var isNav;
var midHeight = 0;
var curHeight = 0;
var newHeight = 0;

isNav = (document.getElementById) ? true : false;

if (isNav)
{
	curHeight = window.innerHeight;
}

function setmidheight(winH)
{
	var newHeight = 0;
	newHeight = winH - 73;

	if (newHeight < midHeight)
	{
		newHeight = midHeight;
	}

	document.getElementById('midTable').style.height = newHeight;
	document.getElementById('midLeft').style.height = newHeight;
	document.getElementById('midRight').style.height = newHeight;
}

function locatebottom()
{
	var winH = 480;
	var docH = 480;
	var spot;

	if (midHeight == 0)
	{
		midHeight = document.getElementById('midTable').offsetHeight;
	}

	document.getElementById('midTable').style.height = midHeight;
	document.getElementById('midLeft').style.height = midHeight;
	document.getElementById('midRight').style.height = midHeight;

	winH = window.innerHeight;
	docH = midHeight;

	spot = winH - 40;

	if (spot < docH)
	{
		spot = docH;
	}
	setmidheight(spot);
}

function handleresize()
{
	newHeight = window.innerHeight;
	if (newHeight != curHeight)
	{
		location.reload();
	}
}
if (isNav)
{
	onresize = function() { handleresize(); };
	onload = function() { locatebottom(); };
}