下面的jsp代码，用dreamweaver打开， 为什么出现乱码 ？？

上面的是乱码， 下面的是用editplus打开的
<%@ page contentType="text/html; charset=GBK" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/tms.tld" prefix="tms" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<%@ page import="com.dure.resume.form.ResumeBasicForm"%>
<%@ page import="com.dure.resume.form.ResumeNavigator"%>
<%
ResumeBasicForm rbForm = (ResumeBasicForm)request.getAttribute("ResumeBasicForm");
%>
<html>
<head>
<title>修改简历基本信息</title>
<link rel="stylesheet" href="./css/style.css" type="text/css">
</head>
<script language='JavaScript'>
<!--
function click_submit(){
if(checkForm()){
document.ResumeBasicForm.PAGE_ACTION.value="UPDATE";
document.ResumeBasicForm.submit();
}
}
function Calendar_Popup(obj){
var param=new String();
param = ""+obj.value;      
    var a = window.showModalDialog("./component/calendar_popup.htm?"+param,"","dialogWidth:152px;dialogHeight:220px;right:1;resizable:yes;status:0;help:0;");
if(a==undefined){
obj.value="";
}
else{ 
obj.value=a;
}
}
function initForm(){
form = window.document.forms[0];
form.elements[0].focus();
}
-->
</script>
<body>

<table width="100%">
<tr>
<TD align="center" width="25%">
&nbsp;
</TD>
<TD align="center" width="25%">
<input value="确定修改" type="button"  NAME="btn_submit" onclick="return click_submit();"
class="button_1"
onmouseover='this.style.color="#3399ff";'
onmouseout='this.style.color="#000000";'>
</TD> <TD align="center" width="25%">
&nbsp;
</TD>
</TR>
</table>
</body>
</html>