asp 提交表单后,采用alert弹出消息框中文出现乱码
完整贴出代码:
<!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">
<head>
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
     <title></title>      
     <link href="cs.css" rel="stylesheet" type="text/css" />
<script  type="text/javascript" language="JavaScript">  
// 表单提交客户端检测
function doCheck(){
	if (document.form1.projname.value==""){
		alert("项目名称不能为空!");
		document.form1.projname.focus();
		return false;
		}
	if (document.form1.contact.value==""){
		alert("联系人不能为空!");
		document.form1.contact.focus();
		return false;
		}
	if (document.form1.tel.value==""){
		alert("电话号码不能为空!");
		document.form1.tel.focus();
		return false;
         }
     if (document.form1.email.value == "") {
         alert("邮箱地址不能为空!");
         document.form1.email.focus();
         return false;
         }
	if (document.form1.summary.value==""){
		alert("项目说明不能为空!");
		document.form1.summary.focus();
		return false;
         }
     //document.form1.submit();  
	}
     // 表单提交客户端检测
     function doSubmit(){
		document.form1.submit();
	}
	function PreviewImgSingle(imgFile)
     {
         var picname,prev_picname;
         var newDate = new Date();
		prev_picname = newDate.getFullYear() + ""+(newDate.getMonth() + 1) + "" + newDate.getDate() +"" + newDate.getHours() + "" + newDate.getMinutes() + "" + newDate.getSeconds() +"";
         picname =imgFile.value.substring(imgFile.value.lastIndexOf("\\")+1);
         document.getElementById('d_picname').value = prev_picname+picname;
         //alert(prev_picname+picname);          
     }
</script>		
<style type="text/css">
.deliverform
{
width:430px;
font-size:13px;  
color:#000;  
font-family:Microsoft YaHei;
margin-left:auto;  
margin-right:auto;
}
.txtstyle
{
width:110px;  
height:30px;
float:left;  
text-align:left;
}
.framestyle
{
width:300px;  
height:30px;
text-align:left;
float:left;
}
input
{
width:200px;
border:1px solid #999;
}
.upfile
{
width:270px;
border:1px solid #999;
background-color:transparent;
}
.txtarea
{
width:300px;  
text-align:left;
border:0px;
overflow-x: hidden; /*隐藏多行文本框的水平滚动条*/
float:left;
}
</style>
</head>
<body style="background:url(../images/backlogo1.png) no-repeat right bottom;">
<div class="Main_Frame">
     <div class="Head">
         <!--#include file="head.html"-->
     </div>
     <div class="Middle">
     <form name="form1" action="planupload.asp" enctype="multipart/form-data"  method="post" target="hidFrame" onsubmit="return doCheck();">
         <div class="deliverform">
                <div class="txtstyle">项目名称:<