var XG=0;
	var St=10;   //一次移动步长
	var T2=10;    //打开/关闭执行速率
	var Pic=200;  //图片高度
	var T1=56000;  //显示停顿时间
	
	var L=document.getElementById("ShowPic");
	XG=-Pic;
	
	
function Show_news()
{

	L.style.display="block";
	
	
	XG=XG+St;
	L.style.marginTop=XG;
	if(Math.abs(XG)>St)
	{
 	setTimeout("Show_news()",T2);
	}else{
	setTimeout("Hidden_news()",T1);
	}
}

function Hidden_news()
{
	XG=XG-St;
	L.style.marginTop=XG;
	if(Math.abs(XG+Pic)>St)
	{
 	setTimeout("Hidden_news()",T2);
	}else{
	L.style.display="none";
	}
}