//切換msn frame
var msnShowed = 0;
function msn(imgId,iframeId)
{
	if (msnShowed == 0)
	{
		
		document.getElementById(iframeId).style.visibility='visible';
		document.getElementById(imgId).src='../msn/msnOff.jpg';
		msnShowed = 1;
	}
	else
	{
		document.getElementById(iframeId).style.visibility='hidden';
		document.getElementById(imgId).src='../msn/msnOn.jpg';
		msnShowed = 0;
	}
		
}
function msnCn(imgId,iframeId)
{
	if (msnShowed == 0)
	{
		
		document.getElementById(iframeId).style.visibility='visible';
		document.getElementById(imgId).src='../msn/msnOffCn.jpg';
		msnShowed = 1;
	}
	else
	{
		document.getElementById(iframeId).style.visibility='hidden';
		document.getElementById(imgId).src='../msn/msnOnCn.jpg';
		msnShowed = 0;
	}
		
}
function msnEn(imgId,iframeId)
{
	if (msnShowed == 0)
	{
		
		document.getElementById(iframeId).style.visibility='visible';
		document.getElementById(imgId).src='../msn/msnOffEn.jpg';
		msnShowed = 1;
	}
	else
	{
		document.getElementById(iframeId).style.visibility='hidden';
		document.getElementById(imgId).src='../msn/msnOnEn.jpg';
		msnShowed = 0;
	}
		
}