function supported($cmd)
{
static $cmdlist = array('MessageCommand', 'SubCommand', 'UnsubCommand',
- 'FavCommand', 'OnCommand', 'OffCommand');
+ 'FavCommand', 'OnCommand', 'OffCommand', 'JoinCommand', 'LeaveCommand');
if (in_array(get_class($cmd), $cmdlist)) {
return true;