// global navigation
function gNaviCtl(t)	{
	var target = "sNavi0" + t;
	for(var i=1; i<=8; i++)	{
		var a = "sNavi0" + i;
			if (document.getElementById(a) != null)
			{
				document.getElementById(a).style.display='none';
				document.getElementById('mNaviImg0'+i).src='/images/mNavi0'+i+'.gif';
			}
		}
	document.getElementById(target).style.display='block';
	document.getElementById('mNaviImg0'+t).src='/images/mNavi0'+t+'.gif';
	}