function showQuestionAnswer (id, answer){
	$('.question' + id).hide('fast');
	if(answer == 'y'){
		$('#question' + id + '_answer').prepend('<div style="color:#009900;font-weight:bold;">You are right!</div>').show('medium');
	} else {
		$('#question' + id + '_answer').prepend('<div style="color:#CC0000;font-weight:bold;">Sorry, wrong answer!</div>').show('medium');
	}
}