var h = 300;

function openAds()
{

	if(h>300)  //down¸ß¶È
	{
			return;
	}
		else
	{
			h = h+2
			document.getElementById("ad").style.height = h+"px";
	}

	setTimeout("openAds()",10);

}

function closeAds()
{

	if(h>2)
	{
			h = h-2
			document.getElementById("ad").style.height = h+"px";
	}
	else
	{
			document.getElementById("ad").style.display = "none";
			return;
	}

	setTimeout("closeAds()",10);

}