// JavaScript Document

function getyScroll()
 {
	yScroll = 0;
	
	if (window.innerHeight && window.scrollMaxY || window.innerWidth && window.scrollMaxX)
	{
		yScroll = window.innerHeight + window.scrollMaxY;
		xScroll = window.innerWidth + window.scrollMaxX;
		
		var deff = document.documentElement;
		var wff = (deff&&deff.clientWidth) || document.body.clientWidth || window.innerWidth || self.innerWidth;
		var hff = (deff&&deff.clientHeight) || document.body.clientHeight || window.innerHeight || self.innerHeight;
		
		xScroll -= (window.innerWidth - wff);
		yScroll -= (window.innerHeight - hff);
	} 
	else if (document.body.scrollHeight > document.body.offsetHeight || document.body.scrollWidth > document.body.offsetWidth)
	{ // all but Explorer Mac
		yScroll = document.body.scrollHeight;
		xScroll = document.body.scrollWidth;
	} 
	else 
	{ // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		yScroll = document.body.offsetHeight;
		xScroll = document.body.offsetWidth;
	}
	
	return yScroll;
 }

function showLoginForm()
{
	$('LoginForm').style.display = 'block';
	$('screen').style.display = 'block';
	$('screen').style.height = getyScroll() + 'px'; //window.innerHeight + window.scrollMaxY;
}

function hideLoginForm()
{
	$('LoginForm').style.display = 'none';
	$('screen').style.display = 'none';
}