About using Flash JavaScript methods with Flash Player

Flash Player 6 version 40 and later supports Flash JavaScript methods and FSCommand in Netscape 6.2 and later. Earlier versions do not support Flash JavaScript methods and FSCommand in Netscape 6.2 or later.

For Netscape 6.2 and later, you do not need to set swLiveConnect to true. However, setting swLiveConnect to true has no adverse effects.