日语操作系统中,为什么message显示乱码
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
  <HEAD>
   <TITLE> New Document </TITLE>
   <META NAME="Generator" CONTENT="EditPlus">
   <META NAME="Author" CONTENT="">
   <META NAME="Keywords" CONTENT="">
   <META NAME="Description" CONTENT="">
	<meta charset="gb2312">
<style type="text/css">
form
{
	font-family:Arial;
	font-size:14px;
	width:300px;
}
fieldset
{
	border:1px solid #ccc;
	margin-bottom:10px;
}
fieldset.login input
{
	width:125px;
}
legend
{
	font-weight:bold;
	font-size:1.1em;
}
label
{
	display:block;
	width:80px;
	text-align:right;
	float:left;
	padding-right:10px;
	margin:5px 0;	
}
input
{
	margin:5px 0;
}
input.text
{
	padding:0 0 0 3px;
	width:172px;
}
input.submit
{
	margin:15px 0 0 70px;
}
</style>
<script language=javascript >
function checkRequired(elem)
{
	if(elem.type=="checkbox"||elem.type=="radio")
		return getInputsByName(elem.name).numChecked;
	else  
		return elem.value.length>0&&elem.value!=elem.defaultValue;
}
function getInputsByName(name)
{
	var results=[];
	results.numChecked=0;
	var input=document.getElementsByTagName("input");
	for(var i=0;i<input.length;i++)
	{
		if(input[i].name==name)
		{
			results.push(input[i]);
			if(input[i].checked)
			{
				results.numChecked++;
			}
		}
	}
	return results;
}	
	window.onload=function()
		{			
			document.getElementsByTagName("form")[0].onsubmit=function()
			{
				var elem=document.getElementById("age");
				if(!checkRequired(elem))
				{
					alert("空です");
					return false;
				}
				var elem=document.getElementById("name");
				if(!checkRequired(elem))
				{
					alert("空です");
					return false;
				}
			}
		}
</script>
</HEAD>
  <BODY  >
   <form  action="" method="get">
	<fieldset class="login">
		<legend>Login Information</legend>
			<label for ="username" class="hover">UserName</label>
			<input type="text" id="userName" class="required text"></br>
			<label for="password" class="hover">Password</label>
			<input type="password" id="password" class="required text">
	</fieldset>
	<fieldset >
		<legend>Personnal Information</legend>
		<label for="name">Name</label>
		<input type="text" id="name" class="required text"></br>
				<label for="email">Email</label>
		<input type="text" id="email" class="required email text"></br>
				<label for="date">Date</label>
		<input type="text" id="date" class="required  date text"></br>
				<label for="url">Website</label>
		<input type="text" id="url" class="url text" value=&quo