function show1stgenSprites()
{
	var sprites = document.getElementById("gen1");
	document.getElementById("gen1").style.display = 'block';
}

function show2ndgenSprites()
{
	var sprites = document.getElementById("gen2");
	document.getElementById("gen2").style.display = 'block';
}

function show3rdgenSprites()
{
	var sprites = document.getElementById("gen3");
	document.getElementById("gen3").style.display = 'block';
}

function show4thgenSprites()
{
	var sprites = document.getElementById("gen4");
	document.getElementById("gen4").style.display = 'block';
}

function hide1stgenSprites()
{
	var sprites = document.getElementById("gen1");
	document.getElementById("gen1").style.display = 'none';
}

function hide2ndgenSprites()
{
	var sprites = document.getElementById("gen2");
	document.getElementById("gen2").style.display = 'none';
}

function hide3rdgenSprites()
{
	var sprites = document.getElementById("gen3");
	document.getElementById("gen3").style.display = 'none';
}

function hide4thgenSprites()
{
	var sprites = document.getElementById("gen4");
	document.getElementById("gen4").style.display = 'none';
}