">
<tr>
<td colspan="3"><%@include file="/topo.jsp"%></td>
</tr>
<tr valign="top">
<td width="161" rowspan="1" align="center"> <%@include file="/menu.jsp"%> </td>
<td width="465" rowspan="1" align="center">
<%
String strMenu = request.getParameter("menu");
if(strMenu == null)
{
%><%@include file="/principal.jsp"%><%
}
else if(strMenu.equals("logar"))
{
%><%@include file="/cadastros/logar.jsp"%><%
}
else if(strMenu.equals("empresa"))
{
%><%@include file="/aempresa.jsp"%><%
}
else if(strMenu.equals("filiais"))
{
%><%@include file="/nossaempresa.jsp"%><%
}
else if(strMenu.equals("localizacao"))
{
%><%@include file="/localizacao.jsp"%><%
}
else if(strMenu.equals("dicassaude"))
{
%><%@include file="/dicasdesaude.jsp"%><%
}
else if(strMenu.equals("consciencia"))
{
%><%@include file="/consciencia.jsp"%><%
}
else if(strMenu.equals("tecnologia"))
{
%><%@include file="/tecnologia.jsp"%><%
}else if(strMenu.equals("receitadia"))
{
%><%@include file="/receitadiacompleta.jsp"%><%
}else
{
%><%@include file="/principal.jsp"%><%
}
%>
</td>
<td width="142"><%@include file="/enqueteAndReceita.jsp"%></td>
</tr>
<tr>
<td colspan="3"> <%@include file="/rodape.jsp"%> </td>
</tr>
</table>
</body>
</html>