支持汉语的base64编码文件

支持中文的base64编码文件
<!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>用javascript实现Base64编码 - aspxhome.com</title>
</head>

<body>
<script src="Base64-80.js"></script>
<script language = "JavaScript"> 
var de=encode64("中国");
var en=decode64(de); 
document.writeln(de+"<br />"); 
document.writeln(en+"<br />");
</script>
</body>
</html>