"Tell a friend" message doen't support UTF8

[leosophy]

Find out the bug of "tell a friend".

When the recommend_small.tpl pass the $message to recommend.php. Such UTF8 code will changed to the following format:
%u6211..... something.

The problems is , the Email content will be tread such UTF8code into real characters.

I have done the following converting(%u{number} change to html representation

$message = preg_replace("/%u(\w+)/e", "'&#'.hexdec('\\1').';'", $message);

Then %u6211 will changed to a chinese word "我"

But I can't display on the Email message... Please help