var t = n = 0, count = $("#play_list li").size();
$(function(){	
	$("#play_list li:not(:first-child)").hide();
	t = setInterval("showAuto()", 6000);
//	$("#play").hover(function(){clearInterval(t)}, function(){t = setInterval("showAuto()", 4000);});
})

function showAuto()
{
	n = n >= (count - 1) ? 0 : ++n;
	i = n;
	if (i >= count) return;
	$("#play_list li").filter(":visible").fadeOut(1000).parent().children().eq(i).fadeIn(2000);
}