function showAnswerDiv(i){
    document.getElementById('answer'+i).style.display = "block";
}
function hideAnswerDiv(i){
    document.getElementById('answer'+i).style.display = "none";
}
function toggleAnswerDiv(i){
	if (document.getElementById('answer'+i).style.display == "none"){
		document.getElementById('answer'+i).style.display = "block";
	}else{
		document.getElementById('answer'+i).style.display = "none";
	}
}