//var previous = 0;
//var inntimer = '';
var previous = new Array();
var inntimer = new Array();
(function($) {

    $.fn.innerfade = function(options, strNextEl, strPagineringEl, nrEl) {
        return this.each(function() {
            $.innerfade(this, options, strNextEl, strPagineringEl, nrEl);
        });
    };

    $.innerfade = function(container, options, strNextEl, strPagineringEl, nrEl) {
        var settings = {
            'animationtype': 'fade',
            'speed': 'normal',
            'type': 'sequence',
            'timeout': 2000,
            'containerheight': 'auto',
            'runningclass': 'innerfade',
            'children': null
        };
        previous[nrEl] = 0;
        inntimer[nrEl] = 0;

        if (options)
            $.extend(settings, options);
        if (settings.children === null)
            var elements = $(container).children();
        else
            var elements = $(container).children(settings.children);


        if (elements.length > 1) {

            $(container).css('position', 'relative').css('height', settings.containerheight).addClass(settings.runningclass);
            $("#" + strPagineringEl).html('');
            for (var i = 0; i < elements.length; i++) {
                $(elements[i]).css('z-index', String(elements.length - i)).css('position', 'absolute').hide();

                $("#" + strPagineringEl).append("<a class='paginering_knop' href='javascript:void(null);' id='" + nrEl + i + "'></a>");
                $('#' + nrEl + i).bind('click', function() {
                    $.innerfade.ganaar(elements, settings, this, strNextEl, strPagineringEl, nrEl);
                    return false;
                });
            };
            //custom begin
            if (strNextEl) {
                //$("#" + strNextEl).append("<div title='Vorige slide' class='carousel_prev'></div><div class='carousel_next' title='Volgende slide'></div>");
                //        $("#" + strNextEl + " .carousel_prev").bind('click', function() {
                //          $.innerfade.ganaar(elements, settings, $("#" + strNextEl + " .carousel_prev"), strNextEl, strPagineringEl, nrEl);
                //          return false;
                //        });
            }
            //custom einde
            $('#' + nrEl + '0').addClass("first");
            $('#' + nrEl + '0').addClass("active");
            $('ul[id^=' + strPagineringEl + '] li:last').addClass("last");

            if (settings.type == "sequence") {
                inntimer[nrEl] = setTimeout(function() {
                    $.innerfade.next(elements, settings, 1, 0, true, strNextEl, strPagineringEl, nrEl);
                }, settings.timeout);
                $(elements[0]).show();
            } else if (settings.type == "random") {
                var last = Math.floor(Math.random() * (elements.length));
                inntimer[nrEl] = setTimeout(function() {
                    do {
                        current = Math.floor(Math.random() * (elements.length));
                    } while (last == current);
                    $.innerfade.next(elements, settings, current, last, true, strNextEl, strPagineringEl, nrEl);
                }, settings.timeout);
                $(elements[last]).show();
            } else if (settings.type == 'random_start') {
                settings.type = 'sequence';
                var current = Math.floor(Math.random() * (elements.length));
                inntimer[nrEl] = setTimeout(function() {
                    $.innerfade.next(elements, settings, (current + 1) % elements.length, current, true, strNextEl, strPagineringEl, nrEl);
                }, settings.timeout);
                $(elements[current]).show();
            } else {
                alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
            }
        }
    };

    $.innerfade.ganaar = function(elements, settings, el, strNextEl, strPagineringEl, nrEl) {
        i = parseInt(el.id.replace(nrEl, ""));
        current = i;

        last = previous[nrEl];
        if (current != last) {
            clearTimeout(inntimer[nrEl]);
            $.innerfade.next(elements, settings, current, last, true, strNextEl, strPagineringEl, nrEl);
        }
    }

    $.innerfade.next = function(elements, settings, current, last, faster, strNextEl, strPagineringEl, nrEl) {

        $('#' + strPagineringEl + " a").removeClass("active");
        $('#' + nrEl + current).addClass("active");

        if (settings.animationtype == 'slide') {
            $(elements[last]).slideUp(settings.speed);
            $(elements[current]).slideDown(settings.speed);
        } else if (settings.animationtype == 'fade') {
            $(elements[last]).fadeOut(settings.speed);
            $(elements[current]).fadeIn(settings.speed, function() {
                removeFilter($(this)[0]);
            });
        } else
            alert('Innerfade-animationtype must either be \'slide\' or \'fade\'');
        if (settings.type == "sequence") {
            if ((current + 1) < elements.length) {
                current = current + 1;
                last = current - 1;
            } else {
                current = 0;
                last = elements.length - 1;
            }
            //custom
            if (strNextEl) {
                $('#' + strNextEl).unbind('click');
                $('#' + strNextEl).bind('click', function() {
                    $.innerfade.ganaar(elements, settings, document.getElementById(nrEl + current), strNextEl, strPagineringEl, nrEl);
                    return false;
                });
            }
            //einde custom
        } else if (settings.type == "random") {
            last = current;
            while (current == last)
                current = Math.floor(Math.random() * elements.length);
        } else
            alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
        previous[nrEl] = last;
        inntimer[nrEl] = setTimeout((function() {
            $.innerfade.next(elements, settings, current, last, false, strNextEl, strPagineringEl, nrEl);
        }), settings.timeout);
    };

})(jQuery);

// **** remove Opacity-Filter in ie ****
function removeFilter(element) {
    try {
        if (element.style.removeAttribute) {
            element.style.removeAttribute('filter');
        }
    } catch (e) { }
}