var t = n = 0, count; 
$(document).ready(function(){
						   count=$("#banner_list a").length; 

						   $("#banner li").click(function() {            var i = $(this).text() - 1;//获取Li元素内的值，即1，2，3，4            
      n = i; 
	  if (i >= count) return;  
	  $("#banner_info").html($("#banner_list a").eq(i).find("img").attr('alt'));
	  $("#banner_info").unbind().click(function(){window.open($("#banner_list a").eq(i).attr('href'), "_blank")})     
	  $("#banner_list a").filter(":visible").fadeOut(500).parent().children().eq(i).fadeIn(1000);  
	  
	  $(this).css({"background":"#be2424",'color':'#000'}).siblings().css({"background":"#6f4f67",'color':'#fff'}); 
	  }); 
						   t = setInterval("showAuto()", 4000); 
						   $("#banner").hover(function(){clearInterval(t)}, function(){t = setInterval("showAuto()", 3000);});   
						   })   
function showAuto()    {        n = n >=(count - 1) ? 0 : ++n;        $("#banner li").eq(n).trigger('click');    }