(function ($) {
	$.fn.newsticker = function (opts) {
		// default configuration
		var config = $.extend({}, {
			height: 95,
			speed: 400,
			start: -17,
			interval: 4000,
			move: null
		}, opts);
		// main function
		function init(obj) {
			var $newsticker = obj,
				$frame = $newsticker.find('.headline_ul'),
				$item = $frame.find('.headline_li'),
				$next,
				stop = false;

			function init() {
				$item.eq(0).addClass('current'); //set start item
				suspend();
				move();
			};

			function suspend() {
				$newsticker.on('mouseover mouseout', function (e) {
					if (e.type == 'mouseover') {
						stop = true;
					} else { //mouseout
						stop = false;
					}
				});
			};

			function move() {
				if ($.isFunction(config.move)) {
					config.move.call(this);
				} else {
					setInterval(function () {
						if (!stop) {
							var $current = $frame.find('.current');

							$frame.animate({
								top: '-=' + config.height + 'px'
							}, config.speed, function () {
								$next = $frame.find('.current').next();
								$next.addClass('current');
								$current.removeClass('current');
								$current.clone().appendTo($frame);
								$current.remove();
								$frame.css('top', config.start + 'px');
							});
						}
					}, config.interval);
				}
			};

			init();
		}
		// initialize every element
		this.each(function () {
			init($(this));
		});
		return this;
	};
	// start
	$(function () {
		$('.byg_headline').newsticker();
	});
})(jQuery);