function drop()
{
	var dBlock = document.getElementById('q').style.display;
	document.getElementById('q').style.display = (dBlock=='block') ? 'none' : 'block';
	document.getElementById('answerz').style.display = (dBlock=='block') ? 'block': 'none';
	
	document.getElementById('arr').innerHTML =  (dBlock=='block') ? "↓" : "↑";
}