(function ($) {
    $.fn.itunesFeature = function (c) {
        var c = $.extend(true, $.fn.itunesFeature.defaults, c);
        return this.each(function () {
            var a = $(this);
            var b = {
                container: a,
                transitionInProgress: false,
                manualTransition: false,
                pausePresentation: false
            };
            ie6();
            readBillboardImages(c, b);
            if (b.images.length < 4) {
                alert('The "iTunesFeature" widget requires at least four sets of images!');
                return
            }
            initializeBillboards(c, b);
            initializeCarrousel(c, b);
            runBillboards(c, b)
        })
    };
    $.fn.itunesFeature.defaults = {
        transitionsInterval: 5000,
        transitionsLength: 600
    };

    function ie6() {
        return ($.browser.msie && $.browser.version == "6.0")
    };

    function readBillboardImages(e, f) {
        var g = f.container.find("div");
        f.images = [];
        g.each(function (a, b) {
            var c = jQuery(b).find("img");
            var d = jQuery(b).find("a");
            if (c.length >= 2) {
                f.images.push({
                    title: $(b).find("span").text(),
                    thumb: $(c[0]).attr("src"),
                    large: $(c[1]).attr("src"),
                    link: $(d[0]).attr("href")
                })
            }
        });
        f.images.current = 0;
        f.images.next = 1;
        g.remove()
    };

    function initializeCarrousel(a, b) {
        b.carrousel = $(document.createElement("ul")).attr("id", "carrousel");
        b.container.append(b.carrousel);
        for (var i = b.images.length - 1; i >= 0; i--) {
            var c = b.images[i];
            var d = '<li style="background:url(' + c.thumb + ') no-repeat"></li>';
            b.carrousel.append(d)
        }
        b.downArrow = $(document.createElement("img")).attr({
            "src": "images/nothing.gif",
            "class": ((ie6()) ? "downarrow downarrowIE6" : "downarrow")
        }).css({
            "opacity": "0"
        });
        b.container.append(b.downArrow);
        b.container.bind("mouseenter mouseleave", function (e) {
            b.downArrow.css("opacity", (e.type == "mouseenter") ? "8" : "0")
        });
        b.downArrow.bind("mouseenter mouseleave click", function (e) {
            switch (e.type) {
            case "mouseenter":
                b.pausePresentation = true;
                break;
            case "mouseleave":
                b.pausePresentation = false;
                break;
            case "click":
                if (b.transitionInProgress) return;
                b.manualTransition = true;
                onBillboardTransition(a, b);
                b.manualTransition = false;
                break
            }
        })
    };

    function initializeBillboards(b, c) {
        c.container.append('<div id="billboardone"></div><div id="billboardtwo"></div>');
        var d = c.container.find("div");
        c.billboard1 = $(d[0]);
        c.billboard2 = $(d[1]).fadeTo(0, 0);
        c.activeBillboard = c.billboard1;
        c.titleBar = $(document.createElement("span")).attr({
            "class": (ie6() ? "featuretitle featuretitleIE6" : "featuretitle")
        }).html("Some big title here");
        c.container.append(c.titleBar);
        c.transparentGlass = jQuery(document.createElement("div")).attr("id", "transparentGlass");
        c.container.append(c.transparentGlass);
        c.transparentGlass.click(function (e) {
            var a = c.images[c.images.current].link;
            if (a) document.location.href = c.images[c.images.current].link
        })
    };

    function runBillboards(a, b) {
        with(b) {
            billboard1.css({
                "background": "url(" + images[images.current].large + ") no-repeat"
            });
            billboard2.css({
                "background": "url(" + images[images.next].large + ") no-repeat"
            });
            titleBar.html(images[images.current].title)
        }
        b.container.css("display", "block");
        b.billboardIntervalHandle = setInterval(function () {
            onBillboardTransition(a, b)
        }, a.transitionsInterval)
    };

    function reorderImagePointers(a) {
        a.current = (a.current == a.length - 1) ? 0 : a.current + 1;
        a.next = (a.next == a.length - 1) ? 0 : a.next + 1
    };

    function onBillboardTransition(a, b) {
        with(b) if (transitionInProgress || (pausePresentation && manualTransition == false)) return;
        var c = (b.activeBillboard == b.billboard1) ? b.billboard2 : b.billboard1;
        var d = b.activeBillboard;
        c.css({
            "background": "url(" + b.images[b.images.next].large + ") no-repeat"
        });
        updateCarrousel(a, b);
        b.carrousel.animate({
            top: "0px"
        }, a.transitionsLength);
        var w = b.titleBar.width();
        var l = b.titleBar.position().left;
        b.titleBar.animate({
            left: -(l + w) + "px"
        }, a.transitionsLength / 2, function () {
            b.titleBar.html(b.images[b.images.next].title).css("left", -(b.titleBar.width() + 50) + "px");
            b.titleBar.animate({
                left: l + "px"
            }, a.transitionsLength / 2)
        });
        b.transitionInProgress = true;
        c.fadeTo(a.transitionsLength, 1);
        d.fadeTo(a.transitionsLength, 0, function () {
            b.activeBillboard = c;
            reorderImagePointers(b.images);
            d.css({
                "background": "url(" + b.images[b.images.current].large + ") no-repeat"
            });
            b.transitionInProgress = false
        })
    };

    function updateCarrousel(a, b) {
        var c = b.carrousel.find("li:first");
        var d = b.carrousel.find("li:last");
        b.carrousel.css("top", -c.height() + "px");
        c.before(d)
    }
})(jQuery);