/**
 * jQuery jqGalScroll Plugin
 * Examples and documentation at: http://benjaminsterling.com/jquery-jqgalscroll-photo-gallery/
 *
 * @author: Benjamin Sterling
 * @version: 2.1
 * @copyright (c) 2007 Benjamin Sterling, KenzoMedia
 * @extendThanks Koesmanto Bong http://www.koesbong.com/
 *        Koes put a fire under my butt to improve this plugin
 *        and when I took too long he took what I had and added
 *        the horizontal scroll and in turn I ripped it from his
 *        hands and made it better :)
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 *
 * @requires jQuery v1.2.1 or later
 * @optional jQuery Easing v1.2
 *
 * @name jqGalScroll
 * @example $('ul').jqGalScroll();
 *
 * @Semantic requirements:
 *                 The structure fairly simple; the structure should consist
 *                 of a ul > li > img structure.
 *
 *     <ul>
 *        <li><img src="common/img/dsc_0003.thumbnail.JPG"/></li>
 *        <li><img src="common/img/dsc_0012.thumbnail.JPG"/></li>
 *    </ul>
 *
 * @param String ease
 *                    refer to http://gsgd.co.uk/sandbox/jquery.easing.php for values
 *
 * @example $('#gallery').jqGalScroll({speed:1000});

 * @param String speed
 *                     fast, slow, 1000, ext..
 *
 * @example $('#gallery').jqGalScroll({speed:1000});
 *
 * @param String height
 *                     the default height of your wrapper
 *
 * @example $('#gallery').jqGalScroll({height:490});
 *
 * @param String titleOpacity
 *                     the opacity of your title bar (if present)
 *
 * @example $('#gallery').jqGalScroll({titleOpacity:.70});
 *
 * @param String direction
 *                    vertical horizontal diagonal
 *
 * @example $('#gallery').jqGalScroll({direction:'vertical'});
 *
 */
(function($) {
    $.fn.jqGalScroll = function(options) {
        return this.each(function(i) {
            var el = this
            el.curImage = 0;
            el.jqthis = $(this).css({position:'relative'});
            el.jqchildren = el.jqthis.children();
            el.opts = $.extend({}, jqGalScroll, options);
            el.index = i;
            el.totalChildren = el.jqchildren.size();
            var width,height;

            switch (el.opts.direction) {
                case 'horizontal':
                    width = el.totalChildren * el.opts.width;
                    height = el.opts.height;
                    break;
                case 'vertical':
                    width = el.opts.width;
                    height = el.totalChildren * el.opts.height;
                    break;
                default:
                    width = el.totalChildren * el.opts.width;
                    height = el.totalChildren * el.opts.height;
                    break;
            }
            ;

            el.container = $('<div id="jqGS' + i + '" class="jqGSContainer">').css({position:'relative'});
            el.ImgContainer = $('<div class="jqGSImgContainer" style="height:' + el.opts.height + 'px;position:relative;overflow:hidden">')
                    .css({height:el.opts.height,width:el.opts.width,position:'relative',overflow:'hidden'});
            el.jqthis.css({height:height,width:width});

            el.jqthis.wrap(el.container);
            el.jqthis.wrap(el.ImgContainer);
            el.pagination = $('<div class="jqGSPagination">');
            el.jqthis.parent().parent().append(el.pagination);
            var jqul = $('<ul>').appendTo(el.pagination);
            var pos = {x:0,y:0};

            el.jqchildren
                    .each(function(j) {
                var selected = '';
                if (j == 0) selected = 'selected';

                var $a = $('<a href="#' + (j) + '" class="' + selected + '">' + (j + 1) + '</a>').click(function() {
                    var href = this.index;//href.replace(/^.*#/, '');
                    el.pagination.find('.selected').removeClass('selected');
                    $(this).addClass('selected');
                    var params = {};
                    if (el.opts.direction == 'diagonal') {
                        params = {right:(el.opts.width * href),bottom:(el.opts.height * href)}
                    }
                    else if (el.opts.direction == 'vertical') {
                        params = {bottom:(el.opts.height * href)}
                    }
                    else if (el.opts.direction == 'horizontal') {
                        params = {right:(el.opts.width * href)}
                    }
                    ;

                    el.jqthis.stop().animate(params, el.opts.speed, el.opts.ease);
                    index = href;
                    return false;
                });

                var n = $a.get(0);

                n.index = j;

                $('<li>').appendTo(jqul).append($a);

                if (el.opts.direction == 'diagonal') {
                    pos.x = j * el.opts.width;
                    pos.y = j * el.opts.height;
                }
                else if (el.opts.direction == 'horizontal') {
                    pos.x = j * el.opts.width;
                }
                else if (el.opts.direction == 'vertical') {
                    pos.y = j * el.opts.height;
                }
                ;

                var jqchild = $(this).css({height:el.opts.height,width:el.opts.width,position:'absolute',left:pos.x, top:pos.y});

                var jqimg = jqchild.find('img').hide()

                if (jqimg.parent().is('a')) {
                    var p = jqimg.parent();
                    jqimg.get(0).linkHref = p.attr('href');
                    p.remove();
                    jqimg.appendTo(jqchild);
                }
                ;

                jqimg.click(function() {
                    var next = n.index + 1;
                    if ((n.index + 1) == el.totalChildren) {
                        el.pagination.find('[href$=#0]').click();
                    }
                    else {
                        el.pagination.find('[href$=#' + next + ']').click();
                    }
                });


                var $loader = $('<div class="jqGSLoader">').appendTo(jqchild);
//                var $titleHolder = $('<div class="jqGSTitle">').appendTo(jqchild).css({opacity:el.opts.titleOpacity}).hide();
                var image = new Image();
                image.onload = function() {
                    image.onload = null;
                    $loader.fadeOut();
                    jqimg.css({marginLeft:-image.width * .5,marginTop:-image.height * .5,position:'absolute',left:'50%',top:'50%'}).fadeIn();
                    var alt = jqimg.attr('alt');
                    if (typeof alt != 'undefined') {
//                        $titleHolder.text(alt).fadeIn();
                    }
                };
                image.src = jqimg.attr('src');
            });

            var interVal = setInterval(function(){
                if(el.pagination.find('.selected').parent().next().children('a').size()){
                    el.pagination.find('.selected').parent().next().children('a').click();
                }
                else{
                    el.pagination.find('li:eq(0)').children('a').click();
                }
            }, 6000);


        }); // end : this.each(function()
    };  // end : $.fn.jqGalScroll
    jqGalScroll = {
        ease: null,
        speed: 0,
        height: 500,
        width: 500,
        titleOpacity : .60,
        direction : 'horizontal' // vertical horizontal diagonal
    };
})(jQuery);