function answerClick(id) {
	answerBox = document.getElementById('answer' + id);
	if (answerBox.style.display == 'block') {
		answerBox.style.display = 'none';
	} else answerBox.style.display = 'block';
	
	plus_img = new Image();
	plus_img.src = 'images/content/plus.gif';
	minus_img = new Image();
	minus_img.src = 'images/content/minus.gif';
	
	if (document.images) {
		questionExpandImage = document.getElementById('expand' + id);
		if (questionExpandImage.src == plus_img.src) {
			questionExpandImage.src = minus_img.src;
		} else questionExpandImage.src = plus_img.src;	
	}
}