var t = n = count = 0;   

$(function(){   
    count = $("#play_list a").size();   
    $("#play_list a:not(:first-child)").hide();   
    $("#play_text li:first-child").css({"background":"#fff",'color':'#000','width':'14px','height':'14px'});   
    $("#play_text li").click(function() {   
        var i = $(this).text() - 1;   
        n = i;   
        if (i >= count) return;   
        $("#play_list a").filter(":visible").fadeOut(1000).parent().children().eq(i).fadeIn(1000);   
        $(this).css({"background":"#fff",'color':'#000'}).siblings().css({"background":"#000",'color':'#fff'});   
    });   
    t = setInterval("showAuto()", 5000);   
    $("#play").hover(function(){clearInterval(t)}, function(){t = setInterval("showAuto()", 5000);});   
})   
  
function showAuto()   
{   
    n = n >= (count - 1) ? 0 : n + 1;   
    $("#play_text li").eq(n).trigger('click');   
}