// JavaScript Document
(function($) {
				$.fn.scrollTop = function(options) {
					var defaults = {
						speed: 30
					}
					var opts = $.extend(defaults, options);
					this.each(function() {
						var $timer;
						var scroll_top = 0;
						var obj = $(this);
						var $height = obj.find("ul").height();
						obj.find("ul").clone().appendTo(obj);
						obj.hover(function() {
							clearInterval($timer);
						}, function() {
							$timer = setInterval(function() {
								scroll_top++;
								if (scroll_top > $height) {
									scroll_top = 0;
								}
								obj.find("ul").first().css("margin-top", -scroll_top);
							}, opts.speed);
						}).trigger("mouseleave");
					})
				}
			})(jQuery)