/************************************************************/

var interval_id;

$(function() {
    var carousel = $('#FP_carousel');
    var news = carousel.find('ul.news');
    var controls = null; // Will hold the ul with the controls
    var timer = null; // Will hold the timer div
    var wait = 8000; // Milliseconds to wait for auto-switching
    var widths = [];   // Will hold the widths of each image
    var items_size = news.find('li').length;
    var initialized = false;

    if (!items_size) { return; }

    // Controls html to append
    var controls_str = '<ul class="controls">';

   

    for (var i = 1; i <= items_size; i++) {
        controls_str += '<li><a href="#" title="Click to pause">' + i + '</a></li>';

    }
    controls_str += '</ul>';

    // Cache the controls list
    controls = carousel.append(controls_str).find('ul.controls');

    // Make the first button in controls active
    controls.find('li:first a').addClass('active');

    // Hook to the controls' click events
    controls.find('li a').click(function(event) {
        move_news($(this));
        return false;
    });

    // Append the timer and cache it
    timer = carousel.append('<div class="timer"></div>').find('div.timer');

    // Store each item's width and calculate the total width
    news.find('li div.carousel_cell')
        .each(function(i, e) {
            widths[i] = $(e).width();
            if (all_images_loaded()) { init_carousel(); }
        })
        .load(function(e) {
            var i = news.find('li div').index(this);
            widths[i] = $(this).width();
            if (all_images_loaded()) { init_carousel(); }
        });

    /***********************************************************************/
    function all_images_loaded() {
        return (items_size == widths.length) && (jQuery.inArray(0, widths) < 0);
    }

    /**********************************************************************/
    function move_news(new_active) {

        // Move unless it is already moving
        if ($('#FP_carousel ul.news:animated').length > 1) {
            return false;
        }

        var current_active = controls.find('li a.active');

        //////////////////////////////////////
            if (new_active != 'next') {   clearInterval(interval_id); };


        if (new_active == 'next') {
            var next = current_active.parent().next().find('a');

            if (!next.length) { next = controls.find('li:first a'); }

            new_active = next;
        }

        var current_index = parseInt(current_active.text(), 10) - 1;
        var new_index = parseInt(new_active.text(), 10) - 1;
        var move_to = new_index - current_index;

        if (!move_to) { return false; }

        var direction = (move_to > 0) ? '-=' : '+=';

        var move = 0;
        var bottom = Math.min(current_index, new_index);
        var top = Math.max(current_index, new_index);

        while (bottom < top) {
            move += widths[bottom];
            bottom++;
        }

        news.animate({ marginLeft: direction + move }, 1);

        new_active.addClass('active');
        current_active.removeClass('active');




    }

    /**********************************************************************/
    function animate_timer() {


        timer.stop().css({ width: '100px' }).animate({ width: '1px' }, wait);


    }

    /**********************************************************************/
    // Initializer, called when all images are loaded
    function init_carousel() {
        if (initialized) { return false; }

        // Set the news ul total width
        var width = 0;
        for (var i = 0; i < widths.length; i++) { width += widths[i]; }
        news.width(width);

        // Make the news change every X seconds
        interval_id = setInterval(function() { move_news('next'); animate_timer(); }, wait);
        animate_timer();

        initialized = true;
    }
});