function placeBelow(obj, objBase)
{
	obj = document.getElementById(obj);
	objBase = document.getElementById(objBase);
	var x = objBase.offsetLeft;
	var y = objBase.offsetTop;
	y += 20;
	obj.style.left = x + 'px';
	obj.style.top = y + 'px';
}

function setVisible(obj, vis)
{
	obj = document.getElementById(obj);
	obj.style.display = vis ? 'block' : 'none';

	var cvr = document.getElementById('cover');
	if(vis)
	{
		cvr.style.display = 'block';
		document.body.style.overflow = 'hidden';
	}
	else
	{
		cvr.style.display = 'none';
		document.body.style.overflowY = 'auto';
	}
}

function showInfoMsg(obj, objBase)
{
	placeBelow(obj, objBase);
	setVisible(obj, true);
}

function showImage()
{
	var cvr = document.getElementById('cover');
	cvr.style.opacity = 0.8;
	cvr.style.display = 'block';
	
	var imgH = document.getElementById('imgHolder');
	imgH.style.display = 'block';
	imgH.style.overflowY = 'auto';
}