function sqimap_mb_convert_encoding($str, $to_encoding, $from_encoding, $default_charset)
{
// Allows mbstring functions only with iso-8859-*, utf-8 and
// iso-2022-jp (Japanese)
// koi8-r and gb2312 can be added only in php 4.3+
function sqimap_mb_convert_encoding($str, $to_encoding, $from_encoding, $default_charset)
{
// Allows mbstring functions only with iso-8859-*, utf-8 and
// iso-2022-jp (Japanese)
// koi8-r and gb2312 can be added only in php 4.3+