Hi there, I have 3 types of users using third party component. They are clients,candidates,partners. Using MetaMod Pro i am trying to control top menu choice. If clients logs in clients top menu; If candidate logs in respective candidate top menu. The same for partners. If no one logged in General top menu. Here is code i am using to switch my top menus:

//top menu selector
if ( MM_NOT_LOGGED_IN ) return 1;

// get the user details
$user =& JFactory::getUser();
$myuid=$user->get('id');

// find out what type of user we have
$user_type='';

// see if a candidate record exists for this user
$query="select * from ".$dbprefix."RAM_candidates where userid='$myuid'";
$sth=mysql_query($query);
$num_rows = mysql_num_rows($sth);
if ($num_rows>0){$user_type='candidate';}

// see if a client record exists for this user
$query="select * from ".$dbprefix."RAM_clients where userid='$myuid'";
$sth=mysql_query($query);
$num_rows = mysql_num_rows($sth);
if ($num_rows>0) {$user_type='client';}

// see if a partner record exists for this user
$query="select * from ".$dbprefix."RAM_partners where userid='$myuid'";
$sth=mysql_query($query);
$num_rows = mysql_num_rows($sth);
if ($num_rows>0) {$user_type='partner';}

switch ($user_type) {
    case "client":
        return 97;
        break;
    case "candidate":
        return 102;
        break;
    case "partner":
        return 107;
        break;
}
It does not work properly. I believe it is my problem some where in the code, but could not pinpoint it. I would greatly appreciate if  some one could get me (I hope) out of the woods. With great respect,
and thanks
Boris