/*
* Tadas Juozapaitis ( kasp3rito@gmail.com )
*/

(function($) {
    $.fn.vTicker = function(options) {
        var defaults = {
            speed: 700,
            pause: 4000,
            rowHeight: 0,
            showItems: 2
        };

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

        moveUp = function(obj, height) {
            first = obj.children('ul').children('li:first').clone(true);
            if (obj.children('ul').children('li').length == 1)
                return;
            obj.children('ul')
    	    .animate({ top: '-=' + height + 'px' }, options.speed, function() {
    	    $(this).children('li:first').remove();
    	    $(this).css('top', '0px');
    	});

            first.appendTo(obj.children('ul'));
        };

        return this.each(function() {
            obj = $(this);
            maxHeight = options.rowHeight;

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

            interval = setInterval('moveUp(obj, maxHeight)', options.pause);
        });
    };
})(jQuery);