PHPで設定した中国語CookieをJSが読み込むと文字化けが発生する場合はどうすればよいですか?

function escape($str)  
{      
       preg_match_all("/[\x80-\xff].|[\x01-\x7f]+/",$str,$r);      
       $ar    =    $r[0];   
        foreach($ar   as   $k=>$v)       
        {            
           if(ord($v[0]) < 128)  
               $ar[$k] = rawurlencode($v);
            else    
               $ar[$k]    =    "%u".bin2hex(iconv("GB2312","UCS-2",$v));   
       }   
       return    join("",$ar);   
}

<?php
function    escape($str)    {   
   preg_match_all("/[\x80-\xff].|[\x01-\x7f]+/",$str,$r);   
   $ar    =    $r[0];   
   foreach($ar    as    $k=>$v)    {   
    if(ord($v[0])    <    128)   
     $ar[$k]    =    rawurlencode($v);   
    else   
     $ar[$k]    =    "%u".bin2hex(iconv("GB2312","UCS-2",$v));   
   }   
   return    join("",$ar);   
}
$name = escape("深圳人");
setcookie("name", $name);
?>
<scrīpt>
function get_cookie(name)
{
var result = null;
var myCookie = document.cookie + ";";
var searchName = name + "=";
var startOfCookie = myCookie.indexOf(searchName);
var endOfCookie;
if (startOfCookie != -1)
{
   startOfCookie += searchName.length;
   endOfCookie = myCookie.indexOf(";",startOfCookie);
   result = unescape(myCookie.substring(startOfCookie, endOfCookie));
}
return result;
}
</scrīpt>
<scrīpt>
document.write("js:" + unescape(getCookie("name")));
</scrīpt>