function showLB() {
	document.getElementById('lightbox').style.display = 'inline';
	document.getElementById('bgwhite').style.display = 'inline';
	document.getElementById('white').style.display = 'inline';
	document.getElementById('html').style.overflow = 'hidden';
	
	contentHeight = (document.documentElement.clientHeight) + "px";
	document.getElementById('lightbox').style.height = contentHeight;
}

function hideLB() {
	document.getElementById('lightbox').style.display = 'none';
	document.getElementById('bgwhite').style.display = 'none';
	document.getElementById('white').style.display = 'none';
	document.getElementById('html').style.overflowY = 'auto';
}