function startbox()
{
	document.getElementById('box1').style.display = "none";
	document.getElementById('box2').style.display = "none";
	document.getElementById('box3').style.display = "none";
	
}

function boxfunc(boxId)
{
	if(document.getElementById(boxId).style.display == "none")
	{
		startbox();
		document.getElementById(boxId).style.display = "block";
	}
	else
	{
		startbox();
	}
}