// JavaScript Document
function answerQuestion(question)
{
	if(document.getElementById('a'+question).style.display == '')
		document.getElementById('a'+question).style.display = 'none';
	else
		document.getElementById('a'+question).style.display = '';
	
	for(i=1;i<=23;i++)
	{
		if(i!=question)
			document.getElementById('a'+i).style.display = 'none';
	}
}