function switchSlide(next_class){
    var banners = jQuery(".single-news > div");
    var current_id = jQuery(".single-news > div:visible").attr('id');
    var current = current_id.substr(1,current_id.length-1);
    if (jQuery("#b"+current).hasClass("news-select")) current_class='news-select';
    else if (jQuery("#b"+current).hasClass("diary-news")) current_class='diary-news';
    else current_class='members-lobby';                                
    if (next_class=='') {
        if (current == (banners.length-1)) var next = '0';
        else next = (Number(current) + 1).toString();
    }
    else {
        var this_class = current_class;
        var counter = Number(current);
        while (this_class!=next_class) {
            if (counter < banners.length - 1) {
                counter += 1;
            } else {
                counter = 0;
            }
            if (jQuery("#b"+counter.toString()).hasClass("news-select")) this_class='news-select';
            else if (jQuery("#b"+counter.toString()).hasClass("diary-news")) this_class='diary-news';
            else this_class='members-lobby';
        }
        var next = counter.toString();
    }
    if (jQuery("#b"+next).hasClass("news-select")) next_class='news-select';
    else if (jQuery("#b"+next).hasClass("diary-news")) next_class='diary-news';
    else next_class='members-lobby';
    jQuery("#b"+current).fadeOut(1000,function(){
        jQuery("#b"+next).fadeIn(1000);
        jQuery(".selector a."+current_class).removeClass(current_class+'-active');
        jQuery(".selector a."+current_class).removeClass('active');
        jQuery(".selector a."+next_class).addClass(next_class+'-active');
        jQuery(".selector a."+next_class).addClass('active');
    });
    clearTimeout(timer);
    timer = setTimeout(function(){switchSlide('')},6000);                                
}