/* =========================================================
// jquery.innerfadexml.js

// Datum: 2008-10-24
// Author: 8ya.net
// Web: http://www.8ya.net/
 
// based on the work of Torsten Baldes http://medienfreunde.com 
// and Matt Oakes http://portfolio.gizone.co.uk/applications/slideshow/
// and Ralf S. Engelschall http://trainofthoughts.org/

// ========================================================= */

(function($) {

    $.fn.innerfadexml = function(options) {
        return this.each(function() {
            $.innerfadexml(this, options);
        });
    };

    $.innerfadexml = function(container, options) {
        var settings = {
            'animationtype': 'fade',
            'speed': 'normal',
            'type': 'sequence',
            'timeout': 2000,
            'containerheight': 'auto',
            'runningclass': 'innerfadexml',
            'children': null,
            'xmllocation': null
        };
        if (options) $.extend(settings, options);
        var elements = new Array();
        if (settings.xmllocation === null) {
            alert('innerfadexml-xmllocation must be defined.');
        } else {
            $.ajax({
                url: settings.xmllocation,
                async: true,
                cache: true,
                dataType: "xml",
                success: function(xml) {
                    $(xml).find('item').each(function() {
                        var title = $(this).find('title').text();
                        var url = $(this).find('link').text();
                        var element = $('<div><a href="' + url + '">' + title + '</a></div>');
                        $(container).append(element);
                        elements.push(element);
                    });
                    if (elements.length > 1) {
                        $(container).hide();
                        $(container).css('position', 'relative').css('height', settings.containerheight).addClass(settings.runningclass);
                        for (var i = 0; i < elements.length; i++) {
                            $(elements[i]).css('z-index', String(elements.length - i)).css('position', 'absolute').hide();
                        };
                        if (settings.type == "sequence") {
                            setTimeout(function() {
                                $.innerfadexml.next(elements, settings, 1, 0);
                            },
                            settings.timeout);
                            $(elements[0]).show();
                        } else if (settings.type == "random") {
                            var last = Math.floor(Math.random() * (elements.length));
                            setTimeout(function() {
                                do {
                                    current = Math.floor(Math.random() * (elements.length));
                                } while ( last == current );
                                $.innerfadexml.next(elements, settings, current, last);
                            },
                            settings.timeout);
                            $(elements[last]).show();
                        } else if (settings.type == 'random_start') {
                            settings.type = 'sequence';
                            var current = Math.floor(Math.random() * (elements.length));
                            setTimeout(function() {
                                $.innerfadexml.next(elements, settings, (current + 1) % elements.length, current);
                            },
                            settings.timeout);
                            $(elements[current]).show();
                        } else {
                            alert('innerfadexml-Type must either be \'sequence\', \'random\' or \'random_start\'');
                        }
                        $(container).show();
                    } else {
                        alert('no feed!')
                    }
                }
            });
        }
    };

    $.innerfadexml.next = function(elements, settings, current, last) {
        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('innerfadexml-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;
            }
        } else if (settings.type == "random") {
            last = current;
            while (current == last)
            current = Math.floor(Math.random() * elements.length);
        } else alert('innerfadexml-Type must either be \'sequence\', \'random\' or \'random_start\'');
        setTimeout((function() {
            $.innerfadexml.next(elements, settings, current, last);
        }), settings.timeout);
    };

})(jQuery);

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