(function($) {
    var nextSetIdentifier = 0;
    var classModifier = "";

    var feedItems;
    var feedIndex;
    var feedDelay = 10;
    var feedTimer;

    function CycleFeedList(feedList, i) {
        feedItems = feedList;
        feedIndex = i;
        ShowNextFeedItem();
    }

    function ShowNextFeedItem() {
        //put that feed content on the screen!
        $("." + classModifier + " .content").fadeOut(1000, function() {
            $("." + classModifier + " .content").html(feedItems[feedIndex]).fadeIn(1000);
            PadDocument();
            feedIndex++;
            if (feedIndex >= feedItems.length) {
                feedIndex = 0;
            }
            feedTimer = window.setTimeout(ShowNextFeedItem, (feedDelay * 1000));
        });
    }

    // Gets rid of CDATA sections
    function StripCdataEnclosure(string) {
        if (string.indexOf("<![CDATA[") > -1) {
            string = string.replace("<![CDATA[", "").replace("]]>", "");
        }
        return string;
    }

    // Add padding to the bottom of the document so it can be scrolled past the footer
    function PadDocument() {
        var paddingRequired = $("." + classModifier).height();
        $("#" + classModifier + "padding").css({ paddingTop: paddingRequired + "px" });
    }

    $.fn.constantfooter = function(settings) {

        var config = {
            classmodifier: "constantfooter",
            feed: "",
            feedlink: "Read more &raquo;",
            opacity: 1.0,
            showclose: false,
            closebutton: "[x]"
        };

        if (settings) {
            $.extend(config, settings);
        }

        return this.each(function() {

            classModifier = config.classmodifier;

            // Make sure opacity is a number between 0.1 and 1
            var opacity = parseFloat(config.opacity);
            if (opacity > 1) {
                opacity = 1;
            } else if (opacity < 0.1) {
                opacity = 0.1;
            }

            // Add a div used for body padding
            //$(this).before("<div id=\"" + config.classmodifier + "padding\">&nbsp;</div>");

            // Hide it
            $(this).hide().addClass(classModifier).css({ position: "fixed", bottom: "0px", left: "0px", width: "100%" })

            // If there is a feed, we will replace the footer HTML with the feed
            if (config.feed.length > 0) {
                $(this).html("");
            }

            // Show a close button if required
            if (config.showclose) {
                $(this).prepend("<div style=\"float: right;\" class=\"" + classModifier + "close\">" + config.closebutton + "</div>");
                $("." + classModifier + "close").css({ cursor: "pointer" });
                $("." + classModifier + "close").click(function() {
                    $(this).parent().fadeOut();
                    window.clearTimeout(feedTimer);
                });
            }

            $(this).append("<div class=\"content\"></div>");

            // Show it
            $(this).fadeTo(1000, opacity);

            // Pad the bottom of the document
            PadDocument();

            // Process any feeds
            if (config.feed.length > 0) {

                var feedList = new Array();

                $.get(config.feed, function(xmlDoc) {

                    var itemList = xmlDoc.getElementsByTagName("item");

                    for (var i = 1; i <= itemList.length; i++) {

                        var title = xmlDoc.getElementsByTagName("title")[i].childNodes[0].nodeValue;
                        var link = xmlDoc.getElementsByTagName("link")[i].childNodes[0].nodeValue;
                        var description = xmlDoc.getElementsByTagName("description")[i].childNodes[0].nodeValue;

                        var article = "<div class=\"item\">";

                        if (link != null) {
                            article += "<a href=\"" + link + "\">";
                        }
                        article += "<h2>" + title + "</h2>";
                        if (link != null) {
                            article += "</a>";
                        }

                        article += "<div class=\"description\"><p>" + description + "</p></div>";

                        if (link != null) {
                            article += "<div class=\"link\"><a href=\"" + link + "\">" + config.feedlink + "</a></div>";
                        }

                        article += "</div>";

                        feedList[feedList.length] = article;
                    }

                    if (feedList.length > 0) {
                        CycleFeedList(feedList, 0);
                    }
                });
            }
        });
    };
})(jQuery);