Diashow - Ist ein Stop nach dem letzten Bild möglich?

this.slideSwitch = function (elemid, direction) {
    var $activeImageURL = $z(elemid + ' div.slide.active a').attr('href');
    var $lastImageURL = $z(elemid + ' div.slide:last a').attr('href');
    if ($activeImageURL === $lastImageURL) {
        clearInterval(sshow.slideshow);
        return;
    }
    
    direction = typeof direction !== 'undefined' ? direction : 'next';
    var $active = $z(elemid + ' div.slide.active');
    if ( $active.length === 0 ) {
        $active = $z(elemid + ' div.slide:first');
    }
    var $next;
    if ( direction === "next" ) {
        $next = $active.next(".slide").length ? $active.next(".slide") : $z(elemid + ' div.slide:first');
    }
    else if ( direction === "prev" ){
        $next = $active.prev(".slide").length ? $active.prev(".slide") : $z(elemid + ' div.slide:last');
    }

    $active.addClass('last-active')
        .css({"z-index": 101});

    $next.css({"opacity": "0.0"})
        .addClass('active')
        .css({"z-index": 102}) 
        .animate({"opacity": "1.0"}, 500, function() {
            $active.removeClass('active last-active')
                .css({"z-index": "100", "opacity": "0"});
    });
};