function randoho() {
	
	var randomnumber=Math.floor(Math.random()*3)
	
	switch (randomnumber)
	
	{
	
	case 0:
		if(document.getElementById('one-left')) document.getElementById('one-left').style.display='block';
		break
	
	case 1:
		if(document.getElementById('two-left')) document.getElementById('two-left').style.display='block';
		break
	
	case 2:
		if(document.getElementById('three-left')) document.getElementById('three-left').style.display='block';
		break
	
	case 3:
		if(document.getElementById('four-left')) document.getElementById('four-left').style.display='block';
		break
}

}

function randoho2() {
	
	var randomnumber=Math.floor(Math.random()*3)
	
	switch (randomnumber)
	
	{
	
	case 0:
		if(document.getElementById('one-right')) document.getElementById('one-right').style.display='block';
		break
	
	case 1:
		if(document.getElementById('two-right')) document.getElementById('two-right').style.display='block';
		break
	
	case 2:
		if(document.getElementById('three-right')) document.getElementById('three-right').style.display='block';
		break
	
	case 3:
		if(document.getElementById('four-right')) document.getElementById('four-right').style.display='block';
		break
}

}