function getRandomNumber(inMin, inMax)
{
	return inMin + Math.floor(Math.random() * (inMax - inMin + 1));
}

function showLayer(inLayer)
{
	inLayer.style.visibility = 'visible';
}

function hideLayer(inLayer)
{
	inLayer.style.visibility = 'hidden';
}

function placeLayer(inLayer, x, y)
{
	inLayer.style.left = x;
	inLayer.style.top = y;
}