var time = 500;
    var h = 0;
    function addCount()
    {
        if(time>0)
        {
            time--;
            h = h+5;
        }
        else
        {
            return;
        }
        if(h>=440)  //高度
        {
            return;
        }
	/*
        document.getElementById("ads").style.display = "";
        document.getElementById("ads").style.height = h+"px";
	*/
        setTimeout("addCount()",30);
    }

    
    var T = 400;
    var N = 440; //高度
    function noneAds()
    {
        if(T>0)
        {
            T--;
            N = N-5;
        }
        else
        {
            return;
        }
        if(N<=0)
        {

       	document.getElementById("ads").style.display = "none";
            return;
        }

        document.getElementById("ads").style.height = N+"px";

        setTimeout("noneAds()",30);
    }