/*
 * vertical news ticker
 * Tadas Juozapaitis ( kasp3rito@gmail.com )
 * http://www.jugbit.com/jquery-vticker-vertical-news-ticker/
 */
(function($){
    $.fn.vTicker = function(options) {
        var defaults = {
            speed: 700,
            pause: 4000,
            showItems: 3,
            animation: '',
            mousePause: true,
            isPaused: false,
            direction: 'up',
            height: 0
        };

        var options = $.extend(defaults, options);

        moveUp = function(obj2, height, options){
            if(options.isPaused)
                return;

            var obj = obj2.children('ul');

            var clone = obj.children('li:first').clone(true);

            if(options.height > 0)
            {
                height = obj.children('li:first').height();
            }

            /* Abdelaziz Bennouna (tellibus) 2011/03/07
* Computing new total height in case auto height is off
*/
            if(options.height == -1) {
                newHeight = obj2.height() + obj.children('li').eq(options.showItems).height() - height + 'px';
                obj2.animate({
                    height: newHeight
                });
            //obj2.css('height', newHeight); // or without animation
            }
            /* End of Abdelaziz Bennouna (tellibus) 20110307 */

            obj.animate({
                top: '-=' + height + 'px'
                }, options.speed, function() {
                $(this).children('li:first').remove();
                $(this).css('top', '0px');
            });

            if(options.animation == 'fade')
            {
                obj.children('li:first').fadeOut(options.speed);
                if(options.height == 0)
                {
                    /*
Comment from José
2011/03/02 at 00:27
Fix to JQuery 1.4.4 ->
Search line:
f.children(“li:eq(“+e.showItems+'')'').hide().fadeIn(e.speed)
''	obj.children('li:eq(' + options.showItems + ')').hide().fadeIn(options.speed).show();''
Replace to:
f.children(“li:eq(“+e.showItems+'')'').fadeIn(e.speed)
''	obj.children('li:eq(' + options.showItems + ')').fadeIn(options.speed);''
*/
                    obj.children('li:eq(' + options.showItems + ')').fadeIn(options.speed);
                }
            }

            clone.appendTo(obj);
        };

        moveDown = function(obj2, height, options){
            if(options.isPaused)
                return;

            var obj = obj2.children('ul');

            var clone = obj.children('li:last').clone(true);

            if(options.height > 0)
            {
                height = obj.children('li:first').height();
            }

            obj.css('top', '-' + height + 'px')
            .prepend(clone);

            obj.animate({
                top: 0
            }, options.speed, function() {
                $(this).children('li:last').remove();
            });

            if(options.animation == 'fade')
            {
                if(options.height == 0)
                {
                    obj.children('li:eq(' + options.showItems + ')').fadeOut(options.speed);
                }
                obj.children('li:first').hide().fadeIn(options.speed).show();
            }
        };

        return this.each(function() {
            var obj = $(this);
            var maxHeight = 0;

            obj.css({
                overflow: 'hidden', 
                position: 'relative'
            })
            .children('ul').css({
                position: 'absolute', 
                margin: 0, 
                padding: 0
            })
            .children('li').css({
                margin: 0, 
                padding: 0
            });

            if(options.height == 0)
            {
                obj.children('ul').children('li').each(function(){
                    if($(this).height() > maxHeight)
                    {
                        maxHeight = $(this).height();
                    }
                });

                obj.children('ul').children('li').each(function(){
                    $(this).height(maxHeight);
                });

                obj.height(maxHeight * options.showItems);
            }
            /* Abdelaziz Bennouna (tellibus) 2011/03/07
* Total height for all items in case auto height is off
*/
            else if(options.height == -1)
            {
                var totalHeight = 0;
                for(i = 0; i < options.showItems; i++)
                    totalHeight += obj.children('ul').children('li').eq(i).height();
                obj.height(totalHeight);
            }
            /* End of Abdelaziz Bennouna (tellibus) 20110307 */
            else
            {
                obj.height(options.height);
            }

            var interval = setInterval(function(){
                /* Mike Leber 2010/11/10 at 14:51
* The height of each element is calculated dynamically
*/
                var currentHeight = maxHeight;
                var ulObj = obj.children('ul');
                if (options.direction == 'up') {
                    if (options.height == -1) {
                        currentHeight = ulObj.children('li:first').height();
                    }
                    moveUp(obj, currentHeight, options);
                } else {
                    if (options.height == -1) {
                        currentHeight = ulObj.children('li:last').height();
                    }
                    moveDown(obj, currentHeight, options);
                }
            /* End of Mike Leber 20101110 */
            }, options.pause);

            if(options.mousePause)
            {
                obj.bind("mouseenter",function(){
                    options.isPaused = true;
                }).bind("mouseleave",function(){
                    options.isPaused = false;
                });
            }
        });
    };
})(jQuery);