function onLoad()
{
	document.getElementById("lunhuan_content1").style.display="block";
	document.getElementById("content1").style.display="block";
	for(i=2;i<5;i++)
	{
		document.getElementById("lunhuan_content"+i).style.display="none";
		document.getElementById("content"+i).style.display="none";
	}
}
function onShow(sid)
{
	for(j=1;j<5;j++)
	{
		document.getElementById("lunhuan_content"+j).style.display="none";
	}
	document.getElementById("lunhuan_content"+sid).style.display="block";
}
function showDiv(nid)
{
	for(n=1;n<5;n++)
	{
		document.getElementById("content"+n).style.display="none";
	}
	document.getElementById("content"+nid).style.display="block";
}