function changeDisplay(el) {

document.getElementById('popIn').style.display="none";
  	if (el==0) 
	{

    	document.getElementById('popIn').style.display="block";

  	}
	else
	{
		document.getElementById('popIn').style.display="none";
	}
	

}

function changeDisplay2(el) {

document.getElementById('popExtra').style.display="none";
  	if (el==0) 
	{

    	document.getElementById('popExtra').style.display="block";

  	}
	else
	{
		document.getElementById('popExtra').style.display="none";
	}
	

}