function showOverlay()    {
	var blnSeenOverlay = readCookie('seen-overlay-2');
	if (!blnSeenOverlay)
	{
		document.getElementById('overlay').style.display = 'block';		
	}
}
function hideOverlay()    {
	document.getElementById('overlay').style.display = 'none';
	preventFurtherOverlayViews()
}
function preventFurtherOverlayViews() {
	setCookie('seen-overlay-2',true);
}