function con( $db, $realm=false ) {

    if(!$realm)
    {
        $user = $this->connections[$db]['user'];
        $pass = $this->connections[$db]['pass'];
        $host = $this->connections[$db]['host'];
        $data = $this->connections[$db]['db_name'];
    }
    else{

        $user = $db['user'];
        $pass = $db['pass'];
        $host = $db['host'];
        $data = $db['db_name'];
        //echo $user."::".$pass."::".$host."::".$data;

    }


    $con = mysql_connect( $host, $user, $pass ) or die('Error: cannot connect to database!');
    $con = mysql_select_db( $data, $con );

    return $con;

    }