function click (e) {

        if ( document.all ) {

            if ( event.button == 2) {

                return false;

            }

        }


        if ( document.layers ) {

            if ( e.which == 3 ) {

                return false;

            }

        }

    }


    if ( document.layers ) {

        document.captureEvents ( Event.MOUSEDOWN );

    }

    document.onmousedown = click;