jQuery(function($) {
		function ScrollAction(listObj, listElem, speed, isSeries) {	//listObj为需要滚动的列表，  speed为滚动速度
			var pos, top, aniTop, height;
			var id = '';  //记录setInterval的标记id
			
			pos = listObj.position();	
			top = pos.top;			//列表的top
			aniTop = top;				//记录当前运动时的top
			height = listObj.height();	//列表的高度
			
			var scrollUp = function() {
				aniTop--;
				if(!isSeries) {	//isSeries变量控制是否连续滚动，false不连续，true连续
					if(aniTop == -height) {	//不连续，滚动玩重新滚动
						listObj.css({'top': top});
						aniTop = top;
					};
				} else {
					if(aniTop == -listObj.children().eq(0).height()) {	//连续滚动
						var firstItem = '<' + listElem +'>' + listObj.children().eq(0).html() + '</' + listElem +'>';
						listObj.children().eq(0).remove();
						listObj.append(firstItem);
						aniTop = 4;
					};
				};
				listObj.css({'top': aniTop + 'px'});
			};
			
			var hover = function(id) {
				listObj.hover(function() {
					clearInterval(id);
				}, function() {
					id = setInterval(scrollUp, speed);
				});
			};
			
			this.start = function() {
				id = setInterval(scrollUp, speed);
				hover(id);
			};
			
		};
		var sa = new ScrollAction($('.noticeList'), 'li', 40, true);
		sa.start();
	});