function tdHeight()
{
	for (i=2; i <=15; i++)
	{
		document.getElementById(i).style.position = 'absolute';
		document.getElementById(i).style.top = '450px';
		document.getElementById(i).style.width = '800px';
		document.getElementById(i).style.visibility = (i!=2) ? 'hidden' : 'visible';
		document.getElementById(i).style.display = (i!=2) ? 'none' : 'block';
	}
	document.getElementById('bottom').style.position = 'absolute';
	document.getElementById('bottom').style.top = document.getElementById("tdTop").offsetHeight + document.getElementById("2").offsetHeight;
	document.getElementById('bottom').style.width = '800px';
	document.getElementById('bottom').style.visibility = 'visible';
	document.getElementById('bottom').style.display = 'block';
	document.getElementById("tdHeight").style.height = document.getElementById("2").offsetHeight + document.getElementById("bottom").offsetHeight;
}

function showLayers(idn)
{
	for (i=2; i <=15; i++)
	{
		document.getElementById(i).style.visibility = 'hidden';
		document.getElementById(i).style.display = 'none';
	}
	document.getElementById(idn).style.position = 'absolute';
	document.getElementById(idn).style.display = 'block';
	document.getElementById(idn).style.visibility = 'visible';
	document.getElementById(idn).style.top = '450px';
}