function submenu (action)
{
	if (action=="hide")
	{
		document.getElementById('Nav-Sub').style.visibility = "hidden";
	}
	if (action=="show")
	{
		document.getElementById('Nav-Sub').style.visibility = "visible";
	}
}


var ua = navigator.userAgent.toLowerCase();
var isOpera = (ua.indexOf('opera')  > -1);
var isIE = (!isOpera && ua.indexOf('msie') > -1);

function getyScroll() 
{
	return Math.max(document.compatMode != 'CSS1Compat' ? document.body.scrollHeight : document.documentElement.scrollHeight, getViewportHeight());
}
function getViewportHeight() 
{
	return ((document.compatMode || isIE) && !isOpera) ? (document.compatMode == 'CSS1Compat') ? document.documentElement.clientHeight : document.body.clientHeight : (document.parentWindow || document.defaultView).innerHeight;
}


window.onload=function()
{
    document.getElementById('Ftr').style.position = 'absolute';
    document.getElementById('Ftr').style.top = getyScroll()+50 + 'px';	
}